Milwaukee 5262-21 Diaphragm Assembly with Bushing Replacement

Introduction

This guide will show you how to replace the diaphragm assembly. A faulty diaphragm assembly can lead to a few different issues including irregular shaking, grinding, or leaking grease.

What you need

Step 1 Housing Assembly

Milwaukee 5262-21 Diaphragm Assembly with Bushing Replacement, Housing Assembly: step 1, image 1 of 1

Remove the ten 19mm T20 Torx screws shown in red.

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Step 2

Remove the red Housing Assembly by lifting it up off of the tool.

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Step 3 Reduction Gear Assembly

Milwaukee 5262-21 Diaphragm Assembly with Bushing Replacement, Reduction Gear Assembly: step 3, image 1 of 2

Milwaukee 5262-21 Diaphragm Assembly with Bushing Replacement, Reduction Gear Assembly: step 3, image 2 of 2

Remove the two 10mm T-10 Torx screws that attach the top brush holders to the motor housing.
Remove the two 10mm T-10 Torx screws that attach the bottom brush holders to the motor housing.

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Step 4

Using a metal spudger, pry off each brush holder.

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Step 5

Milwaukee 5262-21 Diaphragm Assembly with Bushing Replacement: step 5, image 3 of 3

Remove the four 37mm T20 Torx screws shown in red.

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Step 6

Pull the front portion of the tool out from the motor housing.

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Step 7

Milwaukee 5262-21 Diaphragm Assembly with Bushing Replacement: step 7, image 3 of 3

Remove the two 11.5mm T10 Torx screws shown in red.

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Step 8

Pull the 120V armature assembly out of the diaphragm assembly.

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Step 9

Using a metal spudger, pry the diaphgram assembly out of the gear case.

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Step 10

Now that you have loosened the diaphragm, you can now pull it out of the gear case.

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Step 11

Milwaukee 5262-21 Diaphragm Assembly with Bushing Replacement: step 11, image 3 of 3

The diaphragm assembly will be lathered in grease. In order to move forward, you may want to give it a wipe down to remove any extra grease.
After removing some grease (if needed), remove the two 15mm T20 Torx screws shown in red.

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