OPERATION AND PARTS MANUAL
MODELS
MQD2H
MQD3H
DIAPHRAGM PUMPS
(Honda GX120UT1QX2 Gasoline Engine)
Revision #7 (05/24/13)
To find the latest revision of this
publication, visit our website at:
THIS MANUAL MUST ACCOMPANYTHE EQUIPMENT AT ALLTIMES.
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NOTES
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 3
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TABLE OF CONTENTS
HONDAGX120UT1QX2
MQD2H/D3H Gasoline
Powered Diaphragm
Engine
Air Cleaner Assembly......................................... 46-47
Camshaft Assembly ........................................... 48-49
Carburetor Assembly ......................................... 50-51
Control Assembly ............................................... 52-53
Crankcase Cover Assembly............................... 54-55
Crankshaft Assembly ......................................... 56-57
Cylinder Barrel Assembly................................... 58-59
Cylinder Head Assembly .................................... 60-61
Fan Cover Assembly .......................................... 62-63
Flywheel Assembly ............................................ 64-65
Fuel Tank Assembly ........................................... 66-67
Ignition Coil Assembly ........................................ 68-69
Muffler Assembly ............................................... 70-71
Piston Assembly................................................. 72-73
Recoil Starter Assembly..................................... 74-75
Gasket Kit Assembly .......................................... 76-77
Labels ................................................................ 78-79
Pumps
Proposition 65 Warning ............................................. 2
Table of Contents ...................................................... 4
Parts Ordering Procedures ....................................... 5
Safety Information.................................................. 6-9
Specifications ...........................................................10
Dimensions ..............................................................11
General Information .................................................12
Components.............................................................13
Basic Engine ............................................................14
Inspection.................................................................15
Set-up ................................................................ 16-17
Operation ........................................................... 18-19
Maintenance ...................................................... 20-25
Preparation for Long-Term Storage.........................26
Troubleshooting ................................................. 27-29
Explanation Of Code In Remarks Column ...............30
Suggested Spare Parts ............................................31
Terms and Condition Of Sale
—
Parts .................... 80
NOTICE
ComponentDrawings
Specification and part number are subject to
change without notice.
Nameplate and Decals Assy. ............................. 32-33
Waterbox and Flap Valve Assy. (2-inch)............. 34-35
Pump Assy. (2-inch) ........................................... 36-37
Handle, Engine and Wheel Assy. (2-inch) .......... 38-39
Waterbox and Flat Valve Assy. (3-inch).............. 40-41
Pump Assy. (3-inch) ........................................... 42-43
Handle, Engine and Wheel Assy. (3-inch) .......... 44-45
PAGE 4 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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PARTS ORDERING PROCEDURES
Ordering parts has never been easier!
Choose from three easy options:
Effective:
January 1st, 2006
Best Deal!
Order via Internet (Dealers Only):
Order parts on-line using Multiquip’s SmartEquip website!
If you have an MQ Account, to obtain a Username
and Password, E-mail us at: parts@multiquip.
com.
■ View Parts Diagrams
■ Order Parts
■ Print Specification Information
To obtain an MQ Account, contact your
District Sales Manager for more information.
Use the internet and qualify for a 5% Discount
on Standard orders for all orders which include
complete part numbers.*
to log in and save!
Order Parts
Note: Discounts Are Subject To Change
Fax your order in and qualify for a 2% Discount
on Standard orders for all orders which include
complete part numbers.*
Order via Fax (Dealers Only):
All customers are welcome to order parts via Fax.
Domestic (US) Customers dial:
1-800-6-PARTS-7 (800-672-7877)
Note: Discounts Are Subject To Change
Domestic (US) Dealers Call:
Order via Phone:
1-800-427-1244
Non-Dealer Customers:
International Customers should contact
their local Multiquip Representatives for
Parts Ordering information.
Contact your local Multiquip Dealer for
parts or call 800-427-1244 for help in
locating a dealer near you.
When ordering parts, please supply:
❒
Dealer Account Number
❒
Specify Preferred Method of Shipment:
❒
❒
❒
❒
❒
Dealer Name and Address
✓ UPS/Fed Ex
✓ DHL
✓ Truck
■
■
Priority One
Ground
Shipping Address (if different than billing address)
Return Fax Number
■ Next Day
Second/Third Day
Applicable Model Number
■
Quantity, Part Number and Description of Each Part
NOTICE
All orders are treated as Standard Orders and will
ship the same day if received prior to 3PM PST.
WE ACCEPT ALL MAJOR CREDIT CARDS!
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 5
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SAFETY INFORMATION
Do not operate or service the equipment before reading
the entire manual. Safety precautions should be followed
at all times when operating this equipment.
Failure to read and understand the safety
messages and operating instructions could
result in injury to yourself and others.
Potential hazards associated with the operation of this
equipment will be referenced with hazard symbols which
may appear throughout this manual in conjunction with
safety messages.
SAFETY MESSAGES
The four safety messages shown below will inform you
about potential hazards that could injure you or others.The
safety messages specifically address the level of exposure
to the operator and are preceded by one of four words:
DANGER, WARNING, CAUTION or NOTICE.
SAFETY SYMBOLS
DANGER
Indicates a hazardous situation which, if not avoided,
WILL result in DEATH or SERIOUS INJURY.
WARNING
Indicates a hazardous situation which, if not avoided,
COULD result in DEATH or SERIOUS INJURY.
CAUTION
Indicates a hazardous situation which, if not avoided,
COULD result in MINOR or MODERATE INJURY.
NOTICE
Addresses practices not related to personal injury.
PAGE 6 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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SAFETY INFORMATION
GENERAL SAFETY
CAUTION
NOTICE
„ This equipment should only be operated by trained and
qualified personnel 18 years of age and older.
„ NEVER operate this equipment without proper protective
clothing, shatterproof glasses, respiratory protection,
hearing protection, steel-toed boots and other protective
devices required by the job or city and state regulations.
„ Whenever necessary, replace nameplate, operation and
safety decals when they become difficult read.
„ Manufacturer does not assume responsibility for any
accident due to equipment modifications. Unauthorized
equipment modification will void all warranties.
„ NEVER use accessories or attachments that are not
recommended by Multiquip for this equipment. Damage
to the equipment and/or injury to user may result.
„ Avoid wearing jewelry or loose fitting clothes that may
snag on the controls or moving parts as this can cause
serious injury.
„ ALWAYS know the location of the nearest
fire extinguisher.
„ NEVER operate this equipment when not
feeling well due to fatigue, illness or when
under medication.
„ ALWAYS know the location of the nearest
first aid kit.
„ NEVER operate this equipment under the
influence of drugs or alcohol.
„ ALWAYS know the location of the nearest phone or keep
a phone on the job site. Also, know the phone numbers
of the nearest ambulance, doctor and fire department.
This information will be invaluable in the case of an
emergency.
„ ALWAYS clear the work area of any debris, tools, etc.
that would constitute a hazard while the equipment is
in operation.
„ No one other than the operator is to be in the working
area when the equipment is in operation.
„ DO NOT use the equipment for any purpose other than
its intended purposes or applications.
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 7
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SAFETY INFORMATION
PUMP SAFETY
DANGER
„ ALWAYS flush pump (clean) after use when pumping
water concentrated with heavy debris.It is very important
to always flush the pump before turning it off to prevent
clogging.
„ NEVER operate the equipment in an explosive
atmosphere or near combustible materials.An
explosion or fire could result causing severe
bodily harm or even death.
„ Fix damage to machine and replace any broken parts
immediately.
„ ALWAYS store equipment properly when it is not being
used.Equipment should be stored in a clean, dry location
out of the reach of children and unauthorized personnel.
WARNING
„ Accidental starting can cause severe injury
or death. ALWAYS place the ON/OFF
switch in the OFF position.
„ NEVER lubricate components or attempt service on a
running machine.
„ DO NOT place hands or fingers inside
pump when pump is running.
„ ALWAYS allow the machine a proper amount of time to
cool before servicing.
„ NEVER disconnect any emergency or
„ Keep machine in proper running condition.
LIFTING SAFETY
safety devices. These devices are intended for operator
safety.Disconnection of these devices can cause severe
injury, bodily harm or even death. Disconnection of any
of these devices will void all warranties.
CAUTION
„ When raising or lowering of the pump is required, always
attach an adequate rope or lifting device to the correct
lifting point (handle) on the pump.
CAUTION
„ DO NOT restrict the flow of the discharge hose as it may
cause overheating.
NOTICE
„ Be careful of discharge whipping under pressure.
NOTICE
„ DO NOT lift machine to unnecessary heights.
„ NEVER lift the equipment while the engine is running.
TRANSPORTING SAFETY
„ NEVER operate pump on its side.
„ DO NOT allow up to freeze in water.
„ NEVER leave an open pump chamber unattended.
„ ALWAYS keep the machine in proper running condition.
NOTICE
„ ALWAYS shutdown pump before transporting.
„ ALWAYS tie down equipment during transport by
securing the equipment with rope.
„ DO NOT attempt to thaw-out a frozen pump by using
a torch or other source of flame. Application of heat in
this manner may heat the oil in the seal cavity above the
critical point, causing pump damage.
ENVIRONMENTAL SAFETY
NOTICE
„ DO NOT pump water greater than 104º F.
„ Dispose of hazardous waste properly.
Examples of potentially hazardous waste
are used motor oil, fuel and fuel filters.
„ DO NOT pump liquids containing acid or alkali.
„ ALWAYS check strainer before pumping. Make sure
strainer is not clogged. Remove any large objects, dirt
or debris from the strainer to prevent clogging.
„ DO NOT use food or plastic containers to dispose of
hazardous waste.
„ ALWAYS use a large basket strainer when pumping
water that contains large debris.
„ DO NOT pour waste, oil or fuel directly onto the ground,
down a drain or into any water source.
PAGE 8 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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NOTES
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 9
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SPECIFICATIONS
Table 1. Specifications (Pump)
MQD2H Diaphragm Pump
Type
M
Q
D
3
H
D
i
a
p
h
r
ag
m
P
u
m
p
Suction & Discharge
Size
2.00 in. (50.8 mm.)
3.00 in. (76.2 mm.)
Maximum Pumping
Capacity
3,000 gallons/hour
(11,340 liters/hour)
5,400 gallons/hour
(20,456 liters/hour)
Pump
Max. Solids Diameter
Max Lift
1-1/2 in. (38.1 mm)
26 ft. (7.92 meters)
25 ft. (7.62 meters)
140 lbs. (63 Kg.)
1-5/8 in (41.275 mm)
26 ft. (7.92 meters)
25 ft. (7.62 meters)
160 lbs. (72 Kg.)
Max. Head
Dry Net Weight
Table 2. Specifications (Engine)
Model
Type
HONDA GX120UT1QX2
Air-cooled 4 stroke, Single Cylinder, OHV,
Horizontal Shaft Gasoline Engine
Bore X Stroke
2.4 in. x 1.7 in. (60 mm x 42 mm)
119 cc (7.2 cu-in)
Displacement
Max Output
4.0 H.P./2,750 R.P.M.
Fuel Tank Capacity
Fuel
0.66 US gal. (2.5 liters)
Unleaded Automobile Gasoline
.60 liters (0.63 qts)
Lube Oil Capacity
Speed Control Method
Starting Method
Dimension (L x W x H)
Dry Net Weight
Centrifugal Fly-weight Type
Recoil Start
11.7 x 13.4 x 12.5 in. (297 x 341 x 318 mm)
28.7 lbs (13 Kg.)
PAGE 10 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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DIMENSIONS
MQ-D2H/D3H — DIMENSIONS (PUMP)
Figure 1. MQD2H/D3H Pump Dimensions
Table 3. Dimensions
A
B
C
D
E
MODEL
LENGTH
HEIGHT
WIDTH
DISCHARGE
SUCTION
39 in.
(99.06 cm.)
27.53 in.
(69.93 cm.)
25.68 in.
(65.23 cm.)
7.34 in.
(18.64 cm.)
5.62 in.
(14.27 cm.)
MQD2H
41.5 in.
(105.41 cm.)
22 in.
(55.88 cm.)
30 in.
(76.2 cm.)
6.2 in.
(15.75 cm.)
6.3 in.
(16 cm.)
MQD3H
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 11
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MQ-D2H/D3H
G
—
EN
G
E
EN
R
E
A
R
L
A
I
L
NFORMATION
INFORMATION
Elevation
APPLICATION
Higher elevations will effect the performance of the pump. Due to
less atmospheric pressure at higher altitudes, pumps DO NOT
have the priming ability that they have at sea level. This is due to
the “thinner air” or lack of oxygen at higher altitudes.
The MQD2H and MQD3H diaphragm pumps are designed to
be used for de-watering applications.The suction and discharge
ports on the MQD2H use a 2-inch diameter opening, which allows
the pump to pump at rate of approximately 3,000 gallons/hour
(gph) or 11,340 liters/hour (lph).The suction and discharge ports
on the MQD3H use a 3-inch diameter opening, which allows the
pump to pump at rate of approximately 5,400 gallons/hour (gph)
or 20,456 liters/hour (lph).
A general rule of thumb is that for every 1,000 feet of elevation
above sea level a pump will lose one foot of priming ability.
For example, in Flagstaff, Arizona where the elevation is
approximately 7,000 feet, the pump would have a suction lift of
only 18 feet rather than the 25 feet at sea level. Table 3 shows
suction lift at various elevations.
Diaphragm pumps use a positive displacement design rather
than centrifugal force to move water through the casing. This
means the pump will deliver a specific amount of flow per stroke,
revolution or cycle.These pumps are commonly referred to as
mud hogs, mud hens and mud suckers.Their names reflect their
popularity for use in applications where shallow depths and slurry
water render centrifugal pumps ineffective.
Table 4. Suction Lift at Various Elevations
Altitude
Suction Lift in Feet (Meters)
Feet (Meters)
Sea Level
10.0 (3.048) 15.0 (4.572) 20.0 (6.096) 25.0 (7.620)
8.80 (2.680) 13.2 (4.023) 17.6 (5.364) 22.0 (6.705)
7.80 (2.377) 11.7 (3.566) 15.6 (4.754) 19.5 (5.943)
6.90 (2.103) 10.4 (3.169) 13.8 (4.206) 17.3 (5.273)
6.20 (1.889) 9.30 (2.834) 12.4 (3.779) 15.5 (4.724)
Power Plant
2,000 (610)
4,000 (1,219)
6,000 (1,829)
8,000 (2,438)
These diaphragm pumps are powered by a 4.0 horsepower air
cooled, 4-stroke, single cylinder HONDA GX120 gasoline engine
that incorporates a low“Oil Alert Feature”.The drive shaft of the
engine is coupled to an offset connecting rod that is coupled to a
flexible diaphragm. The connecting rod alternately raises
(expands) and lowers (contracts) the diaphragm at a rate of 60
cycles per minute at maximum engine RPM (2,750).
10,000 (3,048) 5.70 (1.737) 8.60 (2.621) 11.4 (3.474) 14.3 (4.358)
Table 4 shows percentage drops in performance as elevation
increases.
Oil Alert Feature
In the event of low oil or no oil, the HONDA GX120 engine has
a built-in oil alarm engine shut-down feature. In the event the oil
level is low the engine will automatically shut-down.
Table 5. Performance Loss at Various
Elevations
Suction Lift
This pump is intended to be used for dewatering applications
and is capable of suction lifts up to 25 feet at sea level. For
optimal suction lift performance keep the suction hose or line as
short as possible. In general always place the pump as close to
the water as possible.
Altitude
Feet (Meters
Discharge Flow
Discharge Head
Sea Level
100%
97%
95%
93%
91%
88%
100%
95%
91%
87%
83%
78%
2,000 (610)
Pump Support
4,000 (1,219)
6,000 (1,829)
8,000 (2,438)
10,000 (3,048)
The pump should always be placed on solid stationary ground
in a level position.
NEVER place the pump on soft soil. The suction hose or pipe
connection should always be checked for tightness and leaks. A
small suction leak in the hose or fittings could prevent the pump
from priming.
PAGE 12 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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COMPONENTS
MQ-D2H/D3H — PUMP COMPONENTS
Figure 2 shows a typical application using the MQD2H or MQD3H diaphragm pump. Please note that this pump is intended for the
removal of clean water and water containing some debris and solids. Maximum size of solids for the MQD2H should not exceed 1-
1/2 inches (38.1 mm) in diameter, and maximum size of solids for the MQD3H should not exceed 1-5/8 inches (41.275) in diameter.
DO NOT set strainer on bottom of water bed. Placing the strainer above the water bed will prevent the pump from drawing in
excessive amounts of sand and foreign debris.
Contact your nearest Multiquip
dealer for quick disconnect hoses
and fittings.
Figure 2. MQ-D2H/D3H Pump Application
1. Pump –The Multiquip Models MQD2H and MQD3H are 6. Suction Port – Connect either a 2-inch or 3-inch inlet
2-inch and 3-inch diaphragm pumps respectively and are
used in general de-watering applications. Typical
dewatering applications consist of cleaning out cesspools
and septic tanks, draining slow seepage from small
excavations, trenches and construction sites, or pumping
out industrial waste.
hose to this port depending on pump model.
7. Suction Hose – Connect a flexible rubber hose to the
suction port on the pump. Make sure that the hose lays flat
and is not kinked. Use only recommended type suction hose.
Contact Multiquip parts department for ordering information.
8. Strainer – Always attach a strainer to bottom side of the
suction hose to prevent large objects and debris from
entering the pump. Strainer should be positioned so that it
will remain completely under water.
2. Priming Plug/Suction Priming Chamber – To help
facilitate faster priming operations, fill chamber with clean
water and secure priming plug.
3. Discharge Port – Connect either a 2-inch or 3-inch
9. Transmission Oil Fill Plug – Remove this plug to add
SAE 80/90 EP (API GL-5) gear oil to the transmission.
Transmission oil capacity is 22 ounces (651 ml.).
discharge hose to this port depending on pump model.
4. NPT Connection – Used to secure the hose to the inlet
and outlet ports on the pump.
10. Connecting Rod Grease Access Hole – Grease
connecting rod bearing through this access hole. Grease
connecting rod bearing every 25 hours of operation.
5. Discharge Hose – Connect a flexible rubber hose to the
discharge port on the pump. Make sure that the hose lays
flat and is not kinked. Use only recommended type discharge
hose. Contact Multiquip parts department for ordering
information.
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 13
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BASIC ENGINE
Figure 3. Engine Controls and
Components
INITIAL SERVICING
6. Choke Lever – Used in the starting of a cold engine, or in
cold weather conditions. The choke enriches the fuel
mixture.
The engine (Figure 3) must be checked for proper lubrication and
filled with fuel prior to operation. Refer to the Honda manufacturers
engine manual for instructions and details for operation and
servicing.
7. Air Cleaner – Prevents dirt and other debris from entering
the fuel system. Remove wing-nut on top of air filter
cannister to gain access to filter element.
1. Fuel Filler Cap – Remove this cap to add unleaded
gasoline to the fuel tank. Make sure cap is tightened
securely. DO NOT over fill.
Operating the engine without an air
filter, with a damaged air filter, or a
filter in need of replacement will
Explosive Fuel
DANGER - Explosive Fuel
allow dirt to enter the engine,
causing rapid engine wear.
Adding fuel to the tank should be done only
when the engine is stopped and has had an
opportunity to cool down. In the event of a fuel
spill, DO NOT attempt to start the engine until
the fuel residue has been completely wiped up,
and the area surrounding the engine is dry.
8. Spark Plug – Provides spark to the ignition system. Set
spark plug gap to 0.6 - 0.7 mm (0.028 - 0.031 inch) Clean
spark plug once a week.
2. Throttle Lever – Used to adjust engine RPM speed (lever
advanced forward SLOW, lever back toward operator
FAST).
9. Muffler – Used to reduce noise and emissions.
CAUTION - Burn Hazard
3. Engine ON/OFF Switch – ON position permits engine
Engine components can generate extreme
heat.To prevent burns, DO NOT touch these
areas while the engine is running or
immediately after operating. NEVER operate
the engine with the muffler removed.
starting, OFF position stops engine operations.
4. Recoil Starter (pull rope) – Manual-starting method. Pull
the starter grip until resistance is felt, then pull briskly and
smoothly.
5. FuelValve Lever – OPEN to let fuel flow, CLOSE to stop
the flow of fuel.
10. Fuel Tank – Holds unleaded gasoline. For additional
information refer to engine owner's manual.
PAGE 14 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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INSPECTION
UPPER LIMIT
CAUTION - Read Manual
Please read the entire maintenance section
in this manual before servicing the pump. In
addition for operator safety, please read all
safey messages at the begining of the
manual
LOWER LIMIT
Inspection
Figure 5. Engine Oil Dipstick (Oil Level)
1. Clean the pump, removing dirt and dust, particularly the
engine cooling air inlet, carburetor and air cleaner.
Table 6. Oil Type
2. Check the air filter for dirt and dust. If air filter is dirty, replace
air filter with a new one as required.
Season
Temperature
25°C or Higher
25°C~10°C
Oil Type
Summer
Spring/Fall
Winter
SAE 10W-30
SAE 10W-30/20
SAE 10W-10
3. Check carburetor for external dirt and dust. Clean with dry
compressed air.
4. Check fastening nuts and bolts for tightness.
0°C or Lower
Engine Oil Check
1. To check the engine oil level, place the pump on secure
level ground with the engine stopped.
DANGER - Explosive Fuel
Motor fuels are highly flammable and can be
dangerous if mishandled. DO NOT smoke
while refueling. Adding fuel to the tank
2. Remove the filler dipstick from the engine oil filler hole
(Figure 4) and wipe clean.
should be done only when the engine is
stopped and has had an opportunity to cool
DIPSTICK
down. DO NOT attempt to refuel the pump if the engine is
hot! or running In the event of any spilled fuel, wipe up
immediately. DO NOT attempt to start the engine until the
fuel residue has been completely wiped up, and the area
surrounding the engine is dry.
Fuel Check
Figure 4. Engine Oil Dipstick (Removal)
1. Remove the gasoline cap located on top of fuel tank.
2. Visually inspect to see if the fuel level is low. If fuel is low,
replenish with unleaded fuel.
3. Insertandremovethedipstickwithoutscrewingitintothefiller
neck. Check the oil level shown on the dipstick.
3. When refueling, be sure to use a strainer for filtration. DO
4. If the oil level is low (Figure 5), fill to the edge of the oil filler
hole with the recommended oil type (Table 5).Maximum oil
capacity is .63 quarts (.60 liters).
NOT top-off fuel. Wipe up any spilled fuel immediately!
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 15
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SETUP
Handle Installation
CAUTION - Handle Mounting
Before Starting
1. Read safety instructions at the
beginning of manual.
Failure to follow instructions and properly install handle,
mounting screws with washers, and torque mounting
screws, will result in damage or premature failure to
gearbox, base or other pump components.
2. Place pump as near to water as
possible,onafirmflat,levelsurface.
WARNING - Fill Cap
The MQD2H/D3H diaphragm pumps are completely
assembled except for the steering handle. Attach the steering
handle to the pump base as referenced below:
DO NOT open fill cap if pump is hot! Water inside may
be under pressure.
1. Removethetwofront1/2-13hexscrewsfasteninggearbox
mounting feet to base as shown in Figure 6.
Hoses and Clamps
1. Check that all hoses are securely attached to the pump.
Make certain suction hose (Figure 2) does not have any air
leakage. Use teflon tape or pipe dope on NPT threads.
2. Place handle onto gearbox mounting feet. Align handle
mounting holes with front holes on gearbox feet.
3. Install 1/2" flat washers onto 1/2-13 X 2-1/4 hex screws.
2. Remember suction hoses must be rigid enough not to
4. Insert hex screws through handle and gearbox foot, into
tapped holes of base.
collapse when the pump is in operation.
3. Check that the discharge hose (Figure 2) is not restricted.
Place hose so that it lays as straight as it is possible on the
ground. Remove any twists or sharp bends from hose which
may block the flow of water.
5. Hand tighten both hex screws.
6. Torque both hex screws to 35 ft-lb.
GEAR
BOX
Suction and discharge hoses are
available from Multiquip. Contact
HANDLE
NOTE
BOLT
WASHER
your nearest dealer for more
information.
PUMP BASE
4. The discharge hose is usually a collapsible (thin-walled)
hose, however if a thin-walled discharge hose is not avail-
able, a rigid suction hose can be substituted in its place.
5. Make sure the suction strainer (Figure 2) is clean and
securely attached to the water end of the suction hose. The
strainer is designed to protect the pump by preventing large
objects from being pulled into the pump.
Figure 6. Handle Installation
CAUTION - Transmission Fluid
Transmission fluid needs to be added prior to operation.
PAGE 16 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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SETUP
Diaphragm pumps will handle fluids
containing considerable solids (see
Table 1 for maximum solids diameter),
however, if the mixture is too heavy to
be pumped, water must be added until
the mixture becomes sufficently fluid for
pumping.
CAUTION - Strainer
The strainer should be positioned so it will remain completely
under water. Running the pump with the strainer above
water for long periods can damage the pump.
NOTE
CAUTION - Flammable Fluids
Connecting Rod Bearing Lubrication
DO NOT pump flammable fluids, corrosive chemicals or fluids
containing toxic substances. These fluids can create potentially
dangerous health and environmental hazards. Contact local
authorities for assistance.
1. Grease connecting rod bearing thru the access
hole (Figure 8) every 25 hours of operation.
2. Use only premium lithium based grease, conforming to
NLG1 Grade #2 consistency.
Gear Reduction Oil (Transmission)
1. Remove the transmission oil level plug (Figure 7). If oil
begins to seep out as the plug is being removed, then it
can be assumed that the transmission oil is at the proper
operating level.
2. If oil does not seep out as the oil level plug is being removed,
then remove the transmission oil fill plug and fill with SAE
80/90 EP (API GL-5) gear oil to the proper operating level.
Transmission oil capacity is capacity is 22 ounces (651 ml).
Figure 8. Connecting Rod Bearing Lubrication
Helpful Hints
The capacity of this diaphragm pump will vary greatly depending on
the height of the suction lift and length of the discharge hose. A
discharge hose which is too small, long or high will cause the
following:
■
■
■
■
■
Excessive bulging of diaphragm on the down stroke.
Valves closing with a loud snap.
Rough operation.
Figure 7.Transmission Oil Level
Engine overloads and slow downs.
Reduced efficiency.
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 17
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OPERATION
MQ-D2H/D3H — OPERATION
CAUTION - Read Manual
DO NOT attempt to operate the pump until the
Safety, General Information and Inspection
sections of this manual have been read and
thoroughly understood.
CAUTION - General Safety Precautions
NEVER operate the pump in a confined
area or enclosed area structure that does
not provide ample free flow of air.
Figure 11. Engine Choke Lever (CLOSED)
4. Place the choke lever (Figure 12) in the "OPEN " position
if starting a warm engine or the temperature is warm.
ALWAYS wear approved eye and hearing
protection before operating the pump.
This section is intended to assist the operator with the initial
start-up of the trash pump. It is extremely important that this
section be read carefully before attempting to use the pump in
the field.
Starting the Engine (HONDA engine)
Figure 12. Engine Choke Lever (Open)
1. Place the engine fuel valve lever (Figure 9) to the "ON"
position.
5. Place the engine ON/OFF switch (Figure 13) in the "ON "
position.
Figure 9. Engine Fuel Valve Lever (ON Position)
2. Move the throttle lever (Figure 10) away from the slow
Figure 13. Engine ON/OFF Switch (ON Position)
position, about 1/3 of the way toward the fast position.
6. Grasp the starter grip (Figure 14) and slowly pull it out.The
resistancebecomesthehardestatacertainposition,corre-
spondingtothecompressionpoint.Pullthestartergripbriskly
andsmoothlyforstarting.
Figure 10. Throttle Lever (1/3 Start Position)
3. Placethechokelever(Figure11)inthe"CLOSED"position
if starting a cold engine.
Figure 14. Starter Grip
PAGE 18 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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MQ-D2H/D3H —
O
O
P
P
ERATION
ERATION
7. If the engine has started, slowly return the choke lever Stopping The Engine
(Figure 15 ) to the “OPEN” position. If the engine has not
started repeat steps 1 through 6.
Normal Shutdown
1. Movethethrottlelever tothe IDLEposition (Figure17)and
run the engine for three minutes at low speed.
Figure 17.Throttle Lever (Idle)
2. Aftertheenginecools,turntheengineON/OFFswitchtothe
“OFF” position (Figure 18).
Figure 15. Choke Lever (Open)
8. Beforethepumpisplacedintooperation,runtheenginefor
severalminutes. Checkfor fuelleaks,andnoisesthatwould
associate with a lose component.
9. To begin pumping, place the throttle lever (Figure 16) in the
"RUN" position.
Figure 18. Engine ON/OFF Switch (OFF)
3. Place the fuel shut-off lever (Figure 19) in the ”OFF”
position.
Figure 16.Throttle Lever (Run)
Figure 19. Fuel Valve Lever (OFF)
Emergency Showdown
1. Move the throttle lever quickly to the “IDLE” position, and
Pump speed can be regulated with
the engine throttle control from full
place the engine ON/OFF switch in the “OFF” position.
volume, 65 strokes per pinute, to
about 40 strokes per minute for
lesser volume seepage.Smoothest
operation can be determined by trying to pump at several speeds.
Limit maximum speed to 65 strokes per minute of the diaphragm
(2,800 RPM engine speed).
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 19
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MAINTENANCE
Pump Vacuum Test
FlapperValve Replacement
1. Remove the two bolts that secure the suction port
chamber (Figure 20) to the pump well. Remove suction
port chamber. Replace valves as required and
reassemble.
To perform the pump vacuum test do the following:
1. Start the engine as outlined in the initial start-up section,
and wait for the pump to begin pumping.
2
Check and make sure that there are no air leaks between
the vacuum tester (Figure 21) and the inlet port on the
pump. If air leaks are present reseat vacuum tester.
3. Run the pump for a few minutes while monitoring the
vacuum gauge. If the gauge indicates a reading between
-25 and -20 in. Hg. (inches of mercury) then it can be
assumed that the pump is working correctly.
22 in. Hg (inches of mercury)
translates into 25 feet of lift at sea
level.
4. If the vacuum tester gauge indicates a reading
below -20 in. Hg, it can then be assumed that the pump
is not functioning correctly, and corrective action needs
to be taken.
Figure 20. FlapperValve Replacement
2. Remove the two bolts that secure the discharge port
(Figure 20) to the pump well. Remove discharge port
plate.Replace valves as required and reassemble.
5. To test the flapper valve, shut down the engine. The
vacuum tester should remain attached to the pump
suction inlet port by vacuum. This indicates the pump's
flapper valve is seating properly to hold water in the
suction hose when the engine is stopped.This prevents
backflow and allows for faster priming when the engine
is restarted.
Gear Reduction Oil (Transmission)
1. Check gearbox oil level every 20 hours of operation or
at least once a week; more often if any leakage is
detected around the gearbox.
2. Change transmission oil after the first 40 hours of
operation. Use SAE 80/90 EP (API GL-5) gear oil.
Transmission oil capacity is 22 ounces (651 ml.).Check
oil level periodically and change oil after every 350 hours
of operation.
Connecting Rod Bearing Lubrication
1. Grease connecting rod bearing (Figure 8) every
8 hours of operation.This is done by rotating the
rod bearing to the 12 o'clock position. At this point
the grease fitting will be visible through the guard
hole.
2. Use only premium lithium based grease, conforming
to NLG1 Grade #2 consistency.
3. Remove connecting rod guard occasionally and
wipe up excess grease from connecting rod
bearing.
PAGE 20 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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MAINTENANCE
Pressure reading may vary depending on
altitude. See Tables 4 and 5.
Figure 21. Pump VacuumTester
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 21
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MAINTENANCE
Rotation of Suction and Discharge Ports
CAUTION - Stalled or Stopped Pump
In some applications, it may be preferable to have suction/
discharge ports rotated 90° (Figure 22) to be in-line with the
pump wheels. Perform the following procedure to rotate ports:
During the course of pumping operations that include
heavy debris laden fluids, the pump well MUST be
checked for build-up of rocks, silt, sand and general de-
bris. Failure to clean out the pump cavity (well) could
result in damage to the plunger arm, and pump casing.
1. Remove the four hex head cap screws, hex nuts, flat
washers and lock washers from the pump base.
2. Push pump well downwards to separate from pump
base.
Stalled/Stopped/Damaging Debris
3. Rotate pump well 90° clockwise so that driver is
positioned over top of discharge plate.
If Pump has stalled, stopped, or has been engaged in moving
heavy debris laden fluids, perform the following procedures:
4. Align pump well, pump base, and diaphragm with each
other.Once all components have been properly aligned,
reinstall the four hex head cap screws, hex nuts, flat
and lock washers and tighten securely.
1. Remove handle from pump. See Figure 6.
2. Remove the four hex head cap screws, hex nuts, flat
washers and lock washers from the pump base.
3. Push pump well downwards (Figure 23) to separate from
pump base.
4. Clean and remove all dirt and debris from pump well.
5. Align pump well, pump base, and diaphragm with each
other.Once all components have been properly aligned,
reinstall the four hex head cap screws, hex nuts, flat
and lock washers and tighten securely.
Figure 22. Suction/Discharge Port Rotation
Clearing a Jam-Up
If large solids or an accumulation of sand, silt or other
sediment gather and become lodged in the pump well, the
plunger arm may be prevented from making a normal full
stroke. This action may cause the pump to stall, the crank
to slip on the output shaft, and ultimately cause damage to
the plunger arm.
Figure 23. PumpWell (Clean-out)
WARNING - Lock ScrewTorqueing
Similarly, large damaging solids and debris may build in the
pump well and if not removed, may cause extreme damage
to the plunger arm and pump casing. If a jam or suspected
debris build-up occurs, the pump must be thoroughly cleaned
as described in the “Stalled/Stopped/Damaging Debris”
Section.
Pump jamming with an over-torqued lock screw (plunger
arm) may cause internal damage. Under torqueing may
allow the output shaft to spin and wear parts prematurely
causing replacement.
PAGE 22 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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MAINTENANCE
Seized Plunger
Diaphragm Replacement
1. Remove plunger cover as shown in step 1 of the "Seized
Plunger" section.
If the plunger arm has seized, perform the following:
1. Remove plunger guard (Figure 24) by removing slotted
screw (2).
2. Remove handle as shown in Figure 6 of the "Handle
Installation" section.
2. Disassemble pump and clean as described in steps 1
thru 4 in the "Stalled Pump" section.
3. Rotate pump output shaft until plunger arm is in the
down position.
3. Using a torque wrench, torque lock screw (Figure 24) to
70 ft.-lbs. (9.6 kg-m).
4. Remove the four hex head cap screws, hex nuts, flat
washers and lock washers from the pump base.
5. Push pump well downwards to separate from pump
base.
PLUNGER
GUARD
6. Remove the three carriage bolts (Figure 25) that secure
the diaphragm to the plunger arm base. Remove
diaphragm.
SLOTTED
SCREW
7. Replace diaphragm, reassemble in reverse order.
LOCK
SCREW
PLUNGER
ARM
70 FT-LBS
(9.6 KG-M)
Figure 24. Lock Screw Torqueing
Figure 25. Diaphragm Replacement
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 23
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MAINTENANCE
Engine Maintenance
Perform engine maintenance procedures as referenced by
Table 7 below:
Table 7. Engine Maintenance Schedule
FIRST
EVERY
EVERY
EVERY
YEAR
OR
EVERY
2 YEARS
OR
MONTH 3 MONTHS 6 MONTHS
OR
DESCRIPTION (3)
OPERATION
BEFORE
OR
OR
10 HRS.
25 HRS.
50 HRS.
100 HRS.
200 HRS.
CHECK
CHANGE
CHECK
X
Engine Oil
X
X
X
Air Cleaner
All Nuts & Bolts
Spark Plug
CHANGE
X (1)
Re-tighten If
Necessary
CHECK-CLEAN
REPLACE
CHECK
X
X
X
Cooling Fins
Spark Arrester
Fuel Tank
CLEAN
X
X
CLEAN
Fuel Filter
CHECK
X
Idle Speed
CHECK-ADJUST
CHECK-ADJUST
CHECK
X (2)
Valve Clearance
Fuel lines
X (2)
Every 2 years (replace if necessary) (2)
(1) Service more frequently when used in DUSTY areas.
(2) These items should be serviced by your servic dealer, unless you have the proper tools and are mechanically
proficient. Refer to the HONDA shop Manual for service procedures
(3) For commercial use, log hours of operation to determine proper maintenance intervals.
Reference manufacturer engine
manual for specific servicing
instructions.
PAGE 24 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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MAINTENANCE
Maintenance
DANGER - Combustion (Fire , Explosion)
Performtheenginemaintenanceproceduresasindicatedbelow:
DO NOT use gasoline as a cleaning solvent.The possibility
DAILY
exists of fire or explosion.
■
Thoroughly remove dirt and oil from the engine and control
area.Clean or replace the air cleaner elements as necessary.
Check and retighten all fasteners as necessary. Check the
spring box and bellows for oil leaks. Repair or replace as
needed.
ENGINEAIRCLEANER
1. Remove the air cleaner cover and foam filter element as
shown in Figure 28.
WEEKLY
■
Remove the fuel filter cap and clean the inside of the fuel
tank.
2. Tap the paper filter element (Figure 28) several times on a
hard surface to remove dirt, or blow compressed air [not
exceeding 30 psi (207 kPa, 2.1 kgf/cm2)] through the filter
elementfromtheaircleanercaseside.NEVER brushoffdirt.
Brushingwillforcedirtintothefibers.Replacethepaperfilter
element if it is excessively dirty.
■
■
Remove or clean the filter at the bottom of the tank.
Remove and clean the spark plug (Figure 26), then adjust
the spark gap to 0.028 ~0.031 inch (0.6~0.7 mm).This unit
has electronic ignition, which requires no adjustments.
3. Cleanfoamelementinwarm,soapywaterornonflammable
solvent. Rinseanddrythoroughly. Diptheelementinclean
engineoilandcompletelysqueezeouttheexcessoilfromthe
element before installing.
Figure 26. Spark Plug Gap
ENGINEOIL
1. Drain the engine oil when the oil is warm as shown in
Figure 27.
2. Remove the oil drain bolt and sealing washer and allow
the oil to drain into a suitable container.
3. Replace engine oil with recommended type oil as listed
inTable 5.Engine oil capacity is .63 quarts (.60 liters).DO
NOT overfill.
4. Install drain bolt with sealing washer and tighten se-
curely.
Figure 28. Engine Air Cleaner
Figure 27. Engine Oil (Draining)
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 25
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PREPARATION FOR LONG-TERM STORAGE
Pump Storage
For storage of the pump for over 30 days, the following is
required:
Drain the fuel tank completely.
Run the engine until the fuel is completely consumed.
Completely drain used oil from the engine crankcase
and fill with fresh clean oil, then follow the procedures
described in the engine manual for engine storage.
Remove the pump cover and clean inside of pump
housing. Coat inside of pump housing with a light film of
oil to reduce corrosion. A spray can of oil works well for
this application.
Cover suction and discharge ports with duct tape to
prevent any foreign matter from falling into pump.
Cover pump and engine with plastic covering or
equivalent and store in a clean, dry place.
PAGE 26 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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TROUBLESHOOTING
TABLE 8. ENGINE TROUBLESHOOTING
SYMPTOM
Difficult to start
POSSIBLE PROBLEM
SOLUTION
Ignition plug being bridge?
Carbon deposit at ignition?
Check ignition system.
Clean or replace ignition.
Replace insulators.
Fuel is available but spark plug
will not ignite. (Power available
at high tension cable).
Short circuit due to defective
insulators?
Improper spark gap?
Set spark plug gap to the correct gap.
Check stop switch circuit. Replace stop switch if defective.
Replace ignition coil.
Short circuit at stop switch?
Ignition coil defective?
Fuel is available but spark plug
will not ignite. (Power NOT
available at high tension cable).
Muffler clogged with carbon
deposits?
Clean or replace muffler.
Mixed fuel quality is
inadequate?
Check fuel to oil mixture.
Fuel is available and spark plug
ignites (compression normal).
Fuel in use inadequate (water,
dust)?
Flush fuel sytem and replace with fresh fuel.
Air Cleaner clogged?
Defective cylinder head gasket?
Cylinder worn?
Clean or replace air cleaner.
Tighten cylinder head bolts or replace head gasket.
Replace cylinder.
Fuel is available and spark plug
ignites (compression low ).
Spark plug loose?
Tighen spark plug.
Operation not satisfactory
Air cleaner clogged?
Air in fuel line?
Clean or replace air cleaner.
Bleed (remove air) from fuel line.
Not enough power available
(compression normal, no miss-
firing).
Fuel level in carbureator float
chamber improper?
Adjust carbureator float
Carbon deposits in cylinder?
Ignition coil defective?
Clean or replace cylinder
Flush fuel sytem and replace with fresh fuel.
Replace ignition wires, clean ignition.
Flush fuel sytem and replace with fresh fuel.
Not enough power available
(compression normal, miss-
firing).
Ignition plug often shorts?
Fuel in use inadequate (water,
dust)?
Excessive carbon depostion in
combustion chamber?
Clean or replace crankcase.
Clean or replace muffler.
Engine overheats.
Exhaust or muffler clogged with
carbon.
Spark plug heat value incorrect? Replace spark plug with correct type spark plug.
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 27
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TROUBLESHOOTING
TABLE 8. ENGINE TROUBLESHOOTING (Continued)
SYMPTOM
POSSIBLE PROBLEM
SOLUTION
Operation not satisfactory
Governor adjustment improper?
Governor spring defective?
Fuel flow erratic?
Adjust governor to correct lever.
Clean or replace ignition.
Check fuel line.
Rotational speed fluctuates.
Air taken in through suction
line?
Check suction line.
Dust in rotating part?
Spring spring failure?
Clean recoil starter assembly.
Replace sprial spring.
Recoil starter not working
properly.
Table 9. Pump Troubleshooting
POSSIBLE PROBLEM
SYMPTOM
SOLUTION
Not enough priming water in the housing?
Engine speed too low?
Add water to suction chamber.
Increase throttle.
Strainner plugged?
Clean strainer.
Suction hose damaged?
Replace or repair hose, and clamps
Air leak at suction port?
Check that fittings are tight and properly sealed.
Pump does not take on water.
Pump is located too high above water line?
Debris collecting in pump housing?
Move pump closer to water.
Clean pump housing.
Check that valves are seated correctly. Pour water in
in suction chamber to help seal valves.
Valves not seated correctly?
Pump does not prime correctly?
Engine speed too low?
Check diaphragm for breaks or leaks.
Increase throttle speed.
Pump takes in water, little or no
discharge.
Suction hose leaks at inlet.
Teflon Tape/Pipe Dope not used?
Clean strainer.
Apply teflon tape or pipe dope to NPT fittings.
Suction hose leaks at inlet.
Hose diameter is too large?
Pressure too high?
Use same diameter on suction/discharge ports.
Check pressure, add additional clamp.
Check hose.
Discharge hose does not stay on
coupling.
Hose kinked or end blocked?
PAGE 28 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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TROUBLESHOOTING
TABLE 9. PUMP TROUBLESHOOTING (Continued)
SYMPTOM
POSSIBLE PROBLEM
Incorrect engine speed speed?
SOLUTION
Increase engine speed.
Piping is clogged or damaged?
Clogged pump?
Clean or replace piping.
Clean pump well.
Flow rate is slow.
Discharge line restricted or undersize?
Collapsible disc hose?
Flush out piping or replace.
Replace with rgid or noncollapsible hose.
Straighten hose.
Too many hose bends?
Hose lines too long?
Shorten hose lines.
Faulty suction piping?
Replace piping.
Pump located too far from fluid source?
Gate valve closed?
Move pump closer to source.
Open gate valve.
Pump runs but no fluid.
Clogged strainer?
Clean or replace strainer.
Lower the height.
Discharge height too high?
Leak in suction line?
Repair suction line.
Leak in foot valve?
Repair or replace valve.
Replace diaphragm.
Pump starts and stops
pumping.
Diaphragm has a crack or hole?
Defective or clogged flapper valves?
Pump not secured properly?
restricted suction line?
Clean or replace flapper valves.
Secure pump.
Excessive noise while pump is
in operation.
Clean or correct restriction.
Replace diaphragm.
Diaphragm has crack or hole?
Screw loose holding diaphragm?
Water can be seen on top of
diaphragm.
Tighten screw.
Discharge height is over 25 feet (7.62 meters) of head? Lower height.
Material jammed in pump well? Clean out pump well.
Pump stalls repeatedly or stops
for no apparent reason.
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 29
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EXPLANATION OF CODE IN REMARKS COLUMN
The following section explains the different symbols and
QTY. Column
remarks used in the Parts section of this manual. Use the
help numbers found on the back page of the manual if there
are any questions.
Numbers Used — Item quantity can be indicated by a
number, a blank entry, or A/R.
A/R (As Required) is generally used for hoses or other
parts that are sold in bulk and cut to length.
NOTICE
The contents and part numbers listed in the parts
section are subject to change without notice.Multiquip
does not guarantee the availability of the parts listed.
A blank entry generally indicates that the item is not sold
separately.Other entries will be clarified in the“Remarks”
Column.
SAMPLE PARTS LIST
REMARKS Column
NO. PART NO. PART NAME
QTY. REMARKS
Some of the most common notes found in the “Remarks”
Column are listed below. Other additional notes needed
to describe the item can also be shown.
1
2%
12345
BOLT......................1 .....INCLUDES ITEMS W/%
WASHER, 1/4 IN............NOT SOLD SEPARATELY
WASHER, 3/8 IN....1 .....MQ-45T ONLY
2% 12347
3
4
12348
12349
HOSE ..................A/R ...MAKE LOCALLY
BEARING ..............1 .....S/N 2345B AND ABOVE
Assembly/Kit — All items on the parts list with the
same unique symbol will be included when this item is
purchased.
NO. Column
Indicated by:
Unique Symbols — All items with same unique
symbol
“INCLUDES ITEMS W/(unique symbol)”
(@, #, +, %, or >) in the number column belong to the
same assembly or kit, which is indicated by a note in the
“Remarks” column.
Serial Number Break — Used to list an effective serial
number range where a particular part is used.
Indicated by:
Duplicate Item Numbers — Duplicate numbers indicate
multiple part numbers, which are in effect for the same
general item, such as different size saw blade guards in
use or a part that has been updated on newer versions
of the same machine.
“S/N XXXXX AND BELOW”
“S/N XXXX AND ABOVE”
“S/N XXXX TO S/N XXX”
Specific Model Number Use — Indicates that the part
is used only with the specific model number or model
number variant listed. It can also be used to show a
part is NOT used on a specific model or model number
variant.
NOTICE
When ordering a part that has more than one item
number listed, check the remarks column for help in
determining the proper part to order.
Indicated by:
“XXXXX ONLY”
“NOT USED ON XXXX”
PART NO. Column
Numbers Used — Part numbers can be indicated by a
number, a blank entry, or TBD.
“Make/Obtain Locally” — Indicates that the part can
be purchased at any hardware shop or made out of
available items.Examples include battery cables, shims,
and certain washers and nuts.
TBD (To Be Determined) is generally used to show a
part that has not been assigned a formal part number
at the time of publication.
“Not Sold Separately”— Indicates that an item cannot
be purchased as a separate item and is either part of an
assembly/kit that can be purchased, or is not available
for sale through Multiquip.
A blank entry generally indicates that the item is not sold
separately or is not sold by Multiquip. Other entries will
be clarified in the “Remarks” Column.
PAGE 30 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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SUGGESTED SPARE PARTS
MQD2H/D3H DIAPHRAGM PUMP
1TO 3 UNITS WITH
HONDA GX120UT1QX2 ENGINE
Qty.
P/N
Description
3 ............ 17210ZE0822 ....... ELEMENT AIR CLEANER DUAL
3 ............ 9807955876 .......... SPARK PLUG
1 ............ 17620Z0T813 ....... CAP, FUEL WITH GASKET
1 ............ 28462ZH8003 ....... ROPE STARTER
1 ............ 336030000 ............ DIAPHRAGM 2-INCH
1 ............ 213200000 ............ DIAPHRAGM 3-INCH
2 ............ 336007090 ............ FLAP VALVE 2-INCH
2 ............ 335407090 ............ FLAP VALVE 3-INCH
1 ............ 212400000 ............ PLUG, 2 & 3-INCH FILL
1 ............ 212500000 ............ PRIMING PLUG GASKET, 2 & 3-INCH
1 ............ C23017000 ........... STRAINER 2-INCH
1 ............ 168000000 ............ STRAINER 3-INCH
Part number on this Suggested
Spare Parts List may super cede/
replace the P/N shown in the text
pages of this book.
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 31
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NAME PLATE AND DECALS ASSY.
MQ-D2H/3H — NAMEPLATE AND DECALS ASSY.
NAMEPLATE AND DECALS ASSY.
BACK
4
TAG
FRONT
3
MODEL
SERIAL NO.
2
GREASE
CONNECTING
ROD BEARING
MONTHLYDCL1261
1
6
1
CAUTION
PRECAUCION
ATTENTION
Avoid equipment damage:
Use noncollapsable hose or pipe
on both suction and discharge.
Evite dano en el equipo:
Éviter l’endommagement du
materiel:
Asegurese que sea reforzada tanto
en la succion como en la
descarga.
Il faut prendre soin d’utiliser un
tuyau renforce pour l’aspiration et
la decharge. Il ne faut pas
Do not exceed (60) strokes per
minute with the diaphragm pump.
No exceda (60) carreras por
minuto con la bomba de
diafragma.
7
1
depasser 60 coups/min avec la
pompe
a
diaphragme.
5/2003
CAUTION
PRECAUCION
ATTENTION
Avoid personal injury:
Do not pump flammable
substances with this unit. Exposure
to chemicals can be hazardous.
Follow instructions issued by
chemical manufacturer.
Evite las lesiones personales:
No bombee sustancias inflamables
con esta unidad. La exposición
productos químicos puede ser
peligrosa. Siga las instrucciones
publicadas por el fabricante del
producto químico.
Éviter les blessures corporelles:
Ne pas pomper de substances
inflammables avec cette pompe.
L’exposition aux produits chimiques
peut être dangereuse. Suivre les
instructions données par le
fabricant du produit chimique.
10/96
a
CAUTION
Avoid personal injury:
KEEP power
shields and
guards in place.
5
1
PRECAUCION
Evite las lesiones
personales:
Garder tous
les ecrans et
gardes de
securite en
place.
ATTENTION
Eviter les biessures
corporelles:
Mantenga las
defensas y las
protecciones
de la energia
en su lugar
5/2003
NOTES:
ITEMS 5, 6 AND 7 NO LONGER
AVAILABLE, REPLACED BY ITEM 4.
1
PAGE 32 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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NAME PLATE AND DECALS ASSY.
MQ-D2H/3H — NAMEPLATE AND DECALS ASSY.
NAMEPLATE AND DECALS ASSY.
NO.
1
2
PART NO.
DCL1261
512910
PART NAME
DECAL, GREASE MONTHLY
DECAL, MQ LOGO
QTY.
1
1
REMARKS
3
4
5
6
DECAL, NAMEPLATE ..................................................1..........CONTACT MQ PARTS DEPT
DECAL, CAUTION, KIT
DECAL, CAUTION, KEEP GUARDS IN PLACE...........1..........NO LONGER AVAILABLE
DECAL, CAUTION, AVOID EQUIPMENT DAMAGE ....1..........NO LONGER AVAILABLE
DECAL, CAUTION, AVOID PERSONAL INJURY .........1..........NO LONGER AVAILABLE
335925190
205901900
205901900
205901900
1
7
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 33
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MQD2H — WATERBOX AND FLAP VALVE ASSY.
WATERBOX AND FLAP VALVE ASSY. (2-INCH)
PAGE 34 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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MQD2H — WATERBOX AND FLAP VALVE ASSY.
WATERBOX AND FLAP VALVE ASSY. (2-INCH)
NO.
1
2
3
4
5
5
6
8
11
12
13
14
15
16
17
18
19
20
20
21
PART NO.
336005001
212400000
212500000
316017000
176601300
175900100
212100000
336007090
336000101
336005201
176001100
336009200
336030000
C23017000
178000000
176601600
179800200
179800100
179300100
178200100
PART NAME
SUCTION PRIMING CHAMBER
PRIMING PLUG
PRIMIMG PLUG GASKET
NPT PIPE NIPPLES (PACK OF TWO)
BOLT 1/2”-13 X 1-1/2"
BOLT 3/8"-16 X 1-1/2"
RETAINER PIN 1/8" X 3/8"
FLAPPER VALVE ASSY
PUMP WELL
QTY. REMARKS
1
1
1
1
4
4
2
2
1
1
3
1
1
1
3
4
4
8
8
4
DISCHARGE PLATE
CARRIAGE BOLT 3/8"-16 X 2-1/4"
DIAPHRAGM RETAINER
DIAPHRAGM
NPT STRAINER 3/8" HOLES
NUT, HEX 3/8"-16
BOLT 1/2"-13 X 2-1/4"
FLAT WASHER 1/2"
SPLIT LOCKWASHER 1/2"
SPLIT LOCKWASHER 3/8"
NUT 1/2"-13
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 35
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MQD2H —PUMP ASSY.
PUMP ASSY. (2-INCH)
37
38
34
28
33
1
27
31
26
35
24
29
32
30
28
13
27
25
21
8
7
5
4
3
12
22
2
1
6
18
12
10
17
11
20
19
16
15
13
39
14
2
9
40
43A
43B
42
NOTES:
TORQUE TO 7-8 FT. LBS.
1
2
41
TORQUE TO 55-60 FT. LBS.
PAGE 36 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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MQD2H —PUMP ASSY.
PUMP ASSY. (2-INCH)
NO.
1
PART NO.
336019100
336019000
336009001
180103000
336009401
173800100
176601800
PART NAME
QTY. REMARKS
INTERNAL RETAINING RING 1-1/2"
1
2
PLUNGER BEARING ................................................ 1 ...... INCLUDES ITEMS W/#
PLUNGER ARM
SPACER 5/8" X 1-1/16"
CRANK
SOCKET SET SCREW 5/16"-18 X 1/2"
BOLT 1/2"-13 X 2-3/4"
LOCKNUT 3/4" -16
OIL SEAL
GEAR BOX OUTPUT HALF
OUTPUT BALL BEARING #6307
DOWEL PIN 1/4" X 3/4"
INTERMEDIATE BALL BEARING #6304
GASKET
IDLER PINION SHAFT
WOODRUFF KEY #406 1/8" X 3/4"
OUTPUT SHAFT
3
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
2
1
12
12
1
1
1
1
1
1
1
1
4
2
2
2
2
1
1
4
5
6
7
8#
9
214800000
335409001
335419000
171700200
335419100
335430000
335412100
215700000
335414001
214100000
335412000
214900000
180606400
335419200
335409101
176700200
335410600
178800100
171800400
176700100
335419400
335412200
214800100
335419300
151700100
218100500
335409301
174500200
176601300
175900100
179800100
179300100
336002001
335410300
171601000
171201000
10
11
12
13
14
15
16
17
18
19
20
21
22
24
25
26
27
28
29
30
31
32
33
34
35
37
38
39
39
40
40
41
42
43A
43B
WOODRUFF KEY #1008 5/16" X 1"
OUTPUT GEAR
INTERNAL SPUR GEAR
EXTERNAL RETAINING RING 1-1/8"
IDLER BALL BEARING #6302
GEAR BOX INPUT HALF
NPT PIPE PLUG 1/4"
LIFT BRACKET
LOCK WASHER 1/4"
BOLT 1/4"-20 X 7/8"
NPT PIPE PLUG 1/2"
INPUT PINION BALL BEARING OPEN #6007
INPUT PINION
OIL SEAL, INPUT PINION
INPUT PINION BALL BEARING SEALED #6007
KEY 3/16" X 3/16" X 1-1/2"
O-RING #143 BUNA N
ADAPTER (GASOLINE ENGINE)
FLANGE SCREW 5/16"-18 X 3/4"
BOLT 1/2"-13 X 1-1/2"
BOLT 3/8"-16 X 1-1/2"
SPLIT LOCKWASHER 1/2"
SPLIT LOCKWASHER 3/8"
PUMP BASE
PLUNGER GUARD
KNOB 1/4"-20 X 5/16" ............................................... 1 ...... NO LONGER AVAILABLE
SLOTTED SCREW 1/4"-20 X 5/16"
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 37
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MQD2H —HANDLE, ENGINE, AND WHEEL ASSY.
HANDLE, ENGINE AND WHEEL ASSY. (2-INCH)
7
8
9
6
20
1
2
5
3
13
11
12
10
15
16
14
18
17
19
PAGE 38 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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MQD2H —HANDLE, ENGINE, AND WHEEL ASSY.
HANDLE, ENGINE AND WHEEL ASSY. (2-INCH)
NO.
1
2
PART NO.
335411690
13178
PART NAME
QTY. REMARKS
HANDLE .................................................................... 1 ...... REPLACES 215200000
BOLT 1/2"-13 X 2-1/4" ............................................... 2 ...... REPLACES 176601300 &
175900100
FLAT WASHER 1/2"................................................... 2 ...... REPLACES 179800100 &
179300100
3
0447
5
6#
7
335410800
163000700
ENGINE MOUNT
BOLT
HONDA GX120 ENGINE
BOLT
WASHER
NUT
BOLT 1/4"-20 X 3"
SAE WASHER 1/4"
FLANGE BOLT 5/16-18 X 3/4"
FLANGE NUT 1/4"-20
NUT 5/8"-18
WHEEL BRACKET
WHEEL
WASHER 5/8"
BOLT 5/8"-18 X 4"
KIT, HARDWARE, GASOLINE ENGINE ADAPTER
1
4
1
4
4
4
2
2
4
2
2
2
2
2
2
8#
9#
10#
11
12
13
14
15
16
17
18
19
20
173401300
178900000
174500200
176600000
178202000
335410900
166300000
179900000
176900000
335A42090
(PACK OF 4) .............................................................. 1 ...... INCLUDES ITEMS W/#
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 39
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MQD3H —WATERBOX AND FLAP VALVE ASSY.
WATERBOX AND FLAP VALVE ASSY. (3-INCH)
PAGE 40 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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MQD3H —WATERBOX AND FLAP VALVE ASSY.
WATERBOX AND FLAP VALVE ASSY. (3-INCH)
NO.
1
2
3
4
5
6
8
11
12
13
14
15
16
17
18
19
20
PART NO.
212300001
212400000
212500000
327017000
176601300
212100000
335407090
212000100
213100001
176601500
213300000
213200000
168000000
178200100
176601600
179800200
179800100
PART NAME
SUCTION PRIMING CHAMBER
PRIMING PLUG
PRIMIMG PLUG GASKET
NPT PIPE NIPPLES (PACK OF TWO)
BOLT 1/2”-13 X 1-1/2"
RETAINER PIN 1/8" X 3/8"
FLAPPER VALVE ASSY
PUMP WELL ............................................................. 1 ...... REPLACES P/N 212000001
DISCHARGE PLATE
CARRIAGE BOLT 1/2"-13 x 2"
DIAPHRAGM RETAINER
DIAPHRAGM
NPT STRAINER 3/8" HOLES
NUT, HEX 1/2"-13
QTY. REMARKS
1
1
1
1
4
2
2
1
3
1
1
1
5
2
2
6
BOLT 1/2"-13 X 2-1/4"
FLAT WASHER 1/2"
SPLIT LOCKWASHER 1/2"
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 41
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MQD3H — PUMP ASSY.
PUMP ASSY. (3-INCH)
8
5
2
37
3
3
4
40
7
38
2
34
6
28
33
1
1
27
31
OLD STYLE
PLUNGER ASSY.
26
35
24
29
32
30
28
13
27
25
21
12
22
4
44
18
NEW STYLE
PLUNGER ASSY.
12
10
17
11
20
19
16
15
13
39
14
2
9
40
43A
43B
NOTES:
42
TORQUE TO 7-8 FT. LBS.
1
2
3
41
TORQUE TO 55-60 FT. LBS.
OLD STYLE PLUNGER ARM, ITEM 3,
NO LONGER AVAILABLE. IF
REPLACEMENT IS REQUIRED,
ORDER NEW STYLE PLUNGER ASSY.
PARTS.
PAGE 42 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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MQD3H — PUMP ASSY.
PUMP ASSY. (3-INCH)
NO.
1
PART NO.
170400200
213600000
PART NAME
QTY. REMARKS
FLAT HD MACH SCHREW #10-32 X 1/2" ................. 6 ...... OLD STYLE PLUNGER
BEARING RETAINER................................................ 2 ...... OLD STYLE PLUNGER
PLUNGER ARM ........................................................ 1 ...... NO LONGER AVAILABLE
PLUNGER ARM ........................................................ 1 ...... NEW STYLE PLUNGER
PLUNGER BEARING ................................................ 1 ...... REPLACES P/N 213800000
2
3
3
213400001
213800090
214000001
173800100
176601800
178401000
214800000
335409001
335419000
171700200
335419100
335430000
335412100
215700000
335414000
214100000
335412000
214900000
180606400
335419200
335409101
176700200
335410600
178800100
171800400
176700100
335419400
335412200
214800100
335419300
151700100
218100500
335409301
174500200
176601300
179800100
335400101
335410300
171601000
171201000
335019000
4
5
CRANK
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
2
1
12
12
1
1
1
1
1
1
1
1
4
4
5
1
1
6
SOCKET SET SCREW 5/16"-18 X 1/2"
BOLT 1/2"-13 X 2-3/4"
7
8
LOCKNUT 3/4" -16
OIL SEAL
GEAR BOX OUTPUT HALF
OUTPUT BALL BEARING #6307
DOWEL PIN 1/4" X 3/4"
INTERMEDIATE BALL BEARING #6304
GASKET
IDLER PINION SHAFT
WOODRUFF KEY #406 1/8" X 3/4"
OUTPUT SHAFT
WOODRUFF KEY #1008 5/16" X 1"
OUTPUT GEAR
9
10
11
12
13
14
15
16
17
18
19
20
21
22
24
25
26
27
28
29
30
31
32
33
34
35
37
38
39
40
41
42
43A
43B
44
INTERNAL SPUR GEAR
EXTERNAL RETAINING RING 1-1/8"
IDLER BALL BEARING #6302
GEAR BOX INPUT HALF
NPT PIPE PLUG 1/4"
LIFT BRACKET
LOCK WASHER 1/4"
BOLT 1/4"-20 X 7/8"
NPT PIPE PLUG 1/2"
INPUT PINION BALL BEARING OPEN #6007
INPUT PINION
OIL SEAL, INPUT PINION
INPUT PINION BALL BEARING SEALED #6007
KEY 3/16" X 3/16" X 1-1/2"
O-RING #143 BUNA N
ADAPTER (GASOLINE ENGINE)
FLANGE SCREW 5/16"-18 X 3/4"
BOLT 1/2"-13 X 1-1/2"
SPLIT LOCKWASHER 1/2"
PUMP BASE
PLUNGER GUARD
KNOB 1/4"-20 X 5/16" ............................................... 1 ...... NO LONGER AVAILABLE
SLOTTED SCREW 1/4"-20 X 5/16"
2
RETAINER RING ....................................................... 1 ...... NEW STYLE PLUNGER
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 43
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MQD3H — HANDLE, ENGINE, AND WHEEL ASSY.
MQ-D3H — HANDLE, ENGINE ANDWHEEL ASSY. (3-INCH)
HANDLE, ENGINE AND WHEEL ASSY. (3-INCH)
7
8
9
6
20
1
2
3
5
13
11
12
10
15
16
14
18
17
19
PAGE 44 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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MQD3H — HANDLE, ENGINE, AND WHEEL ASSY.
MQ-D2H/D3H — HANDLE, ENGINE ANDWHEEL ASSY. (3-INCH)
HANDLE, ENGINE AND WHEEL ASSY. (3-INCH)
NO.
1
PART NO.
335411690
13178
PART NAME
QTY. REMARKS
HANDLE .................................................................... 1 ...... REPLACES 215200000
BOLT 1/2"-13 X 2-1/4" ............................................... 2 ...... REPLACES 176601600
FLAT WASHER 1/2"................................................... 2 ...... REPLACES 179800200
2
3
5
6#
7
0447
335410800
ENGINE MOUNT
BOLT
HONDA GX120 ENGINE
BOLT
WASHER
NUT
BOLT 1/4"-20 X 3"
SAE WASHER 1/4"
FLANGE BOLT 5/16-18 X 3/4"
FLANGE NUT 1/4"-20
NUT 5/8"-18
1
4
1
4
4
4
2
2
4
2
2
2
2
2
2
163000700
8#
9#
10#
11
12
13
14
15
16
17
18
19
20
173401300
178900000
174500200
176600000
178202000
335410900
166300000
179900000
176900000
335A42090
WHEEL BRACKET
WHEEL
WASHER 5/8"
BOLT 5/8"-18 X 4"
KIT, HARDWARE, GASOLINE ENGINE ADAPTER
(PACK OF 4) .............................................................. 1 ...... INCLUDES ITEMS W/#
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 45
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TERMS AND CONDITION OF SALE — PARTS
5. Parts must be in new and resalable
condition, in the original Multiquip
package (if any), and with Multiquip part
numbers clearly marked.
Multiquip reserves the right to quote and
sell direct to Government agencies, and to
Original Equipment Manufacturer accounts
who use our products as integral parts of their
own products.
PAYMENT TERMS
Terms of payment for parts are net 30 days.
FREIGHT POLICY
6. The following items are not returnable:
All parts orders will be shipped collect or
prepaid with the charges added to the invoice.
All shipments are F.O.B. point of origin.
Multiquip’s responsibility ceases when a
signed manifest has been obtained from the
carrier, and any claim for shortage or damage
must be settled between the consignee and
the carrier.
a. Obsolete parts. (If an item is in the
price book and shows as being
replaced by another item, it is
obsolete.)
SPECIAL EXPEDITING SERVICE
A $35.00 surcharge will be added to the
invoice for special handling including bus
shipments, insured parcel post or in cases
where Multiquip must personally deliver the
parts to the carrier.
b. Any parts with a limited shelf life
(such as gaskets, seals, “O” rings,
and other rubber parts) that were
purchased more than six months
prior to the return date.
LIMITATIONS OF SELLER’S LIABILITY
MINIMUM ORDER
Multiquip shall not be liable hereunder for
damages in excess of the purchase price of
the item with respect to which damages are
claimed, and in no event shall Multiquip be
liable for loss of profit or good will or for any
other special, consequential or incidental
damages.
The minimum charge for orders from Multiquip
is $15.00 net. Customers will be asked for
instructions regarding handling of orders not
meeting this requirement.
c. Any line item with an extended
dealer net price of less than
$5.00.
d. Special order items.
RETURNED GOODS POLICY
e. Electrical components.
f. Paint, chemicals, and lubricants.
g. Decals and paper products.
h. Items purchased in kits.
Return shipments will be accepted and
credit will be allowed, subject to the following
provisions:
LIMITATION OF WARRANTIES
No warranties, express or implied, are
made in connection with the sale of parts or
trade accessories nor as to any engine not
manufactured by Multiquip. Such warranties
made in connection with the sale of new,
complete units are made exclusively by a
statement of warranty packaged with such
units, and Multiquip neither assumes nor
authorizes any person to assume for it
any other obligation or liability whatever in
connection with the sale of its products. Apart
from such written statement of warranty,
there are no warranties, express, implied or
statutory, which extend beyond the description
of the products on the face hereof.
1. A Returned Material Authorization
must be approved by Multiquip prior to
shipment.
7. The sender will be notified of any material
received that is not acceptable.
8. Such material will be held for five
working days from notification, pending
instructions. If a reply is not received
within five days, the material will be
returned to the sender at his expense.
2. To obtain a Return Material Authorization,
a list must be provided to Multiquip
Parts Sales that defines item numbers,
quantities, and descriptions of the items
to be returned.
9. Credit on returned parts will be issued
at dealer net price at time of the original
purchase, less a 15% restocking
charge.
a. The parts numbers and descriptions
must match the current parts price
list.
b. The list must be typed or computer
generated.
10. In cases where an item is accepted, for
which the original purchase document
can not be determined, the price will be
based on the list price that was effective
twelve months prior to the RMA date.
c. The list must state the reason(s)
for the return.
Effective: February 22, 2006
d. The list must reference the sales
order(s) or invoice(s) under
which the items were originally
purchased.
11. Credit issued will be applied to future
purchases only.
PRICING AND REBATES
e. The list must include the name
and phone number of the person
requesting the RMA.
Prices are subject to change without prior
notice. Price changes are effective on a
specific date and all orders received on or
after that date will be billed at the revised price.
Rebates for price declines and added charges
for price increases will not be made for stock
on hand at the time of any price change.
3. AcopyoftheReturnMaterialAuthorization
must accompany the return shipment.
4. Freight is at the sender’s expense. All
parts must be returned freight prepaid to
Multiquip’s designated receiving point.
PAGE 46 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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NOTES
MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 47
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OPERATION AND PARTS MANUAL
HERE’S HOW TO GET HELP
PLEASE HAVE THE MODEL AND SERIAL
NUMBER ON-HAND WHEN CALLING
UNITED STATES
Multiquip Corporate Office
MQ Parts Department
18910 Wilmington Ave.
Carson, CA 90746
Contact: mq@multiquip.com
Tel. (800) 421-1244
Fax (800) 537-3927
800-427-1244
310-537-3700
Fax: 800-672-7877
Fax: 310-637-3284
Service Department
Warranty Department
800-421-1244
310-537-3700
Fax: 310-537-4259
800-421-1244
310-537-3700
Fax: 310-943-2249
Technical Assistance
800-478-1244
Fax: 310-943-2238
MEXICO
UNITED KINGDOM
MQ Cipsa
Multiquip (UK) Limited Head Office
Carr. Fed. Mexico-Puebla KM 126.5
Momoxpan, Cholula, Puebla 72760 Mexico
Contact: pmastretta@cipsa.com.mx
Tel: (52) 222-225-9900
Unit 2, Northpoint Industrial Estate, Tel: 0161 339 2223
Fax: (52) 222-285-0420 Globe Lane,
Dukinfield, Cheshire SK16 4UJ
Contact: sales@multiquip.co.uk
Fax: 0161 339 3226
CANADA
Multiquip
4110 Industriel Boul.
Laval, Quebec, Canada H7L 6V3
Contact: jmartin@multiquip.com
Tel: (450) 625-2244
Tel: (877) 963-4411
Fax: (450) 625-8664
© COPYRIGHT 2012, MULTIQUIP INC.
Multiquip Inc, the MQ logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other trademarks are the property
of their respective owners and used with permission.
This manual MUST accompany the equipment at all times. This manual is considered a permanent part of the equipment and should remain with the unit if resold.
The information and specifications included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in
this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifications, design or the information published
in this publication at any time without notice and without incurring any obligations.
Your Local Dealer is:
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