Part Location Diagram of 23-66-1421 Milwaukee On-off Reversing Switch
See part 17 in the diagram
( Grid squares measure 1x1 inch )

On-off Reversing Switch 23-66-1421

Manufactured by:
Milwaukee
ERP Number:
ERP10123641
Part Number:
23-66-1421
Original Equipment Manufacturer ?
On Order

Easy 

30 - 60 mins 

(8 rated repairs) ?

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Product Description

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This switch is an OEM genuine replacement part. It is used in Milwaukee electric drills/drivers. Included is one (1) each of: switch handle casing, trigger switch, reversing switch, and cord clamp. A total of seven (7) screws are also included. Power cord and cord protector are sold separately. A Torx screwdriver is needed for this repair.

Troubleshooting

This part works with the following brands:
  • Milwaukee
This part works with the following products:
  • Electric Drill

Customer Part Reviews

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Average Rating (out of 5):
★★★★★
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(2 Reviews)
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Questions & Answers

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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.

Easy 

30 - 60 mins 

(8 rated repairs) ?
  • 1
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Reversing switch and trigger switch inoperative

KURT from Woodburn, Oregon

4 of 4 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers
Parts Used:
23-66-1421
1. Read instructions!
2. Removed plastic handle.
3. Used o-ring pick to remove wires from old switch.
4. New handle is a bit longer, so I stripped cord to fit.
5. Crimped on new connectors.
6. Installed all wires.
7. ** When I fitted up the new handle to the drill, I found that the cut out for the green ground screw was not correct so that the handle would not mate securely to the drill. I took my Dremel tool and carved out a notch where the ground screw could correctly nest.
8. Drill is back in action and ready to break your arm if you don\'t respect it\'s torque!
9. Thank you, ereplacement parts!!!
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The Milwaukee Super Hole Shooter drill would not reverse. Would only run on the forward direction no matter which position the reversing switch was in.

Don from Dubuque, Iowa

2 of 2 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers
Parts Used:
23-66-1421
I followed the step by step installation instructions to the letter. Everything was concisely covered in the instructions. In about 45 minutes the job was complete. The instructions were bulletproof.
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Reversing switch bad

Wallace from Gardner, Kansas

2 of 2 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
23-66-1421
Remove old handle, remove wires from old switch, place wires according to new switch directions, replace handle on drill!
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Reverse switch on drill was no longer operational.

Steven from Basin, Wyoming

2 of 2 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
23-66-1421
Removed the old trigger, reverse switch, and grip assembly from the drill. Install new one, following provided instructions. Take care to match wire colors to their correct termination points. Pretty easy process. When re assembling make sure no wires get pinched or squished between the grip halves.
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Trigger got stuck

Garrett from tonganoxie, Kansas

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
1- 2 hours
Tools:
Pliers, Screw drivers
Parts Used:
23-66-1421, 22-18-0680
Remove and clean screws from handle.
Open handle and remove screws from the
clamp holding the pigtail wire.
Open replacement handle and follow instructions.
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Switch broke

Albert from Belmont, South Dakota

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Screw drivers
Parts Used:
23-66-1421
Simply followed the installation instructions that were included with the switch kit
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WonÆt reverse, cord weathered, 25 years and going strong again.

Wendell from NACOGDOCHES, Texas

1 person found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
Less than 15 mins
Tools:
Pliers, Screw drivers
Follow instructions included with new switch kit. New handle and switch configuration to upgrade to new style.
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Trigger wasnGÇÖt engaging drill

Nigel from Naples, Florida

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
23-66-1421
Unit comes with instructions, just pieced the trigger back together if you take it apart you can put it together
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  • 1

Model Cross Reference

This part works with the following models:
ERP Number: ERP10123641
Manufacturer Part Number: 23-66-1421
Brand Model Number Description
Milwaukee 1660-1 Electric Drill - Electric Drill / Driver
Milwaukee 1662-3 Electric Drill - Electric Drill / Driver
Milwaukee 1754-1 Electric Drill - Electric Drill / Driver
Milwaukee 1854-1 Electric Drill - Electric Drill / Driver
Milwaukee 1854-3 Electric Drill - Electric Drill / Driver
Milwaukee 2404-1 Electric Drill - Electric Drill / Driver