Ridgid GEN5X R8642 Motor Replacement

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Introduction

For this repair you will need:

T20 Star Bit Screwdriver
J1 Philips Head Screwdriver
Prybar
Soldering Iron

To replace the motor in a Ridgid GEN5X R8642, you will need to take the saw apart into two. The screws are M4 X 16 mm (Part Number: 089041033083) and M4 x 25mm (Part Number: 660208093). Next the switch assembly must be desoldered in order to replace the motor. All parts can be found on the parts catalog link in the device page.

What you need

Step 1 Motor Replacement

Ridgid GEN5X R8642 Motor Replacement, Motor Replacement: step 1, image 1 of 1

Remove the plastic tab holding the handle cover in place by prying upward with the spudger until the tab pops off.

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Step 2

Remove the handle cover by pulling it towards the front of the saw.
The grip can sometimes become stuck and may require a decent amount of force to remove.

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Step 3

Use a T20 Torx screwdriver to remove the nine M4 X 16mm screws from the plastic housing.

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Step 4

Use a JIS #1 screwdriver to remove the two M4 x 25mm screws on both sides of the metal housing.

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Step 5

Remove one half of the plastic housing using a spudger so that the internal system is exposed.

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Step 6

Remove the one 16mm T20 screw that holds the grip support onto the saw.

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Step 7

Ridgid GEN5X R8642 Motor Replacement: step 7, image 3 of 3

Remove the five T20 Torx screws from the gear assembly cover and pull the cover off.

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Step 8

Carefully remove the motor making sure not to harm any of the wires that are attached. Place motor gently out of the way.

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Step 9

Remove the plastic wire covers to the red and black connections on the switch assembly.
When you remove the wire covers, you should be able to see the solder on the wires.
Desolder the connections on both the red and black wire using a soldering iron.
Once the solder is removed, pull out the wires with the battery port attached to the wires.