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DeWALT DC940 Type 1 Drill / Driver

DeWALT DC940 Type 1 Drill / Driver Parts

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We Sell Only Genuine DeWALT ® Parts.

DeWALT DC940 Type 1 Drill / Driver

DeWALT DC940 Type 1 Drill / Driver Parts

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 Fig #
1
Clamshell Set
 $13.49
Part Number: 629820-00
In Stock, 1 Available
Ships within 1 business day

2
End Cap
 $6.15
Part Number: 629823-00
In Stock, 8 Available
Ships within 1 business day

3
Bit Clip
 $2.99
Part Number: 148354-03
In Stock, 10 Available
Ships within 1 business day

4
Dewalt Logo Label
 $3.99
Part Number: 395657-00
In Stock, 5 Available
Ships within 1 business day

5
Fwd/Rev Button
 
No Longer Available [ More Info ]
Part Number: 633327-02
Discontinued
Not Available


6
VSR Switch
 $79.73
Part Number: 152274-25SV
In Stock, 1 Available
Ships within 1 business day

Note: Use Actuator 628741-00
7
Adapter Plate
 $3.99
Part Number: 629172-00
In Stock, 1 Available
Ships within 1 business day

8
Screw,Taptite
 $1.99
Part Number: 156179-01
In Stock, 3 Available
Ships within 1 business day

9
Motor and Pinion
 $57.56
Part Number: 629151-00SV
Ships In 13 - 19 Business Days
Ships in 13 - 19 business days

10
Torx Screw
 $1.99
Part Number: 682211-00
In Stock, 19 Available
Ships within 1 business day

Note: M3 X 16mm T10
11
Transmission
 $51.70
Part Number: 613237-00SV
In Stock, 6 Available
Ships within 1 business day

12
Keyless Chuck
 $31.75
Part Number: N196034
Ships In 13 - 19 Business Days
Ships in 13 - 19 business days

Note: Jacobs 4000 Non-Carb
13
Screw,Thd.Form
 $1.99
Part Number: 330019-62
In Stock, 6 Available
Ships within 1 business day

14
Lead Wire Assembly.
 $3.99
Part Number: 631282-01
In Stock, 4 Available
Ships within 1 business day

15
Lead Wire Assembly.
 $3.99
Part Number: 631283-01
In Stock, 3 Available
Ships within 1 business day

16
Motor Lead Wire Guide
 $2.99
Part Number: 636634-00
Ships In 13 - 19 Business Days
Ships in 13 - 19 business days

17
Nameplate
 $1.56
Part Number: N009873
Ships In 13 - 19 Business Days
Ships in 13 - 19 business days

18
Brush Box
 $7.80
Part Number: 603754-01
In Stock, 25+ Available
Ships within 1 business day

Note: Only Used on Original Non-Sealed Motor.
19
Reverse Thread Chuck Screw
 $2.99
Part Number: 605256-01
In Stock, 25+ Available
Ships within 1 business day

Note: Lh
20
Instruction Label
 $3.99
Part Number: 640421-00
Ships In 13 - 19 Business Days
Ships in 13 - 19 business days

21
Screw,Base
 $2.99
Part Number: 330019-00
In Stock, 11 Available
Ships within 1 business day

Note: M3.12 X 16mm T10
24
Cap
 $4.47
Part Number: 609133-00
Ships In 13 - 19 Business Days
Ships in 13 - 19 business days

25
Adj. Collar
 $7.40
Part Number: 629462-00
In Stock, 1 Available
Ships within 1 business day

26
Detent Spring
 $3.99
Part Number: 395460-00
Ships In 13 - 19 Business Days
Ships in 13 - 19 business days

27
Gearcase and Spindle
 $13.95
Part Number: 647170-00
In Stock, 2 Available
Ships within 1 business day

28
Spindle Assembly
 $22.69
Part Number: 397875-00SV
In Stock, 6 Available
Ships within 1 business day

35
Gear and Spindle
 $127.19
Part Number: 638581-00SV
Ships In 13 - 19 Business Days
Ships in 13 - 19 business days

36
Side Handle
 $6.08
Part Number: 646594-00
In Stock, 6 Available
Ships within 1 business day

Note: Not Supplied
856
Screwdriver Bit
 $2.99
Part Number: 607918-41
In Stock, 11 Available
Ships within 1 business day

Note: P#2/S#8
861
Kitbox
 $34.99
Part Number: 660141-00
In Stock, 1 Available
Ships within 1 business day

Note: Dc056 Kitbox (Optionl)
867
Battery Cap
 $1.99
Part Number: 645221-00
In Stock, 25+ Available
Ships within 1 business day

Note: Not Included W/Unit
871
DeWALT 7.2V - 18V Charger
 $112.48
Part Number: 388683-12
In Stock, 3 Available
Ships within 1 business day

Note: Acc. Dw9107
Drill Parts  Cordless Drill Parts
Repair Guides
Power Tool Care and Maintenance 101
Power Tool Care and Maintenance 101

This article suggests guidelines for power tool care and maintenance. It also describes information tools available at eReplacementParts.com.

How to Remove a Drill Chuck

This video explains steps for how to remove threaded-on chucks and taper-fit drill chucks, as well as steps for removing a spindle from an open-center chuck.

Removing And Replacing DeWALT Drill Transmissions

This video explains how to carefully remove the transmissions of DeWALT drills and drivers, and how to replace them again.

Cordless Drills 101
Cordless Drills 101

This article explains the types, features, and terms necessary for purchasing a cordless power drill. It also describes types of drill batteries and offers a purchasing guide.

Questions & Answers

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Discussion
Discussion for the DeWALT DC940 Type 1 Drill / Driver

Discussion is closed. To ask our experts a question about a part, use the Q&A feature on our product pages.
Question: Dewalt Dc940 Repair

jordan

Hi I am working on a dewalt 12v xrp drill/driver. It has poor performance and burning odor along with some smoke. Near the brushes/armature I can see what looks like ignition/sparks and after taking off the rear cap the end is very hot. The brushes look to be in poor condition and possibly the armature where it contacts the brushes as well. I was wondering how to remove the brush and holder assembly from the motor and pinion assembly. Any help will be greatly appreciated. Thanks. Jordan.
Hi Jordan, The tool uses what called a brush cartridge which you gently pry out of the housing as an assembly.Hope that helps.
Tinker
Thank You very much! That helps. I got them out and cleaned them and the commutator. There was significant build up around the brushes and in the commutator grooves. Looks like grease getting in from the transmission area. I did some more tinkering and found that the commutator gets red hot instantly where the brushes make contact. The brushes are beveled, angled long-ways(shorter to the rear), almost like the armature is out of round, and somewhat scored. This doesn't seem normal but I thought I would ask. I ordered 2 brush assemblies but I am beginning to think I need a motor and pinion assembly because the contact area is worn down nearly 1/16" from the rest of the armature. Do you think I need a new motor and pinion assembly? On first thought I was thinking "Too much votage getting to the brushes!" But mabeye it is because they are not making good contact. Again thanks for the help so far but can you help me again? Jordan.
Hi Jordan,Yes replace the whole motor assembly.We use a load tester to check that out but 80% of the time the armature is shorted.The grease that your talking about is molly grease from the transmission and your right it leaks out some times.Good luck.
Tinker
Thanks a lot. I will try it when i get the parts in. If it still gets red hot I would have to guess the swith is bad. In the mean time, I will try and hotwire the motor with brushes attatched and installed in the drill with the transmission off.(unless that is a bad idea). I sure hope you are around in the future to help. Thanks.
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