Difficulty
Easy
Steps
6
Time Required
30 minutes
Sections
1
- Forward/Reverse Switch
- 6 steps
Flags
0
BackMilwaukee Impact Wrench 9070-20
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Introduction
If the forward/reverse switch is not working or fails to function, use this guide to replace it in your device.
What you need
Step 1
Forward/Reverse Switch
- Ensure that the device is unplugged from any power source to avoid electrical shock.
- Flip the device and remove four 18mm screws using screws using a T20 Torx screwdriver.
- Remove four 14mm screws using a T20 Torx screwdriver.
Ensure that the device is unplugged from any power source to avoid electrical shock.
Flip the device and remove four 18mm screws using screws using a T20 Torx screwdriver.
Remove four 14mm screws using a T20 Torx screwdriver.
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Step 2
- Remove the four screws on each corner of the gear box assembly using a T20 Torx screwdriver.
- Use a plastic pry bar slide out the gear box assembly away from the main body.
Remove the four screws on each corner of the gear box assembly using a T20 Torx screwdriver.
Use a plastic pry bar slide out the gear box assembly away from the main body.
Step 3
- Separate the top half of the clam shell from the tool.
- Remove the gearbox assembly by sliding it forward.
- Abrupt pulling may damage the motor brushes. Please remove it with caution.
- The bushes may need to be compressed for easier removal of the motor.
Separate the top half of the clam shell from the tool.
Remove the gearbox assembly by sliding it forward.
Abrupt pulling may damage the motor brushes. Please remove it with caution.
The bushes may need to be compressed for easier removal of the motor.
Step 4
- Pull up on the switch to remove it from the plastic mount.
- There are six wires connected to the back of the switch.
- Remove the black field wire winding from the switch.
Pull up on the switch to remove it from the plastic mount.
There are six wires connected to the back of the switch.
Remove the black field wire winding from the switch.
Step 5
- Remove the blue lower brush wire (top right) from the connector.
- Remove the black AC power wire from the switch.
- The wires do not need to be removed in order, but doing so helps to minimize confusion.
Remove the blue lower brush wire (top right) from the connector.
Remove the black AC power wire from the switch.
The wires do not need to be removed in order, but doing so helps to minimize confusion.
Step 6
- Flip the switch vertically.
- Remove the white upper brush wire from the connector.
- Reconnect all wires and replace the new switch back into the plastic case mount.
- Ensure that all wires are clear of the case so that they will not be damaged on reassembly.
Flip the switch vertically.
Remove the white upper brush wire from the connector.
Reconnect all wires and replace the new switch back into the plastic case mount.
Ensure that all wires are clear of the case so that they will not be damaged on reassembly.
To reassemble your device, follow these instructions in reverse order.
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Author
with 4 other contributors
Brandon Schneiberg
Member since: 09/26/2019
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Team
Embry-Riddle Aeronautical University, Team S13-G7, Lamothe Fall 2019
Member of Embry-Riddle Aeronautical University, Team S13-G7, Lamothe Fall 2019
ERAU-LAMOTHE-F19S13G7
3 Members
5 Guides authored
