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Repair Parts Home    Power Tool Parts    DeWALT Parts    DeWALT Hammer Drill Parts    DeWALT DW988 TYPE 1 Cordless Hammer Drill Parts
DeWALT DW988 TYPE 1 Cordless Hammer Drill dewalt logo

 DeWALT DW988 TYPE 1 Cordless Hammer Drill Parts

Page A

 Fig # Part # Img Part Name Availability Price Qty
1622858-02
Clamshell
In stock
8 available
$21.18
2620747-00
End Cap
In stock
5 available
$4.56
3148354-03
Bit Clip
In stock
22 available
$1.12
4607918-41
Screwdriver Bit
In stock
12 available
$0.95
5615864-00
Nameplate
Note: DW988 TYPE 1
In stock
4 available
$1.09
6634728-00
Forward/Reverse Button ( Fits the Marquette Switch)
In stock
6 available
$1.30
7152274-19SV
Switch, V.S.R.
Note: Use actuator 611411-01
In stock
25+ available
$67.08
8626494-00
Motor Adaptor
In stock
6 available
$1.50
9396505-22SV
Motor and Pinion
In stock
19 available
$47.30
10682211-00
Torx Screw
In stock
20 available
$1.12
11397892-05SV
Transmission
In stock
8 available
$50.27
12608060-00
Detent Shifter
In stock
2 available
$1.87
13330075-45
Keyless Chuck
In stock
5 available
$60.84
14395657-00
Dewalt Logo Label
In stock
17 available
$1.12
15399102-01SV
Gear Case Assembly
Note: Includes Figure 18
In stock
2 available
$69.39
Fig #Part #ImgPart NameAvailabilityPrice
16330019-49
Screw,Plastic
In stock
9 available
$1.12
17605256-01
Screw (Reverse Thread)
Note: Torx T20 Head
In stock
25+ available
$1.12
18399059-00
Cam Return Spring
Note: Included In Figure 15
In stock
4 available
$8.49
19603529-00
MTR LWire Guide
In stock
2 available
$1.87
20398978-00
Lead Wire
In stock
5 available
$1.87
21398979-01
Lead Wire Assembly
In stock
5 available
$1.13
22603754-01
Brush Box (Sold Individually)
Note: Sold individually
In stock
25+ available
$6.56
23939794-00
Handle Assembly
In stock
7 available
$16.95
26330019-00
Screw,Base
In stock
14 available
$1.12
28611904-00SV
Spindle
In stock
1 available
$38.48
861660141-00
Kitbox
In stock
2 available
$32.03
866A651034-01
DeWALT 18V Ni-Cd XR Power Tool Battery
In stock
2 available
$142.96
866B389795-23
Dewalt 18 Volt Battery (XRP, Ni-Cd)
In stock
2 available
$180.99
867645221-00
Battery Cap
In stock
13 available
$1.05
871B388683-12
DeWALT 7.2V - 18V Charger
In stock
2 available
$94.64
Fig #Part #ImgPart NameAvailabilityPrice

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Drill Parts  Hammer Drill Parts

Repair Articles

How to Remove a Stuck Drill Chuck
How to Remove a Stuck Drill Chuck

Broken gearboxes and sticky chuck screws can make removing a drill chuck difficult. This article explains the tricks you need to overcome these common repair setbacks.
Drilling, Fastening, and Hammering Power Tools
Drilling, Fastening, and Hammering Power Tools

This article lists the major categories of drilling, fastening, and hammering tools, and explains the basic applications, types, and features of each.
Removing And Replacing DeWALT Drill Transmissions
Removing And Replacing DeWALT Drill Transmissions

This article explains how to carefully remove the transmissions of DeWALT drills and drivers, and how to replace them again.
How to Remove a Drill Chuck
How to Remove a Drill Chuck

This article 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.
Repair Stories
Symptom:
No Power
Parts Used:
Part Number:
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Entry Date:2013-12-05 16:57:02
2 of 3 customers found these instructions helpful
Brushes wore out resulting in burned out motor.
Just follow the guide sent with the new motor. Fairly easy repair.
Be sure to keep the existing black plastic wire mount that holds the
connecting wires in place to the motor / brushes.
Did these repair instructions help you?
Symptom:
Housing Broken
Parts Used:
Part Number:
Repair Difficulty:
Medium
Time Spent Repairing:
30-60 minutes
Tools Used:
Entry Date:2013-12-13 11:19:53
1 of 2 customers found these instructions helpful
The entire case needed replaced they don't do well being dropped off a two story roof and landing onto the concrete floor.
Its a fairly simple process after I watched the video on how to replace the transmission. my recommendation is to first watch the video how to replace the transmission. That is the key. - http://www.ereplacementparts.com/article/1020/Removing_And_Replacing_DeWALT_Drill_Transmissions.html
Did these repair instructions help you?
Discussion
Discussion for the DeWALT DW988 TYPE 1 Cordless Hammer Drill

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1139093
Question: Installation

1139093

install the clam shell
pdemeno1
Question: DeWalt DW988 Cordless Drill

pdemeno1

I pull the trigger and get no respondes, my battery is fully charged. My DW988 can you suggest what could be my problem I have login in
WJA
Reply: DeWalt DW988 Cordless Drill

WJA

Hello pdemeno1,

My first guess would be that you switch, part number 152274-19SV is defective. We have prepared an article and video to assist you in checking your switch. The article refers to a corded tool, but it should give you an idea on how to check your cordless switch. Here is the link to it.

How to Diagnose a Bad Switch or Cord.

Disregard the part about the cord.

Hope this helps,
-WJA
I just replaced the brushes in my DeWalt DW988. Do they need to be broken in? If so, for how long, or how to do it?
Tinkerdave
Reply: New Brushes - Do They Need To Be...

Tinkerdave

Hi mdenegre,
No they don't need to be broken in.Just as long as your armature is in good working order just install them and that should be it.Hope that helps.Good luck.
Tinker
David
Question: Stuck On Hammer

David

I have a DW988 and can't rotate off of hammer to drill or any of the numbered settings for preventing too much torque. Is it the transmission or the gear case?
Al Mc
Question: Switch VSR.

Al Mc

I have A dw988 hammer drill. I get an ohm reading from the battery connection to the brushes whether I press the trigger or not but I cant get the power through. I feel it has to be the switch because that is the only thing between the battery & the brushes. I can figure AC but I have a problem trouble shooting DC. Can any one help??? Thanks Al
jay
Question: Were To Return This Part

jay

I can not figure out where this small part goes back? The small part is the one above #28 on its right side?
ROB
Question: DW988 DEWALT KEY CHUCK

ROB

I have taken the screw out but the chuck wont budge. There is a star pattern inside the chuck. I've tried to unscrew it but it won't move either way. I have tried to pull it out but it won't move. I'm thing about heating it up? Help please. Thanks Rob.
norris12545
Reply: DW988 DEWALT KEY CHUCK

norris12545

how do you get the chuck off once the screw is out
Tinkerdave
Reply: DW988 DEWALT KEY CHUCK

Tinkerdave

Hi Rob,Well that the million dollar questions.Both Dewalt and Ereplacementparts have instructions and video's on how to remove chucks. I never had much luck removing a chuck buy tightening a allen wrench in the chuck and then hitting it smartly with a hammer. We remove and replace a lot of chucks in our shop and we have a 1/2" socket adapter that we clamp into the chuck and then put a 1/2" impact on it to take it off.That works most of the time unless the chuck is broken. If the chuck is broken we take a 1/2" screw extractor and hammer it tightly in the nose and use a square drive scoket on the impact to remove it.
Now if that doesn't work we clamp the chuck and drill in a vise and take a high speed cut off wheel and split the chuck like a banana then take a air chisel stick the bit in the cut and open it enough to screw off the chuck.
If that won't work then Ive been known to take the drill out side and throw it up on the roof.
So what I'm trying to say is all chuck are different,some are easy and other are almost impossible to get off. I don't know if this helps but its a place to start.Good luck
Tinker
dan
Question: Keyless Chuck

dan

Is there an easy way to remove the keyless chuck? I thought it simply unscrewed but I can't get it to budge.
Courtney W
Reply: Keyless Chuck

Courtney W

Turn the chuck all the way open and look inside where the drill bit inserts. There should be a Torx head screw you need to remove. Be very careful because this screw has reverse threads and also lock tite on the threads. It may require a quality torx bit to get it popped loose. Do not forget the reverse threads. Turn the screw clockwise to loosen the torx screw. Hope this helps, Courtney W.
djabel422
Question: DeWalt DW988 18V: Fried Motor?

djabel422

As mentioned in the title, DW988 18V 3 speed hammer drill. I put a battery in it and when I squeezed the trigger sparks came out of the vent holes and then smoke.

I immediately stopped and removed the battery. The drill did turn and work, but there was obviously a problem.

Is this the sign of a fried motor or do I only need new brushes?

Thanks in advance.
emo325
Reply: DeWalt DW988 18V: Fried Motor?

emo325

hello! start by checking the brush and holder assembly check the connection lead at the brush holder these types have a tendency to burn out the connector tab on the brush holder. if all those parts are good then i'm sad to say yo need a new motor. good luck!
brando21689
Question: Cordless Drill Transmission

brando21689

I am trying to reassemble the transmission in a DW988 cordless drill and I need some help. I need a diagram or some sort of schematic to go off of. If anyone has any information that could help it would be much appreciated. Thank you. My email is link removed
cmoorejack
Reply: Cordless Drill Transmission

cmoorejack

Hey brando,
Not a diagram or schematic that I am aware of..[I tried to get a Dewalt service center to help me reassemble a transmission once..they gave me a wink,wink..and a head nod...and sold me a new one..]
I was able to reassemble one at a later date..but it is just a trial and error method..not one for the faint of heart..:)
Part # 397892-05 avail at ereplacementparts.com
hope this helps..?
Craig
Caseys
Question: DW988 "Ratcheting"

Caseys

I have a mdel DW988, I replaced the front gear box and it still "ratchets" like it is set on #1, spped does not seem to matter, it does it on all 3 speeds...Any ideas ?
Caseys
Reply: DW988 "Ratcheting"

Caseys

I have a mdel DW988, I replaced the front gear box and it still "ratchets" like it is set on #1, spped does not seem to matter, it does it on all 3 speeds...Any ideas ?
cmoorejack
Reply: DW988 "Ratcheting"

cmoorejack

Hey caseys,
usually it is the transmission that is bad [slipping] and not the gearbox..[it may seem like the gearbox..!] sorry but you will have to change out the transmission to repair you problem..
Hope this has been helpful..
Craig
Geneva Tool Repair
cmoorejack
Reply: DW988 "Ratcheting"

cmoorejack

Hey caseys,
usually it is the transmission that is bad [slipping] and not the gearbox..[it may seem like the gearbox..!] sorry but you will have to change out the transmission to repair you problem..
Hope this has been helpful..
Craig
Geneva Tool Repair
Caseys
Reply: DW988 "Ratcheting"

Caseys

Chuck, I replaced the transmission, ( inexpensive part ) and the drill now works fine at all levels

THANK YOU
Caseys
Reply: DW988 "Ratcheting"

Caseys

Chuck, I replaced the transmission, ( inexpensive part ) and the drill now works fine at all levels

THANK YOU
esteban@mata
Question: DW988 Transmission Diagram

esteban@mata

:confused Need gear assembly diagram for transmision,tanks
Mike
Reply: DW988 Transmission Diagram

Mike

Are you trying to reassemble a cordless drill transmission? Once those things come apart it's interesting to get them back together. :) Still, I'll see what I can find for you.
Dave
Reply: DW988 Transmission Diagram

Dave

On these cordless drills, it can be tough to get a parts breakdown for the transmission itself. The reason is that most manufacturers usually offer the transmission as a whole part (see figure 11 on the diagram - the link to the diagram is at the bottom of this page).

The individual pieces inside the transmission are not available for purchase. The price on the transmission is not too bad however, it is about $39.00. In many cases it will be worth it to buy a new transmission to fix the drill. The transmission can be found here:

397892-05 Transmission - $39.95

Hope this helps.
vernarooskie
Question: DeWalt Cordless Drills

vernarooskie

Is it just me or does DeWalt have a bunch of sorry products (cordless Drills). The forums I read is full of problems....I've e-mailed DeWalt several times regarding my drills....they don't even respond. I have a DC920....I've had to replace the switch...now the chuck "dogs" are not even with each other. I'm working on that problem....looks like I might be able to fix. My son gave me complete kit....Hammer drill, circular saw, recept saw, etc. The hammer drill, DW988, throwing sparks and smoke from the brush end...pulled out the brush holder, cleaned up everything....no link removed will have to replace motor......I really think DeWalt has chuck and VSR trigger problems and they won't back up their product. I'll think twice next time......vernarooskie
Mike
Reply: DeWalt Cordless Drills

Mike

For sure, every brand has its gremlins. Personally I haven't heard of more problems with Dewalt cordless tools over other brands. Over time any switch will wear out, but as for the motor, I do hear of a lot of people overworking their cordless drills (mixing mud, running 3" hole saws etc) which can cause a lot of problems. That may or may not have happened here. Of course Dewalt doesn't make their cordless drill chucks, but if I remember correctly that Jacobs chuck on the DW988 wasn't the best. Their new Rohm chuck is pretty impressive though.
Accessories
Accessories for the DW988

Hole Saws:
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49-56-0193
3-1/2" Hole Saw - 5/8"-18 Thread
$17.72

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2" Hole Saw - 5/8"-18 Thread
$13.18

49-56-0062
1-1/4" Hole Saw - 5/8"-18 Thread
$12.18

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