Quick Fix: How to Replace the Gear Box on a DeWalt D28402 Grinder

  Remember to use our DeWalt parts finder to find all the right parts for your DeWalt tools.   Replacing the Gear Box

1. Remove the grinder accessories

Unscrew the handle.

Remove the grinding wheel.

Release the tension on the guard and remove it. 

2. Remove the gear box cover

Remove the four screws that secure the gear box cover. Be sure you get the gasket along with the cover.

3. Remove the gear box

Remove the four screws that fasten the gear box to the body, then slide the gear box away from the grinder.

4. Install the new gear box

Slide the new gear box into place and be sure the gears mesh. Then fasten the gear box with the screws.

5. Install the cover

Now you can install the old cover onto the new gear box.

6. Re-install the accessories

Re-attach the handle, guard, and grinding wheel to finalize the repair.

[Back to Top]   Conclusion
Replacing the gear box on your DeWalt D28402 grinder only takes about 10 minutes and will get you back to work for a lot less than a repair shop. Learning how the gear box works can also help you with diagnosing basic gear problems with your grinder.
Remember to use our model number search engine to find the OEM parts designed for all your power tools.
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