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Repair Parts Home    Power Tool Parts    Milwaukee Parts    Milwaukee Hammer Drill Parts    Milwaukee 5378-20 (SER 897A) 1/2" Electric Hammer Drill Parts
Milwaukee 5378-20 (SER 897A) 1/2 milwaukee logo

 Milwaukee 5378-20 (SER 897A) 1/2" Electric Hammer Drill Parts

Page A

 Fig # Part # Img Part Name Availability Price Qty
422-64-0515
Cord Set
In stock
3 available
 $13.34
510-07-5378
Product Label Obsolete - Not Available
Discontinued
$0.00N/A
744-76-0290
Strain Relief
In stock
4 available
 $0.92
10014-38-0445
Housing Assembly
In stock
2 available
 $20.48
10144-52-0585
Handle Cushion
In stock
3 available
 $2.28
10245-30-0055
Retaining Slug
Ships in 9 - 15 business days
 $0.98
10345-30-0195
Retaining Slug
Ships in 9 - 15 business days
 $0.68
10405-78-0715
Screw
In stock
4 available
 $0.68
10518-07-0150
Field
In stock
1 available
 $26.72
10614-46-1240
Armature and Field Kit
Note: Includes Figures 107-111
In stock
2 available
 $87.89
10722-84-0930
Fan
Note: Included In Figure 106
Ships in 9 - 15 business days
 $1.20
10802-04-1825
Ball Bearing
Note: Included In Figure 106
Ships in 9 - 15 business days
 $4.23
10902-04-1820
Ball Bearing
Note: Included In Figure 106
In stock
3 available
 $6.98
11042-40-1045
Bushing
Note: Included In Figure 106
In stock
2 available
 $3.15
11142-92-0070
Bearing Cover
Note: Included In Figure 106
Ships in 9 - 15 business days
 $1.03
Fig #Part #ImgPart NameAvailabilityPrice
11223-94-1045
Wire
In stock
2 available
 $0.68
11323-94-1050
Wire
In stock
2 available
 $0.68
11422-22-0885
Brush Assembly - Lower
In stock
10 available
 $11.90
11522-22-0890
Brush Assembly - Upper
In stock
9 available
 $6.98
11622-20-0225
Brush Holder
In stock
8 available
 $0.68
11731-17-0240
Cord Clamp
In stock
2 available
 $0.68
11823-94-1055
Wire
In stock
2 available
 $0.68
11923-94-1060
Wire
Ships in 9 - 15 business days
 $0.68
12006-82-9640
Screw
In stock
2 available
 $0.68
12105-78-0720
Screw
In stock
2 available
 $0.68
12205-81-0932
Screw
Ships in 9 - 15 business days
 $0.68
12305-81-0960
Screw
In stock
2 available
 $0.68
12445-22-0550
Rubber Sleeve
Ships in 9 - 15 business days
 $0.68
13523-66-1692
Switch
In stock
7 available
 $20.55
13744-10-0065
Switch Lever
In stock
2 available
 $6.86
Fig #Part #ImgPart NameAvailabilityPrice
20245-88-8295
Washer
In stock
2 available
 $0.68
20340-50-8890
Spring
In stock
2 available
 $0.68
20402-04-1830
Ball Bearing
In stock
2 available
 $7.21
20544-84-0295
Ratchet
Ships in 9 - 15 business days
 $2.36
20644-90-0004
Seal Ring
In stock
2 available
 $2.36
20744-90-0365
Snap Ring
In stock
2 available
 $0.81
20845-88-1300
Washer
In stock
2 available
 $0.68
20932-75-1220
Spindle Gear
Ships in 9 - 15 business days
 $12.99
21044-90-4505
Shift Ring
Ships in 9 - 15 business days
 $15.63
21245-88-8335
Thrust Washer
In stock
2 available
 $0.68
21344-60-1490
Pin
In stock
2 available
 $0.68
21444-10-0095
Shift Lever
Ships in 9 - 15 business days
 $1.84
21540-50-8355
Retaining Spring
Ships in 9 - 15 business days
 $0.68
21642-70-0790
Shifting Clip
In stock
2 available
 $1.49
21744-60-1470
Pin
Ships in 9 - 15 business days
 $0.81
Fig #Part #ImgPart NameAvailabilityPrice
21845-88-8345
Thrust Washer
In stock
2 available
 $0.68
21944-10-0105
Shift Lever
Ships in 9 - 15 business days
 $3.55
22044-60-1500
Pin
In stock
2 available
 $0.68
22114-46-5378
Reduction Gear/Spindle Gear Kit
Ships in 9 - 15 business days
 $43.44
22244-60-1475
Pin
In stock
2 available
 $0.68
22302-02-0110
Ball
In stock
2 available
 $0.68
22402-02-0115
Ball
In stock
2 available
 $0.68
22502-02-0125
Ball
In stock
2 available
 $0.68
22602-02-0105
Ball
In stock
2 available
 $0.68
22743-44-0345
Gasket
In stock
2 available
 $0.81
42031-40-0020
Gearcase
Ships in 9 - 15 business days
 $29.87
42338-50-0042
Spindle
In stock
2 available
 $17.05
42526-28-1865
Diaphragm
Ships in 9 - 15 business days
 $34.05
49114-20-5378
Reverse Module
Note: Variable Speed Switch
In stock
2 available
 $29.94
80005-80-0430
Chuck Retaining Screw
In stock
11 available
 $3.20
Fig #Part #ImgPart NameAvailabilityPrice
80148-66-5185
Chuck
In stock
11 available
 $32.05
80231-05-5265
Side Handle
Ships in 9 - 15 business days
 $12.02
80310-15-0270
Warning Label Obsolete - Not Available
Discontinued
$0.00N/A

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Discussion
Discussion for the Milwaukee 5378-20 (SER 897A) 1/2" Electric Hammer Drill

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  • Subject:
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  • Comment:
  •  
My new 23-66-1692 switch has completely different terminals than the origional switch. Any diagrams available for the new switch? Wiring Instruction bulletin 58-01-1150 is not similar to my new switch. 8 wires and no instructions.
WJA
Reply: Milwaukee Drilll 5378-20 Switch ...

WJA

Hello 105691,

See if this wiring diagram will help. Here is a link to it link removed 5378-20 Wiring diagram

Hope this helps,
-WJA
Does anyone know how to separate the two halves of the red plastic handle on a Milwaukee hammer drill [5378-20]? I've removed all screws and searched for hidden pins and springs to no avail. I am hesitant to force the handle apart because the material, though flexible, seems a bit fragile.
Thanks lots.
Ken
Tinkerdave
Reply: Replacing Brushes 5378-20 Milwau...

Tinkerdave

Hi jcobb,

The back handle cushion has to come off .Also the 4 long screws that hold the front drive unit have to come out and the drive unit moved slightly forward for the two half to separate. Hope this helps.Good luck.
Tinker
jcobb
Reply: Replacing Brushes 5378-20 Milwau...

jcobb

Hello Tinkerdave,

Thanks for the information. I had removed the four long screws that hold the front parts to the red handle. Also, I removed the black rubbery grip. I am only able to move the medial section about 1/8"-3/16" forward, but still the red handles seem inseparably bonded to each other and maybe internal parts. It's a real puzzle--looks like it oughta come apart.

Thanks again for your reply and info.

Jcobb
How does the red plastic case separate. I'v removed all the screws, right side and front. Also rubber grip. Won't budge. Can't find any detents or clips. Thanks.
715942
Question: Milwaukee HD Hammer Drill

tvignoe

throwing a lot of sparks where brushes make contact, replaced brushes didn't help, before I go any further buying parts what could problem be.
WJA
Reply: Milwaukee HD Hammer Drill

WJA

Most likely it is the armature. Make sure you look at the serial number on your tool. Milwaukee has made a service change on this tool depending on its serial number.

Hope that helps,
WJA
Tom
Question: Wiring The Switch

Tom

Can anyone give me wiring directions for switch #23-66-1692 as used on hammer drill #5378-20. thanks.
ron
Question: Chuck Removal

ron

is the chuck right or left hand thread thank you Milwaukee 1/2 hammerdrill 5378-20 897a
Mark
Reply: Chuck Removal

Mark

Hi Ron,

The screw holding the chuck to the drill will be a reverse thread or clockwise to remove. The chuck itself is a regular thread or counterclockwise to remove. We have a very helpful article available which contains everything you need to know to remove a drill chuck. You can find the article at the following link...

http://www.ereplacementparts.com/removing-drill-chuck-c-8873_15176.html

I hope this helps with your repair!

-Mark
Accessories
Accessories for the 5378-20

Hole Saws:
See more hole saws 
49-56-0117
2" Hole Saw - 5/8"-18 Thread
$13.44

49-56-0062
1-1/4" Hole Saw - 5/8"-18 Thread
$12.42

49-56-0193
3-1/2" Hole Saw - 5/8"-18 Thread
$18.07

fancyboxy