Grinder Repair – Installing the 5-Inch Guard (DeWALT Part # 397661-02)

Grinder Repair – Installing the 5-Inch Guard (DeWALT Part # 397661-02)


The guard assembly consists of the wheel guard
and a quick lock cam assembly already installed to it. The guard attaches to the hub on the grinders
gearbox and covers half of the grinding wheel. It could be adjusted to provide the best safety
for your task. The guard can be damaged by dropping the grinder. Eventually, the cam lock can wear out. Replacing your grinder’s guard is a repair
that you can do yourself, and I’m going to show you how. Hi, I’m Mark Sodja. Do-it-yourself repairs like these are easier
than you might think. From lawn machines to cordless drills, kitchen
mixers, outdoor grills, our how-to videos walk you through each repair from start to
finish. Doing it yourself means never having to do
it alone. Let’s get started. I’ll begin by removing the nut from the grinder. I’ll engage the spindle lock and use my wrench
to remove the nut. Mark: Now, I can remove the flange that’s
located beneath the nut. It has an O-ring that holds it to the spindle,
so a couple of screwdrivers can be helpful to pry it off. Mark: Now, I’ll rotate the guard around until
the large tab on the guard aligns with the large opening on the hub then I can just pull
the guard away from it. Now, I can install the new guard. Again, I’ll line the large tab with the large
opening, rotate the guard around to where I want it located on the grinder and lock
it in place. If you need to adjust the tension on the cam
latch, you can do that by adjusting the screw. Now, I can reinstall the flange. I align the recess on the back of the flange
with the spindle. Press it onto the spindle. I’ll engage the spindle lock and make sure
that the recess aligned with the spindle and that looks good. Now, I’ll reinstall the nut. I would place whatever grinding wheel I was
using onto the grinder. If I’m using a standard grinding wheel, I’ll
install the nut so the side with the 7/8 flange is down against the wheel. If I was using a cut-off wheel or a diamond
cutting wheel, I would install the flange so the flush side is against the wheel. Then I just thread the nut onto the spindle,
engage the spindle lock and secure the nut with the wrench. That’s how you replace the 5-inch guard assembly
on your grinder. Be sure to check back often for new videos
and expert advice. If you found this video helpful, give us a
thumbs up and leave a comment.

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