Triplex Ceramic
Plunger Pump
Models Manual
Models
GP8055, GP8060, GP8065
Contents:
Installation Instructions:
Pump Specifications:
Exploded View/Parts List:
Repair Kits/Tool List:/Torque Specifications
Troubleshooting Chart:
Repair Instructions:
page 2
page 3-5
pages 6-7
page 8
page 8
pages 9-11
back page
back page
Dimensions:
WarrantyInformation
Updated 3/07
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Specifications
Model GP8055
U.S.
(Metric)
Volume.............................................................Up to 75.5 GPM ...... (285 LPM)
Discharge Pressure .......................................... Up to 3000 PSI ........ (200 bar)
Speed ...............................................................Up to 580 RPM ....... 580 RPM
Inlet Pressure...................................................Up to 29 PSI............ (2.0 bar)
Plunger Diameter .............................................2.17” ........................ 55mm
Plunger Stroke .................................................2.83” ........................ 72mm
Crankshaft Diameter........................................2.76” ........................ 70mm
Key Width........................................................ 0.55” ........................ 14mm
Crankshaft Mounting......................................................................... Either side
Shaft Rotation .................................................................................... Top of pulley towards manifold
Temperature of Pumped Fluids .......................Up to 140 oF ............ (60 oC)
Inlet Ports .......................................................................................... (2) 3" BSPP
Discharge Ports.................................................................................. (2) 1-1/4" BSPP
Weight ..............................................................705 lbs. .................... (320kg)
Crankcase Oil Capacity ...................................3.3 Gal. .................... (12.5 liters)
Fluid End Material............................................ Nickle plated Spheroidical Cast Iron
Consult the factory for special requirements that must be met if the pump is to
operate beyond one or more of the limits specified above.
HORSEPOWER RATINGS:
GP8055 HORSEPOWER REQUIREMENTS
The rating shown are the power
requirements for the pump. Gas
engine power outputs must be
approximately twice the pump
power requirements shown above.
RPM GPM 500 PSI 1000 PSI 2000 PSI 3000 PSI
300 39
400 52
500 65
580 75.5
13.9
18.6
23.2
27.0
27.9
37.1
46.4
53.9
55.7
74.3
92.9
83.6
111.4
139.3
161.8
107.9
We recommend a 1.1 service factor
be specified when selecting an
electric motor as the power source.
To compute specific pump horse
power requirements, use the
following formula:
SPECIAL NOTE:
GPM X PSI
= HP
1400
The theoretical gallons per revolution (gal/rev) is 0.130.
To find specific outputs at various RPM, use the formula:
GPM = 0.130 x RPM
3
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Specifications
Model GP8060
U.S.
(Metric)
Volume.............................................................Up to 90 GPM ......... (341 LPM)
Discharge Pressure .......................................... Up to 2500 PSI ........ (172 bar)
Speed ...............................................................Up to 580 RPM ....... 580 RPM
Inlet Pressure...................................................Up to 29 PSI............ (2.0 bar)
Plunger Diameter .............................................2.36” ........................ 60mm
Plunger Stroke .................................................2.83” ........................ 72mm
Crankshaft Diameter........................................2.76” ........................ 70mm
Key Width........................................................ 0.55” ........................ 14mm
Crankshaft Mounting......................................................................... Either side
Shaft Rotation .................................................................................... Top of pulley towards manifold
Temperature of Pumped Fluids .......................Up to 140 oF ............ (60 oC)
Inlet Ports .......................................................................................... (2) 3" BSPP
Discharge Ports.................................................................................. (2) 1-1/4" BSPP
Weight ..............................................................705 lbs./ ................... (320kg)
Crankcase Oil Capacity ...................................3.3 Gal. .................... (12.5 liters)
Fluid End Material............................................ Nickle plated Spheroidical Cast Iron
Consult the factory for special requirements that must be met if the pump is to
operate beyond one or more of the limits specified above.
HORSEPOWER RATINGS:
GP8060 HORSEPOWER REQUIREMENTS
The rating shown are the power
requirements for the pump. Gas
engine power outputs must be
approximately twice the pump
power requirements shown above.
RPM GPM 500 PSI 1000 PSI 2000 PSI 2500 PSI
300 47
400 62
500 78
580 90
16.8
22.1
27.9
32.1
33.6
44.3
55.7
64.3
67.1
88.6
111.4
128.6
83.9
110.7
139.3
160.7
We recommend a 1.1 service factor
be specified when selecting an
electric motor as the power source.
To compute specific pump horse
power requirements, use the
following formula:
SPECIAL NOTE:
GPM X PSI
= HP
1400
The theoretical gallons per revolution (gal/rev) is 0.155.
To find specific outputs at various RPM, use the formula:
GPM = 0.155 x RPM
4
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Specifications
Model GP8065
U.S.
(Metric)
Volume............................................................ Up to 105 GPM ........ (400 LPM)
Discharge Pressure ......................................... Up to 2000 PSI ......... (140 bar)
Speed .............................................................. Up to 580 RPM ........ 580 RPM
Inlet Pressure.................................................. Up to 29 PSI ............ (2.0 bar)
Plunger Diameter............................................ 2.55”......................... 65mm
Plunger Stroke ................................................ 2.83”......................... 72mm
Crankshaft Diameter....................................... 2.76”......................... 70mm
Key Width....................................................... 0.55”......................... 14mm
Crankshaft Mounting......................................................................... Either side
Shaft Rotation .................................................................................... Top of pulley towards manifold
Temperature of Pumped Fluids ...................... Up to 140 oF ............. (60 oC)
Inlet Ports .......................................................................................... (2) 3" BSPP
Discharge Ports.................................................................................. (2) 1-1/4" BSPP
Weight ............................................................. 705 lbs. ..................... (320kg)
Crankcase Oil Capacity .................................. 3.3 Gal. ..................... (12.5 liters)
Fluid End Material........................................... Nickle plated Spheroidical Cast Iron
Consult the factory for special requirements that must be met if the pump is to
operate beyond one or more of the limits specified above.
HORSEPOWER RATINGS:
GP8065 HORSEPOWER REQUIREMENTS
The rating shown are the power
requirements for the pump. Gas
engine power outputs must be
approximately twice the pump
power requirements shown above.
RPM GPM 500 PSI 750 PSI 1000 PSI 2000 PSI
300 54
400 72
500 91
580 105
19.3
25.7
32.5
37.5
28.9
38.6
48.8
56.3
38.6
51.4
65.0
75.0
77.1
102.9
130.0
150.0
We recommend a 1.1 service factor
be specified when selecting an
electric motor as the power source.
To compute specific pump horse
power requirements, use the
following formula:
SPECIAL NOTE:
GPM X PSI
= HP
The theoretical gallons per revolution (gal/rev) is 0.181.
To find specific outputs at various RPM, use the formula:
1400
GPM = 0.181 x RPM
5
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Exploded View - GP8050, GP8060, GP8065
6
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Part List - GP8050, GP8060, GP8065
Item
1
2
8
9
12
13
14
14A
15
16
17
18
19
20
21
21A
21B
21C
22
22
22A
23
24
25
28
29
30
30A
30B
30C
30D
31
32
32A
33
33A
33B
33C
34
Part
Description
Crankcase
Oil Filler Plug Assy with Vent
Oil Dipstick Assy
O-Ring
Qty
1
1
1
1
2
2
1
1
1
2
16
16
1
1
1
5
5
Item
41
41
41
42
42
42
43
43
43
45
45
45
49
49A
50
50A
50B
51
51A
51B
51C
51D
51E
51F
52
52A
52B
52C
52D
52E
52F
56
56A
57
57A
58
59
59A
60
Part
Description
Qty
3
3
3
9
9
9
3
3
3
3
3
3
8
8
1
2
1
3
3
3
3
3
3
3
3
3
3
3
6
3
3
3
3
3
3
12
1
1
1
1
6
6
1
1
1
2
1
05024
06912
05035
06225
07109
07182
05036
05111
05112
05037
05038
05039
05040
05041
05044
05042
05043
05113
05045
05114
05046
05104
05047
05048
05049
05057
05052
05117
05068
05276
06997
05069
05277
05118
05070
05278
05119
05071
05279
05072
05073
05074
13162
05075
05076
05077
05078
05079
07658
05080
05081
05082
05077
05084
05079
06258
05080
05081
05085
06258
05086
06078
05087
07109
07661
06909
05088
06090
06934
05122
13358
05026
05027
05028
05029
Pressure Ring (GP8065)
Pressure Ring (GP8060)
Pressure Ring (GP8055)
V Sleeve (GP8065)
V Sleeve (GP8060)
V Sleeve (GP8055)
Sleeve Support Ring (GP8065)
Sleeve Support Ring (GP8060)
Sleeve Support Ring (GP8055)
Seal Tension Spring (GP8065)
Seal Tension Spring (GP8060)
Seal Tension Spring (GP8055)
Stud Bolt
Hexagon Nut
Valve Casing
Centering Stud
Discharge Casing
Suction Valve Assy.
Spring Tension Cap
Suction Valve Seat
Valve Plate
Plug G1/2
Seal
Bearing Cover Closed
Bearing Cover Open
Radial Shaft Seal
O-Ring
Hexagon Socket Screw
Spring Ring
Clip Ring
Tapered Roller Bearing
Tapered Roller Bearing
Fitting Disc
Fitting Disc
Fitting Disc
Crankshaft (For Gearbox Pumps) 1
Crankshaft
Spacer Ring
Fitting Key
Conn-rod Assy
Crosshead c/w Plunger
Crosshead Pin
Hexagon Screw
Cover Plate
5
1
1
1
3
3
3
5
1
5
5
10
1
3
3
3
3
3
3
3
3
O-Ring
Valve Spring
Valve Spring Guide
Discharge Valve Assy
Spring Tension Cap
Discharge Valve Seat
Valve Plate
O-Ring
Valve Spring
Valve Spring Guide
Discharge Valve Adaptor
O-Ring
Pressure Spring
Pressure Spring
Hexagon Socket Screw
Plug G1/2
Copper Seal
Plug G1 1/4
Plug G3
Plug G1/4
Copper Gasket
Disc for Crankshaft
Hexagon Screw
Cooling Vane Plate
Seal for Gear Cover
Gear Cover
Hexagon Head Countersunk
Screw
Hexagon Socket Screw
Washer
Connection for Oil Cooler
Copper Seal
Plug G1/2
Connecting Branch
Hose Adaptor
Tube for Cooler
Hose Clamp
07225-0100 Hexagon Screw
13136
05053
05050
07623
05058
05057
05055
05056
05054
05059
05060
05063
Grommet
Washer
Splash Cover
Eye Bolt
Radial Shaft Seal
Compact Ring
Seal Retainer
O-Ring
Clip Ring
Fitting Disc
Oil Shield
36A
Cover for Plunger Pipe
(GP8060/GP8065)
Plunger Pipe (GP8065)
Plunger Pipe (GP8060)
Plunger Pipe (GP8055)
Tension Screw
61
62
62A
66
67
K1
K2
K3
K4
3
3
3
3
3
3
3
3
3
6
6
6
3
3
3
3
3
3
3
36B
36B
36B
36C
36D
36E
38
05115
05061
05280
05062
07665
06900
05064
05283
06667
13286
05281
05116
05065
05275
05066
06996
05067
07723
Copper Washer
Centering Sleeve
Seal Case (GP8060/GP8065)
Seal Case (GP8055)
O-Ring (GP8060/GP8065)
O-Ring (GP8055)
Support Ring (GP8055 Only)
Seal Sleeve (GP8065)
Seal Sleeve (GP8060)
Seal Sleeve (GP8055)
O-Ring
38
8
6
6
1
6
2
3
4
2
4
38A
38A
38B
39
39
39
39A
40
40
K5
K6
K7
K8
07381
08041
05030
07661
07109
05031
05032
05033
05034
K9
K10
K11
K12
K13
Seal Ring (GP8065)
Seal Ring (GP8060)
Seal Ring (GP8055)
40
7
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GP8055/GP8060/GP8065 PUMP REPAIR KITS
Plunger Packing Kits
GP8055 - #09616
Oil Seal Kit - #09221
Item
33A
33B
33C
Part #
Description
Qty.
Item
38A
38B
39A
40
Part #
Description
Qty.
6
6
6
3
05056 O-Ring
05057 Compact Ring
05058 Radial Shaft Seal
3
3
3
13286 O-Ring
05281 Support Ring
05066 O-Ring
07723 Seal Ring
05277 V-Sleeve
Inlet Valve Kit - #09587
42
9
Item
53B
53C
53D
53E
53F
Part #
Description
Qty.
1
1
1
1
GP8060 - #09617
05078 Inlet Valve Seat
05079 Valve Plate
07658 O-Ring
05080 Valve Spring
05081 Valve Spring Guide
Item
38A
39A
40
Part #
Description
Qty.
06667 O-Ring
05066 O-Ring
05067 Seal Ring
05069 V-Sleeve
6
6
3
9
1
42
GP8065 - #09586
Discharge Valve Kit - #09588
Item
38A
39A
40
Part #
Description
Qty.
Item
54B
54C
54D
54E
54F
Part #
Description
Qty.
1
1
1
1
06667 O-Ring
05066 O-Ring
06996 Seal Ring
06997 V-Sleeve
6
6
3
9
05084 Discharge Valve Seat
05079 Valve Plate
06258 O-Ring
05080 Valve Spring
05081 Valve Spring Guide
42
1
GP8055/GP8060/GP8065 TOOL LIST AND TORQUE SPECIFICATIONS
ITEM
17
24
33B
36C
49A
PART # DESCRIPTION
TORQUE Ft-lbs (NM) TOOL NEEDED
05038
05047
05054
05062
05073
Hexagon Socket Screw
Connecting Rod Hexagon Socket Screw
Clip Ring
Tension Screw
Hexagon Nut (manifold)
64 (87)
37 (50)
n/a
30 (40)
265 (360)
n/a
10mm allen wrench
8mm allen wrench
Industrial Snap ring pliers
16mm socket
30mm socket
51/52 05084/05076 Valve Assemblies
Valve puller (p/n 07662) - included with pump
12mm allen wrench
58
K5
05087
07381
Hexagon Socket Screw
Hexagon Socket Screw
132 (180)
n/a
8mm allen wrench
GP8000 Trouble Shooting
Problem
Pressure drops, water leaks
Cause
V-sleeves leak
Solution
Replace V-sleeves, examine surface of
plunger
Discharge or suction valve leaks Replace valve
Pressure drops, pump
becomes loud
Steam formation (cavitation)
Worn valves
Reduce suction height, reduce flow resistance
in inlet line, clean inlet filter, lower water
temperature
Examine valves
Irregular pressure
O-Ring on the valves or inlet valve Examine O-ring, examine valve casing for
adapter leaks
unevenness on the sealing surfaces
Oil leaks at visible part of
plunger
Gear sealing is leaky
Examine seals and running surface of plunger
Dirty mile-colored frothy oil
Oil has mixed with water
Replace oil immediately, find and fix the cause
Oil leakage on the crankshaft
Shaft seal ring leaks
Check seal and shaft
Noise increases without loss of Worn bearing
pressure
Dismantle gear, examine all parts, replace
worn parts, check oil level. If service life was
too short, check for excess strain or whether
lubrication intervals were too long. Only
specified lubricants are to be used
8
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GP8055/GP8060/GP8065 PUMP REPAIR INSTRUCTIONS
Valve Inspection and Repair
1) Remove bolts (58).
2) Remove discharge
casing (50B) up and away.
3) Take out pressure springs
(57A). Pull out assembled
valves (51 & 52) with fitting tool.
4) The spring tension cap (51A, 52A) is
screwed together with the valve seat (51B or
52B). Screw off spring tension cap. Takeout
springs (51E, 52E) and valve plate (51C, 52C).
Check sealing surfaces and O-rings (51D,
52D). Replace worn parts. Coat threads of
valve seat with silicon grease or molycote anti-
seize Cu-7439 when reassembling. Before
refitting the valves, clean the sealing surfaces
in the casing and check for any damage.
Tighten caps (58) at 133 Ft-lbs; check torque
tension after 8-10 operating hours.
To Check Seals and Plunger Pipe
5) Remove hexagon nuts (49A) and
valve casing together with seal case
(38) from crankcase (1). If neces-
sary, carefully tap the valve casing
(50) past the centering stud (50A)
using a rubber hammer.
IMPORTANT! If necessary, support
the valve casing by resting it on
wooden blocks or by using a pulley.
6) Remove tension screw (36C) and take
seal sleeve (39) together with all mounted
parts out of the drive. Pull plunger pipe out
of the seal assembly and check for any
damage. Carefully, remove seal rings (40)
and sleeves (42) with a screw driver.
9
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GP8055/GP8060/GP8065 PUMP REPAIR INSTRUCTIONS
8) Take out the seal case (38) from the valve (if
Be careful not to damage the seal
7)
necessary secure 2 screwdrivers in the front O-ring
sleeve (39) and pressure ring (41). Check the inner
diameter of the pressure ring for wear and if neces-
sary replace together with seals (40) and (42). Clean
all parts. New parts should be lightly coated with
silicon grease before installation. Inert the seal unit
(40, 41, 42 43) into the sleeve. Push the ceramic
plunger carefully through the seals from the crank-
case side. If necessary, the seals can be held tightly
using a suitable pipe support held on the other side of
the seal sleeve.
groove to extract seal casing from valve casing).
Coat seals with silicon grease before installing.
Mounting surfaces of the crankcase
and the valve casing must be clean and free of
damage. The components must lie exactly and
evenly on one another. The same exactness
applies for all centering positions in the crankcase,
pressure and valve casing.
Replacing Valve Casing:
8) Coat the seal sleeve lightly with anti-corrosive
grease (e.g. molycote no. Cu-7439) in its fitted area
towards the crankcase. Insert the seal sleeves in to
their crankcase fittings. Coat the threads of the
tension screw (36C) lightly with thread glue and
insert it together with a new copper ring (36D)
through the ceramic pipe. Turn the pump per hand
until the plunger (25) rests against the plunger pipe.
Tighten the tension screw at 30 Ft-lbs.
9) Put seal cases (38) in the centering holes of the
valve casing, then push valve casing carefully on to
centering studs (50A). Tighten hexagon screws (49A)
evenly and crosswise at 266 Ft.-lbs.
The torque tension on the screws (49A)
must be checked after 8-10 operating hours; the pump
must be at zero pressure. Thereafter, the tension is
to be checked every 200 operating hours.
Thread glue must never come between
the plunger pipe (36B) and centering sleeve (36E).
Overtensioning of the plunger pipe by excessive
tightening of the tension screw and/or dirt or damage
on the mounting surfaces can lead to plunger pipe
breakage. Insert the seal tension spring (45) and O-
ring (39A) in to the seal sleeve (39).
10
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GP8055/GP8060/GP8065 PUMP REPAIR INSTRUCTIONS
To Dismantle Crankcase Gear
10) Take out plungers and seal sleeves as described
above. Drain the oil by taking off the plug (12). After
removing the clip ring (33B), lever out the seal retainer
(33) with a screwdriver. Open hose adaptor (K11) and
remove gear cover (K3). Remove the cooling vane plate
(K1) by removing the screws (K4)
11) Remove the connecting rod screws (24).
Connecting rods are marked 1 to 3
for identification. Do not twist connecting rod
halves or interchange them. When reassembling,
the connecting rod must be fitted in their exact
original position on the crankshaft journals.
12) Push connecting rod halves together with the
crosshead as far as possible into the crosshead guide.
Take out bearing cover (14/14A) and push out crank-
shaft taking particular care that the con rod doesn’t get
bent. Check surfaces on the connecting rods (24),
crankshaft (22) and crossheads (25). Check the
surfaces of the crosshead guides in the crankcase for
any unevenness.
13) Reassemble in reverse order. Thread the long
end of the crankshaft together with the inner
bearing rings into the crankcase; then mount
outer bearing ring (20) and spacer ring (22A).
Mount connecting rod halves in their exact
original position and tighten at 37 Ft-lbs.
Connecting rods must be able to
move slightly sideways on the stroke journals.
14) Mount bearing cover (14A) and tighten screws (17) to 64 Ft-lbs. Adjust axial play (clearance) on the
crankshaft to minimum 0.1 mm / max. 0.15 mm using shims (21A/21B). The shaft should turn easily with little
clearance. Connecting rod must sit exactly in the middle of each crank pin. Fit the bearing cover (14) and
tighten the screws (17) at 64 Ft-lbs. Seal (32A) must always be installed so that the seal lip on the inside
diameter faces the oil. Possible axial float of the seal adaptor (33) to be compensated with shims (33C).
Mount cooling plate (K1) and gear cover (K3) with their respective seals (K2). When assembling the cooling
circuit line, make sure that the oil cooler connection (K7) is always joined to the upper connection (K3) of the
gear cover.
11
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GP8050, GP8060, GP8065 SERIES DIMENSIONS - (mm)
GIANT INDUSTRIES LIMITED WARRANTY
Giant Industries, Inc. pumps and accessories are warranted by the manufacturer to be free from defects in
workmanship and material as follows:
1. For portable pressure washers and self-service car wash applications, the discharge manifolds will never
fail, period. If they ever fail, we will replace them free of charge. Our other pump parts, used in portable
pressure washers and in car wash applications, are warranted for five years from the dateof shipment for
all pumps used in NON-SALINE, clean water applications.
2. One (1) year from the date of shipment for all other Giant industrial and consumer pumps.
3. Six (6) months from the date of shipment for all rebuilt pumps.
4. Ninety (90) days from the date of shipment for all Giant accessories.
This warranty is limited to repair or replacement of pumps and accessories of which the manufacturer’s evaluation
shows were defective at the time of shipment by the manufacturer. The following items are NOT covered or will void
the warranty:
1. Defects caused by negligence or fault of the buyer or third party.
2. Normal wear and tear to standard wear parts.
3. Use of repair parts other than those manufactured or authorized by Giant.
4. Improper use of the product as a component part.
5. Changes or modifications made by the customer or third party.
6. The operation of pumps and or accessories exceeding the specifications set forth in the Operations
Manuals provided by Giant Industries, Inc.
Liabilityunderthiswarrantyisonallnon-wearpartsandlimitedtothereplacementorrepairofthoseproductsreturned
freight prepaid to Giant Industries which are deemed to be defective due to workmanship or failure of material. A
Returned Goods Authorization (R.G.A.) number and completed warranty evaluation form is required prior to the
return to Giant Industries of all products under warranty consideration. Call (419)-531-4600 or fax (419)-531-6836
to obtain an R.G.A. number.
Repair or replacement of defective products as provided is the sole and exclusive remedy provided hereunder and
the MANUFACTURER SHALL NOT BE LIABLE FOR FURTHER LOSS, DAMAGES, OR EXPENSES, INCLUDING
INCIDENTAL AND CONSEQUENTIAL DAMAGES DIRECTLY OR INDIRECTLY ARISING FROM THE SALE OR
USE OF THIS PRODUCT.
THE LIMITED WARRANTY SET FORTH HEREIN IS IN LIEU OF ALL OTHER WARRANTIES OR REPRESENTA-
TION, EXPRESSORIMPLIED, INCLUDINGWITHOUTLIMITATIONANYWARRANTIESORMERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE AND ALL SUCH WARRANTIES ARE HEREBY DISCLAIMED AND
EXCLUDED BY THE MANUFACTURER.
GIANT INDUSTRIES, INC.
900 N. Westwood Ave.
P.O. Box 3187
Toledo, Ohio 43607
(419) 531-4600
FAX (419) 531-6836
3/07 GP8050,GP8060,GP8065.PMD
Copyright 2007 Giant Industries, Inc.
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