Easy
15-30 minutes
This replacement service switch assembly is utilized on Milwaukee compact hammer drills. It is an authentic OEM sourced item, not an aftermarket imitation. This assembly includes a switch and a carbon brush holder with lead wires attached. Mechanical on/off switches tend to wear out and eventually fail requiring replacement. Carbon brushes play an important role in an electric motors because they help to conduct electricity.
To replace this service switch assembly you would need a screwdriver.
• First make sure the tool is unplugged
• Remove the housing screws
• Separate the housing pieces
• Disconnect wires from the old switch and the brush card
• Remove the old assembly
• Secure the new service switch assembly
• Connect the wires
• Reassemble and test the tool
Service Switch Assembly 23-66-1236
OEM part for: Milwaukee
Part Number: 23-66-1236
Order within the next 7 hours and your part ships today! 
Product Description ?
- Classification: Part
- Weight: 0.16 lbs.
- Shipping: Ships Worldwide
Compatibility
This part will fit the following 4 machines
Milwaukee
This item works with the following types of products:
- Drill Parts
- Hammer Drill Parts
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Does this fit my product?Questions & Answers for Service Switch Assembly
Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Stopped working and the cuircuit board was burnt up
Tool Type
Hammer Drill
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
Parts Used
https://www.youtube.com/watch?v=h2hcIGQlMw0
Trigger switch and brushes were bad
Tool Type
Drill
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Torque driver #10
Parts Used
switch began to fail, intermittent run
Tool Type
Hammer Drill
Difficulty
Easy
Time
15-30 minutes
Tools Used
, star style bit
Parts Used
2.pop open cover
3. Remove old failing part
4. Install new part
5.ensure fitment, no pinched wires,correct routing
6. Reinstall cover ensuring easy fitment
7. Install screws an snug down
8. Check operation, good to go
The hammer drill was squealing, and had loss of power.
Tool Type
Hammer Drill
Difficulty
Easy
Time
15-30 minutes
Tools Used
Nutdriver, Cordless drill and torx tip
2. Removed the case screws.
3. Removed the 4 screws off the drive housing.
4. Removed the old brush and trigger assembly.
5. Reinstalled the new brush and trigger assembly in their place.
6. Reattached the drive housing to one side of the case.
7. Reattached the other half of the case.
8. Reattached the end cap.
9. Runs like new again.
OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
