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Fix hammer action in a hammer drill

Step 1: The Damaged Drill

Step 3: Remove the Chuck Cover

Remove the chuck cover. Pull back the locking bush and remove the rober cup with a small screwdriver

Step 4:

Unscrew the 4 phillips screws and remove the cover

Step 5:

Unscrew the 3 allen screws and remove the metallic plate

Step 6:

Remove the cylinder and find the small piston

Step 7: The Old O-ring

The old o-ring

Step 8: Replace the O-ring

Replace the o-ring with a new one

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