Jet Tools Drill JDP 20MF User Manual

Operating Instructions and Parts Manual  
Drill Press  
Model: JDP-20MF  
WMH TOOL GROUP  
2420 Vantage Drive  
Elgin, Illinois 60123  
Ph.: 800-274-6848  
Part No. M-354170  
Revision G 04/04  
Copyright © WMH Tool Group  
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Table of Contents  
Warranty........................................................................................................................................................2  
Table of Contents..........................................................................................................................................3  
Warnings .......................................................................................................................................................4  
Specifications................................................................................................................................................6  
Shipping Contents.........................................................................................................................................7  
Required Tools..............................................................................................................................................7  
Assembly.......................................................................................................................................................8  
Before Assembly .......................................................................................................................................8  
Column Assembly......................................................................................................................................8  
Table Bracket ............................................................................................................................................8  
Crank Handle.............................................................................................................................................9  
Column Lock Handle .................................................................................................................................9  
Table Installation .......................................................................................................................................9  
Head Assembly .......................................................................................................................................10  
Chuck and Arbor Installation ...................................................................................................................10  
Chuck and Arbor Removal ......................................................................................................................11  
Adjustment ..................................................................................................................................................11  
Depth Stop Adjustment............................................................................................................................11  
Changing Spindle Speeds.......................................................................................................................11  
Return Spring Adjustment .......................................................................................................................12  
Work Light ...............................................................................................................................................12  
Table Tilt Adjustment...............................................................................................................................12  
Operation.....................................................................................................................................................13  
Installing Drills .........................................................................................................................................13  
Positioning the Workpiece.......................................................................................................................13  
Using the Vise .........................................................................................................................................13  
Basic Operation.......................................................................................................................................13  
Maintenance................................................................................................................................................13  
Lubrication...................................................................................................................................................13  
Electrical......................................................................................................................................................13  
115 Volt Operation...................................................................................................................................13  
230 Volt Operation...................................................................................................................................13  
Grounding Instructions ............................................................................................................................14  
Extension Cords ......................................................................................................................................14  
Troubleshooting ..........................................................................................................................................15  
Replacement Parts..................................................................................................................................16  
Exploded View Drawing JDP-20MF ........................................................................................................17  
Parts List JDP-20MF ...............................................................................................................................18  
Wiring Diagram ...........................................................................................................................................21  
JDP-20MF Electrical Schematic – 115V .................................................................................................21  
JDP-20MF Electrical Schematic – 230V .................................................................................................21  
The specifications in this manual are given as general information and are not binding. WMH Tool Group  
reserves the right to effect, at any time and without prior notice, changes or alterations to parts, fittings,  
and accessory equipment deemed necessary for any reason whatsoever.  
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Warnings  
1. Read and understand the entire owners manual before attempting assembly or operation.  
2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with  
all of these warnings may cause serious injury.  
3. Replace the warning labels if they become obscured or removed.  
4. This drill press is designed and intended for use by properly trained and experienced personnel only.  
If you are not familiar with the proper and safe operation of a drill press, do not use until proper  
training and knowledge have been obtained.  
5. Do not use this drill press for other than its intended use. If used for other purposes, WMH Tool  
Group disclaims any real or implied warranty and holds itself harmless from any injury that may result  
from that use.  
6. Always wear approved safety glasses/face shields while using this drill press. Everyday eyeglasses  
only have impact resistant lenses; they are not safety glasses.  
7. Before operating this drill press, remove tie, rings, watches and other jewelry, and roll sleeves up past  
the elbows. Remove all loose clothing and confine long hair. Non-slip footwear or anti-skid floor strips  
are recommended. Do not wear gloves.  
8. Wear ear protectors (plugs or muffs) during extended periods of operation.  
9. Some dust created by power sanding, sawing, grinding, drilling and other construction activities  
contain chemicals known to cause cancer, birth defects or other reproductive harm. Some examples  
of these chemicals are:  
Lead from lead based paint.  
Crystalline silica from bricks, cement and other masonry products.  
Arsenic and chromium from chemically treated lumber.  
10. Your risk of exposure varies, depending on how often you do this type of work. To reduce your  
exposure to these chemicals, work in a well-ventilated area and work with approved safety  
equipment, such as face or dust masks that are specifically designed to filter out microscopic  
particles.  
11. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication.  
12. Make certain the switch is in the OFF position before connecting the machine to the power supply.  
13. Make certain the machine is properly grounded.  
14. Make all machine adjustments or maintenance with the machine unplugged from the power source.  
15. Remove adjusting keys and wrenches. Form a habit of checking to see that keys and adjusting  
wrenches are removed from the machine before turning it on.  
16. Keep safety guards in place at all times when the machine is in use. If removed for maintenance  
purposes, use extreme caution and replace the guards immediately.  
17. Make sure the drill press is firmly secured to the floor or bench before use.  
18. Check damaged parts. Before further use of the machine, a guard or other part that is damaged  
should be carefully checked to determine that it will operate properly and perform its intended  
function. Check for alignment of moving parts, binding of moving parts, breakage of parts, mounting  
and any other conditions that may affect its operation. A guard or other part that is damaged should  
be properly repaired or replaced.  
19. Provide for adequate space surrounding work area and non-glare, overhead lighting.  
20. Keep the floor around the machine clean and free of scrap material, oil and grease.  
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21. Keep visitors a safe distance from the work area. Keep children away.  
22. Make your workshop child proof with padlocks, master switches or by removing starter keys.  
23. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are  
careless acts that can result in serious injury.  
24. Maintain a balanced stance at all times so that you do not fall or lean against the spindle or other  
moving parts. Do not overreach or use excessive force to perform any machine operation.  
25. Use the right tool at the correct speed and feed rate. Do not force a tool or attachment to do a job for  
which it was not designed. The right tool will do the job better and safer.  
26. Use recommended accessories; improper accessories may be hazardous.  
27. Maintain tools with care. Keep drill bits sharp and clean for the best and safest performance. Follow  
instructions for lubricating and changing accessories.  
28. Make sure the work piece is securely attached or clamped to the table. Never use your hand to hold  
the work piece.  
29. Turn off the machine before cleaning. Use a brush or compressed air to remove chips or debris — do  
not use your hands.  
30. Do not stand on the machine. Serious injury could occur if the machine tips over.  
31. Never leave the machine running unattended. Turn the power off and do not leave the machine until it  
comes to a complete stop.  
32. Remove loose items and unnecessary work pieces from the area before starting the machine.  
Familiarize yourself with the following safety notices used in this manual:  
This means that if precautions are not heeded, it may result in minor injury and/or  
possible machine damage.  
This means that if precautions are not heeded, it may result in serious injury or possibly  
even death.  
- - SAVE THESE INSTRUCTIONS - -  
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Specifications  
Model Number................................................................................................................................JDP-20MF  
Stock Number .....................................................................................................................................354170  
Swing....................................................................................................................................................20-1/2”  
Type ........................................................................................................................................................Floor  
Drilling Capacity ...........................................................................................................................................1”  
Chuck Size................................................................................................................................................3/4”  
Spindle Travel ........................................................................................................................................4-5/8”  
Spindle Distance to Base.....................................................................................................................46-3/4”  
Spindle Distance to Table (max.).........................................................................................................29-1/8”  
Table Size (Length x Width)....................................................................................................... 18-1/2" x 16"  
Spindle Taper..........................................................................................................................................MT-3  
Column Diameter ...................................................................................................................................3-3/8”  
Number of Spindle Speeds ......................................................................................................................... 12  
Range of Spindle Speeds (RPM).................................................................................................150 – 4,200  
Base Size............................................................................................................................. 13-3/4” x 22-3/4”  
Overall Dimensions (H x W x D) ................................................................................66" x 18-1/2" x 31-1/2""  
Motor ....................................................................................1-1/2HP, 115/230V, 60Hz, 1Ph, Prewired 115V  
Net Weight (approx.).......................................................................................................................... 282 lbs.  
Gross Weight .................................................................................................................................... 293 lbs.  
Carton Size (L x W x H): ..........................................................................................................26" x 13" x 58"  
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Shipping Contents  
Unpack the carton and verify that all parts listed  
below are included.  
Other Material  
Main Parts  
1 ea  
1 ea  
Owner’s Manual  
Warranty Registration Card  
1 ea  
1 ea  
Head Assembly  
Table  
1 set Column and Table Bracket Assembly  
1 ea Base  
Required Tools  
1. 17mm Box Wrench or a 6” – 8” Adjustable  
Wrench  
Additional Parts  
1. 1 set Chuck and Chuck Key  
2. 15/16" wrench  
2. 1 pc  
3. 1 pc  
4. 1 pc  
5. 1 pc  
Arbor  
Drift Key  
Table Crank Handle  
Column Lock Handle  
6. 3 pcs Downfeed Handles and Knobs  
7. 1 pc 5/8"-11x2" Hex Cap Screw  
8. 1 set Locator Pin and Hex Nut  
9. 4 pcs M10 x 40 Hex Cap Screws  
10. 2 pc  
Hex Wrenches (3mm, 5mm)  
Additional Parts  
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Assembly  
Read and understand all  
assembly instructions before attempting  
assembly! Failure to comply may cause  
serious injury!  
Do not attempt to turn on  
power before this machine is completely  
assembled.  
Before Assembly  
1. Remove the contents from the shipping  
container.  
2. Compare the contents of the shipping  
container with the list on page 7. Report any  
shortages or damage to your JET distributor.  
Figure 1  
3. Clean all rust protected surfaces with  
kerosene or a light solvent. Do not use  
lacquer thinner, paint thinner, or gasoline.  
These will damage plastic components and  
painted surfaces.  
Column Assembly  
Referring to Figure 1:  
1. Place the base (A) on a level floor.  
2. Place the column assembly (B) on the base  
(A) and align the holes in the column support  
with the holes in the base.  
3. Using a 17mm wrench, secure the column (B)  
with four M10 x 40 hex cap screws (C) to the  
base.  
Figure 2  
Table Bracket  
When shipped, the rack ring and rack are bundled  
together with the column in plastic wrap.  
Referring to Figures 2 and 3:  
1. Remove the wrap and take the rack ring (D)  
and rack (B) off the column (C).  
2. Install the table bracket (A) together with the  
rack (B) on the column (C) as shown in  
Figure 2.  
3. Slide the rack ring (D) over the column (C),  
placing it so it rests against the rack (B) as  
shown in Figure 3 and tighten firmly with a  
3mm hex wrench (provided).  
Figure 3  
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Crank Handle  
Referring to Figure 4:  
1. Loosen the setscrew (B) on the table crank  
handle (A).  
2. Slide the handle (A) onto the table bracket  
shaft.  
3. Turn the handle until the setscrew is opposite  
the flat section on the shaft, and tighten the  
setscrew to secure the handle.  
Figure 4  
Column Lock Handle  
Referring to Figure 5:  
Thread the column lock handle (A) into the table  
bracket (B).  
Table Installation  
The table is heavy! This installation is a two  
person operation to avoid injury from  
accidental dropping.  
Referring to Figure 6:  
Figure 5  
1. Have one person hold the table (A) against  
the bracket (B), aligning the hole in the  
mounting plate of the table with the threaded  
hole in bracket.  
2. Have the second person insert the 5/8"-11x2  
hex head screw (C) through the opening on  
the bottom side of the table (A) and start  
threading the screw into the bracket by hand.  
3. Finish tightening the screw (C) with a 15/16"  
or wrench (wrench provided), but leave loose  
enough so the table can be tilted by hand.  
4. Using the scale on the bracket as a guide, set  
the table angle to 0 degrees (level).  
5. Take the locator pin (D) and adjust the hex  
nut towards the end of the thread as shown in  
the close up view (D).  
6. Insert the non-threaded end of the locator pin  
(D) into the hole on the table found just below  
the mounting screw. Press all the way in.  
Figure 6  
Note: The table may have to be tilted slightly  
back and forth if the holes do not quite align.  
7. Tighten the screw (C) with a 15/16" wrench.  
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Head Assembly  
Referring to Figure 7:  
1. With the aid of a second person, carefully lift  
the head onto the column top and slide it  
down into position  
The head assembly is heavy! Use care when  
lifting onto the column!  
2. Rotate head assembly until sides of the pulley  
cover are parallel with the sides of the base.  
3. Tighten two setscrews (A) with a 5mm hex  
wrench (provided) until they are snug.  
Figure 7  
4. Install three downfeed handles (B) into the  
downfeed hub (C).  
Chuck and Arbor Installation  
Referring to Figure 8:  
1. Raise table to approximately seven inches  
below spindle assembly, and lock the table in  
place.  
2. Place a piece of scrap wood (D) on the table.  
3. Thoroughly clean the internal and external  
taper of the arbor (A), and chuck (B) and  
spindle (C).  
Important: These three pieces must be free of  
any rust protection, or lubricant. If they are not  
clean, the arbor and chuck will fail to seat in the  
spindle.  
4. Place arbor (A) into the chuck (B).  
5. Twist the chuck to retract the chuck jaws if  
they are exposed.  
Figure 8  
6. Place arbor and chuck assembly into the  
spindle (C).  
7. Turn the arbor and chuck assembly until the  
tang on the arbor engages the slot at the end  
of the spindle.  
8. Lower the down feed handle (E) so that the  
chuck meets the scrap wood. Place  
downward pressure on the feed handle to  
seat the arbor and chuck into the spindle.  
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Chuck and Arbor Removal  
1. Unplug machine from the power source.  
2. Raise the table until it is about seven inches  
below the chuck.  
3. Place a piece of scrap wood on the table,  
and lower quill (A, Fig. 9) using the downfeed  
handle.  
4. Rotate spindle to align the keyhole in the  
spindle with the keyhole in the quill.  
5. Insert the drift key (B, Fig. 9) into the aligned  
slots and tap lightly. The chuck and arbor  
assembly should fall from the spindle.  
Figure 9  
Adjustment  
Depth Stop Adjustment  
To drill multiple holes at the same preset depth,  
use the depth stop:  
1. Use a pencil to mark the depth the bit will drill  
into the workpiece.  
2. With the drill bit in the chuck, lower downfeed  
handle to advance bit to your mark (A, Fig.  
10).  
3. With your other hand, advance the lock nuts  
(B, Fig. 10) on the depth stop rod until they  
are snug to the seat (C, Fig. 10).  
4. The drill bit will now advance to this point.  
5. To release, advance the nuts counter-  
clockwise to the top of the depth stop.  
Changing Spindle Speeds  
A spindle speed and pulley/belt arrangement chart  
is found on the inside of the pulley cover (D,  
Fig. 11), also shown in Figure 12. Refer to this  
chart whenever changing speeds.  
Figure 10  
8. To change spindle speeds:  
1. Unplug the machine from the power source.  
2. Loosen two bar knobs (E, Fig. 11) found on  
each side of the head assembly.  
3. Rotate the tension adjuster clockwise  
(F, Fig. 11) to bring the motor base as close  
to the head as possible.  
4. For desired speed, change the location of  
belts per pulley/belt arrangement chart.  
5. Rotate the tension adjuster counterclockwise  
(F. Fig. 11) to tension the belts.  
6. Tighten two bar knobs (E, Fig. 11). Belts are  
properly tensioned when finger and thumb  
pressure midway between the two pulleys  
causes approximately ½” deflection.  
Figure 11  
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Return Spring Adjustment  
The return spring is adjusted at the factory and  
should not need further adjustment. If adjustment  
is deemed necessary, follow the steps below  
while referring to Figure 12:  
1. Unplug the machine from the power source.  
2. Loosen two hex nuts (A). Do not remove.  
Do not remove the coil spring  
cover (Step 3). The torsion spring will uncoil  
and can cause serious injury.  
3. Firmly hold the coil spring cover (B).  
4. Pull out the cover and rotate until the pin (C)  
on the return spring plate engages the next  
notch in the coil spring cover. Turn the cover  
clockwise to decrease tension and counter-  
clockwise to increase tension.  
Figure 12  
5. Tighten two hex nuts (A). Do not over-tighten.  
Nuts should not contact the housing when  
tight. The hex nuts should be tightened  
against each other.  
Work Light  
Install a light bulb, no larger than 60 watts into the  
socket accessed from beneath the head. The  
rocker switch controls the light switch (D, Fig. 12).  
Table Tilt Adjustment  
To tilt the table (refer to Figures 13 and 14):  
In the following steps, DO NOT OVER  
LOOSEN. This could result in the table  
assembly to separate from the column, fall  
and cause injury.  
Figure 13  
1. Using a 15/16" wrench, loosen the hex cap  
screw (B), located under the table, about one  
turn.  
2. Pull the locator pin out.  
The pin may be seated quite tight; in which  
case turn the hex nut (B) clockwise with a  
3mm hex wrench to assist in extracting the  
pin  
Note: When the table is in any position other  
than level (0 degrees), the locator pin is not  
used.  
3. Tilt the table to the desired angle by aligning  
the scale (in degrees) on the table (C) to the  
marker at the base of the bracket (D).  
Figure 14  
4. Tighten the hex cap screw (A).  
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pulling out the plug or switching off the main  
switch! Failure to comply may cause serious  
injury.  
Operation  
Installing Drills  
A coat of automobile-type wax applied to the  
table and column will help to keep the surfaces  
clean.  
Insert the drill into the chuck jaws with about  
1" insertion. When using a small drill do not  
insert it so far that the jaws touch the flutes of  
the drill. Make sure that the drill is centered in  
the chuck before tightening the chuck with the  
key.  
If the power cord is worn, cut, or damaged in  
any way, have it replaced immediately.  
Lubrication  
All of the ball bearings are packed with grease at  
the factory. They require no further lubrication.  
Positioning the Workpiece  
Always place a piece of wood (or plywood) on  
the table. This will prevent "splintering" or  
making heavy burrs on the underside of the  
workpiece as the drill breaks through. The wood  
should contact the left side of the column.  
Periodically lubricate the gear, rack, table  
elevation mechanism, the splines (grooves) in  
the spindle, and the teeth of the quill with a #2  
tube grease.  
Using the Vise  
Electrical  
For the small workpiece that cannot be clamped  
to the table, use a drill press vise. The vise must  
be clamped or bolted to the table. Always use a  
back-up piece of scrap wood to cover the table.  
This protects both the table and the drill bit.  
115 Volt Operation  
Referring to Figure 15:  
As received from the factory, your drill press is  
ready to run at 115-volt operation. This drill  
press, when wired for 115 volt, is intended for  
use on a circuit that has an outlet and a plug that  
looks like the one illustrated in (A). A temporary  
adapter, which looks like the adapter shown in  
(B), may be used to connect this plug to a two-  
pole receptacle if a properly grounded outlet is  
not available. The temporary adapter should  
only be used until a properly grounded outlet  
can be installed by a qualified electrician. This  
adapter is not applicable in Canada. The green  
colored rigid ear, lug, or tab, extending from the  
adapter, must be connected to a permanent  
ground such as a properly grounded outlet box.  
Basic Operation  
Place material to be drilled in such as way as to  
come into contact with the left side of the  
column. This prevents the material from  
spinning.  
If the work piece is not large enough to come  
into contact with the column, use a clamp or  
drill press vise that is securely fastened to  
the table! Failure to comply may cause  
serious injury!  
Feed the bit into the material with only enough  
force to allow the drill bit to work. Feeding too  
slowly may cause burning of the workpiece.  
Feeding too quickly may cause the motor to stop  
and/or the drill bit to break.  
Generally speaking, the smaller the drill bit, the  
greater the RPM required. Wood requires higher  
speeds than metal. Metal is usually drilled at  
slower speeds.  
Figure 15  
230 Volt Operation  
Referring to Figure 16:  
In dusty environments, frequently blow out any  
dust that accumulates inside the motor.  
If 230V, single-phase operation is desired, the  
following instructions must be followed:  
Maintenance  
1. Disconnect the machine from the power  
source.  
2. The JET drill press motor has four  
numbered leads that are factory connected  
for 115V operation, as shown in (A). For  
Before any intervention on the machine,  
disconnect it from the electrical supply by  
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230V operation reconnect the leads as  
shown in (B).  
connect the equipment-grounding conductor to a  
live terminal.  
3. The 115V attachment plug (C), supplied with  
the drill press, must be replaced with a  
UL/CSA listed plug suitable for 230V  
operation (D). Contact your local Authorized  
JET Service Center or qualified electrician  
for proper procedures to install the plug.  
The drill press must comply with all local and  
national codes after the 230-volt plug is  
installed.  
Check with a qualified electrician or service  
personnel if the grounding instructions are not  
completely understood, or if in doubt as to  
whether the tool is properly grounded. Use only  
three wire extension cords that have three-prong  
grounding plugs and three-pole receptacles that  
accept the tool’s plug.  
Repair or replace a damaged or worn cord  
immediately.  
4. The drill press with a 230-volt plug should  
only be connected to an outlet having the  
same configuration as shown in (D). No  
adapter is available nor should be used with  
the 230-volt plug.  
Extension Cords  
Make sure your extension cord is in good  
condition. When using an extension cord, be  
sure to use one heavy enough to carry the  
current your machine will draw. An undersized  
cord will cause a drop in the line voltage  
resulting in power loss and overheating. The  
table following shows the correct size to use  
depending on the cord length and nameplate  
ampere rating. If in doubt, use the next heavier  
gauge.  
Remember, the smaller the gauge  
number, the heavier the cord.  
Length of  
AWG  
Cord  
0–25  
16  
14  
12  
Figure 16  
25-50  
51-100  
Grounding Instructions  
This tool must be grounded while in use to  
protect the operator from electric shock.  
The drill press with a 230-volt plug should only  
be connected to an outlet having the same  
configuration (D, Fig. 16). No adapter is  
available or should be used with the 230-volt  
plug.  
In the event of a malfunction or breakdown,  
grounding provides a path of least resistance for  
electric current to reduce the risk of electric  
shock. This tool is equipped with an electric  
cord having an equipment-grounding conductor  
and a grounding plug. The plug must be  
plugged into a matching outlet that is properly  
installed and grounded in accordance with all  
local codes and ordinances.  
Important: In all cases (115 or 230 volts), make  
certain the receptacle in question is properly  
grounded. If you are not sure, have a registered  
electrician check the receptacle.  
Do not modify the plug provided. If it will not fit  
the outlet, have the proper outlet installed by a  
qualified electrician.  
Improper connection of the equipment-  
grounding conductor can result in a risk of  
electric shock. The conductor, with insulation  
having an outer surface that is green with or  
without yellow stripes, is the equipment-  
grounding conductor. If repair or replacement of  
the electric cord or plug is necessary, do not  
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Troubleshooting  
Trouble  
Probable Cause  
Remedy  
Drill press unplugged from wall, or  
motor.  
Check all plug connections.  
Drill press will not  
start.  
Fuse blown, or circuit breaker tripped. Replace fuse, or reset circuit breaker.  
Cord damaged.  
Replace cord.  
Starting capacitor bad.  
Replace starting capacitor.  
Replace with adequate size and  
length cord.  
Extension cord too light or too long.  
Low current.  
Drill press does not  
come up to speed.  
Contact a qualified electrician.  
Adjust stand so that it rests evenly on  
the floor.  
Stand on uneven surface.  
Bad belt(s).  
Drill Press vibrates  
excessively.  
Replace belts.  
Adjust belt tension. See the  
Changing Spindle Speeds section.  
Incorrect belt tension.  
Lubricate spindle. See the  
Lubrication section.  
Dry spindle.  
Noisy Operation.  
Check tightness of retaining nut on  
pulley, and tighten if necessary.  
Loose spindle pulley.  
Loose motor pulley.  
Incorrect Speed.  
Tighten setscrews in pulleys.  
Change to appropriate speed; see the  
Changing Spindle Speeds section.  
Retract drill bit frequently to remove  
chips.  
Chips not clearing from hole or bit.  
Workpiece Burns.  
Drill bit wanders.  
Dull drill bit.  
Resharpen, or replace drill bit.  
Increase feed rate.  
Feeding too slowly.  
Bit sharpened incorrectly.  
Bent drill bit.  
Resharpen bit correctly.  
Replace drill bit.  
Bit, or chuck not installed properly.  
Reinstall the chuck, or bit properly.  
Wood splinters on the  
underside.  
Place a scrap board underneath the  
workpiece to prevent splintering.  
No backing board used.  
Workpiece pinching the bit.  
Excessive feed rate.  
Support or clamp workpiece.  
Decrease feed rate.  
Drill bit binds in  
workpiece.  
Chuck jaws not tight.  
Tighten chuck jaws.  
Adjust belt tension. See the Changing  
Spindle Speeds section.  
Improper belt tension.  
15  
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Troubleshooting (cont.)  
Trouble  
Probable Cause  
Remedy  
Bent drill bit.  
Replace drill bit.  
Excessive drill bit  
runout, or wobble.  
Worn spindle bearings.  
Bit, or chuck not properly installed.  
Replace spindle bearings.  
Reinstall the bit, or chuck properly.  
Quill returns too slow,  
or too fast.  
Adjust spring tension. See the Return  
Spring Adjustment section.  
Spring has improper tension.  
Chuck or arbor does  
not stay in place.  
Dirt, grease, etc on arbor, chuck, or  
spindle.  
Clean all mating surfaces thoroughly  
with a cleaner degreaser.  
Parts  
Replacement Parts  
Replacement parts are listed on the following pages. To order parts or reach our service department, call  
800-274-6848 between 7:00 a.m. and 6:00 p.m. (CST), Monday through Friday. Having the Model  
Number and Serial  
16  
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Exploded View Drawing JDP-20MF  
17  
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Parts List JDP-20MF  
Index No. Part No.  
Description  
Size  
Qty  
1 ...............11300117.................Base JDP-20MF................................................... .................................... 1  
.................11400401A1.............Column & Holder Assembly (Index 2A, 2B).........Ø85mm....................... 1  
2A.............JDP20-102A.............Column................................................................. .................................... 1  
2B.............JDP20-102B.............Holder................................................................... .................................... 1  
3 ...............TS-1525021 .............Socket Set Screw.................................................M10x12....................... 1  
4 ...............TS-1523041 .............Socket Set Screw.................................................M6x12......................... 1  
5 ...............TS-1492041 .............Hex Cap Screw....................................................M12x40....................... 4  
6 ...............11400607.................Bracket................................................................. .................................... 1  
7 ...............10600702.................Pinion Gear.......................................................... .................................... 1  
8 ...............10600802.................Gear Shaft............................................................ .................................... 1  
9 ...............10600902.................Worm Pinion......................................................... ......................................  
10A...........11501003.................Crank Handle....................................................... .................................... 1  
11 .............JDP20-111...............Pan Head Screw..................................................M5x6 ........................... 2  
13 .............TS-0071031 .............Hex Cap Screw....................................................5/8”-11x2” ................... 1  
14 .............10901402.................Locator Pin........................................................... .................................... 1  
15 .............TS-0561011 .............Hex Nut ................................................................1/4”-20......................... 1  
16 .............11401601.................Angle Scale.......................................................... .................................... 1  
17 .............10601702.................Centering Scale ................................................... .................................... 1  
18 .............2658MZDU36...........Drive Screw..........................................................Ø2.3x5 ........................ 8  
19 .............10601901.................Column Lock Handle............................................ .................................... 1  
21 .............11302119.................Work Table........................................................... .................................... 1  
22 .............11402207.................Rack..................................................................... .................................... 1  
23 .............11402311.................Rack Ring............................................................. .................................... 1  
24 .............TS-2276081 .............Socket Set Screw.................................................M6x8 ........................... 1  
25 .............11302522.................Head..................................................................... .................................... 1  
26 .............TS-1525021 .............Socket Set Screw.................................................M10x12....................... 2  
27 .............10602701.................Lamp Socket........................................................ .................................... 1  
28 .............TS-1534042 .............Pan Head Screw..................................................M6x12......................... 2  
29 .............11502901.................Handle Shifter ...................................................... .................................... 1  
30 .............10603002.................Cam...................................................................... .................................... 1  
31 .............TS-1490021 .............Hex Cap Screw....................................................M8x16......................... 1  
32 .............11503212.................Slide Bar (right).................................................... .................................... 1  
33 .............10903302.................Slide Bar Bolt .......................................................M10x40....................... 2  
34 .............11403437.................Motor Base........................................................... .................................... 1  
35 .............TS-0720111 .............Lock Washer........................................................1/2”.............................. 2  
36 .............TS-1540081 .............Hex Nut ................................................................M12............................. 2  
37 .............10603704.................Hub....................................................................... .................................... 1  
38 .............11303812.................Feed Shaft............................................................ .................................... 1  
39 .............2536MBE611 ...........Spring Pin.............................................................Ø5x16 ......................... 1  
43A...........10604303A1.............Handle Bar Assy .................................................. .................................... 3  
45 .............10661801.................Shaft Collar .......................................................... .................................... 1  
46 .............13105102.................Scale .................................................................... .................................... 1  
49 .............11404903A2.............Coil Spring & Cover ............................................. .................................... 1  
51 .............11305107.................Spring Seat .......................................................... .................................... 1  
53 .............TS-0561052 .............Hex Nut ................................................................1/2”-20 UNF.............. 12  
54 .............10605403.................Quill Set Screw .................................................... .................................... 1  
55 .............TS-1540071 .............Hex Nut ................................................................M10............................. 1  
56 .............11305616.................Quill...................................................................... .................................... 1  
57 .............11405704.................Rubber Washer.................................................... .................................... 1  
58 .............11305801.................Spindle ................................................................. .................................... 1  
59 .............BB-6206ZZ...............Ball Bearing..........................................................6206ZZ........................ 1  
60 .............2003A02906.............Thrust Bearing ..................................................... .................................... 1  
61 .............BB-6204Z.................Ball Bearing..........................................................6204Z.......................... 1  
62 .............11406202.................Washer................................................................. .................................... 1  
63 .............11406302.................Lock Nut............................................................... .................................... 1  
18  
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Index No. Part No.  
Description  
Size  
Qty  
64 .............11406403.................Spindle Nut........................................................... .................................... 1  
65 .............11406508.................Drive Sleeve......................................................... .................................... 1  
66 .............BB-6206Z.................Ball Bearing..........................................................6206Z......................... 2  
67 .............11406706.................Collar.................................................................... .................................... 1  
68 .............11406803.................Retaining Ring ..................................................... .................................... 2  
69 .............10606902.................Pulley Set Nut ...................................................... .................................... 1  
70 .............11407019.................Spindle Pulley ......................................................12S,A .......................... 1  
71 .............21015M3J40 ............Arbor ....................................................................MT3xJT4..................... 1  
72A...........561709.....................Chuck & Chuck Key............................................. .................................... 1  
73 .............10607303.................Wedge.................................................................. .................................... 1  
74 .............8211422651.............Motor.................................................................... .................................... 1  
75 .............C0014170122 ..........Motor Cable.......................................................... .................................... 1  
76 .............TS-1490041 .............Hex Cap Screw....................................................M8x25......................... 4  
77 .............TS-1550061 .............Flat Washer..........................................................M8............................... 4  
78 .............TS-1540061 .............Hex Nut ................................................................M8............................... 4  
79 .............11037972.................Motor Pulley.........................................................19mm.......................... 1  
80 .............2571MNC109...........Key.......................................................................5x6x27 ........................ 1  
81 .............TS-1524031 .............Socket Set Screw.................................................M8x12......................... 1  
83 .............10608301.................Wire Clip............................................................... .................................... 1  
84 .............TS-1533032 .............Pan Head Screw..................................................M5x10......................... 1  
85 .............2807AB08B3............Power Cord.......................................................... .................................... 1  
87 .............2850AG5A14 ...........Switch................................................................... .................................... 1  
88 .............11308801.................Switch Box ........................................................... .................................... 1  
89 .............TS-1534042 .............Pan Head Screw..................................................M6x12......................... 2  
90A...........11309014A1.............Pulley Cover Assembly........................................ .................................... 1  
92 .............TS-1534052 .............Pan Head Screw..................................................M6x16......................... 4  
95 .............11409511.................Center Pulley Assy............................................... .................................... 1  
96 .............BB-6202Z.................Ball Bearing..........................................................6202Z.......................... 2  
98 .............11409803.................Center Pulley Shaft.............................................. .................................... 1  
99 .............VB-A32.....................Belt.......................................................................A-32 ............................ 2  
101 ...........2501MNVN11 ..........Rubber Washer.................................................... .................................... 4  
121 ...........TS-2286302 .............Pan Head Screw..................................................M6x30......................... 2  
128 ...........2653MBDE15...........Tapping Screw.....................................................M4x20......................... 2  
129 ...........TS-1504051 .............Socket Head Cap Screw......................................M8x25......................... 1  
130 ...........TS-1504061 .............Socket Head Cap Screw......................................M8x30......................... 2  
137 ...........10308846.................Switch Cover........................................................ .................................... 1  
138 ...........TS-1533042 .............Pan Head Screw..................................................M5x12......................... 2  
139 ...........2852U55702 ............Bulb Switch .......................................................... .................................... 1  
140 ...........11514001.................Motor Bar (left)..................................................... .................................... 1  
147 ...........JDP20-1147.............Cover Edge Strip.................................................. .................................... 1  
149 ...........2536MBE619 ...........Spring Pin.............................................................Ø8x25 ......................... 2  
160 ...........11316902.................Nameplate............................................................ .................................... 1  
162 ...........10216210.................Warning Label...................................................... .................................... 1  
163 ...........JDP20-1163.............Motor Label.......................................................... .................................... 1  
165 ...........11316501.................Speed Chart......................................................... .................................... 1  
601 ...........TS-1533032 .............Pan Head Screw..................................................M5x10......................... 2  
602 ...........TS-0733041 .............Lock Washer External Tooth................................1/4".............................. 2  
605 ...........2536MBE623 ...........Spring Pin.............................................................Ø6x16 ......................... 1  
606 ...........2536MBE625 ...........Spring Pin.............................................................Ø2.5x10 ...................... 1  
607 ...........TS-0720091 .............Lock Washer........................................................3/8”.............................. 2  
610 ...........TS-2286202 .............Pan Head Screw..................................................M6x20......................... 2  
611 ...........11361101.................Seat...................................................................... .................................... 1  
612 ...........TS-1540071 .............Hex Nut ................................................................M10............................. 1  
613 ...........11361301.................Scale Bolt............................................................. .................................... 1  
614 ...........13005701.................Nut........................................................................M16-2.0P .................... 2  
615 ...........13005601.................Washer................................................................. .................................... 1  
616 ...........TS-1504051 .............Socket Head Cap Screw......................................M8x25......................... 1  
617 ...........11361701.................Set Ring ............................................................... .................................... 1  
19  
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Index No. Part No.  
Description  
Size  
Qty  
618 ...........10604505.................Round Nut............................................................ .................................... 1  
619 ...........TS-0720091 .............Lock Washer........................................................3/8”.............................. 1  
700 ...........TS-152704 ...............Hex Wrench .........................................................3mm............................ 1  
701 ...........TS-152706 ...............Hex Wrench .........................................................5mm............................ 1  
801 ...........28065558B3.............Bulb Wire.............................................................. .................................... 1  
805 ...........10280501.................Bulb Sticker.......................................................... .................................... 1  
903 ...........2801ABRF04 ...........Strain Relief.......................................................... .................................... 2  
817 ...........28065558B3.............Bulb Wire.............................................................. .................................... 1  
904 ...........JDP20-1904.............Strain Relief.......................................................... .................................... 1  
20  
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Wiring Diagram  
JDP-20MF Electrical Schematic – 115V  
STARTING CAPACITOR  
400MFD 125 VAC  
ON / OFF SWITCH  
BLACK  
WHITE  
3
BLACK  
WHITE  
2
1
4
GREEN  
GREEN  
GROUND  
LAMP SWITCH  
BLACK  
WHITE  
BLACK  
BLACK  
LAMP  
JDP-20MF Electrical Schematic – 230V  
STARTING CAPACITOR  
400MFD 125 VAC  
ON / OFF SWITCH  
3
2
BLACK  
WHITE  
BLACK  
WHITE  
1
4
GREEN  
GREEN  
GROUND  
LAMP SWITCH  
BLACK  
WHITE  
BLACK  
BLACK  
LAMP  
21  
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NOTES  
22  
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NOTES  
23  
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WMH Tool Group  
2420 Vantage Drive  
Elgin, Illinois 60123  
Phone: 800-274-6848  
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