39mm fork rebuild problems
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3rd Gear
Joined: Feb 2018
Posts: 7
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From: west palm beach
39mm fork rebuild problems
the 6mm bottom hex bolts on both of my lowers are completely locked up. Anyone with any suggestions on how to get them loose? getting ready to drill the heads off them
Dirt don't hurt
Joined: Jan 2011
Posts: 21,065
Likes: 4,561
From: Haslet Texas
Any thing else and the bolt just spins in place without loosening.
Seasoned HDF Member
Joined: Aug 2011
Posts: 11,814
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From: SW Ohio
You do still have the fork caps and springs installed; right? If not, do so or use the proper tool to hold the damper rod from spinning. In a pinch a broom handle will work. If the ratchet and M6 hex bit won't break it loose it is indeed time for an impact. Mine is electric (corded) and it gets the job done if I have trouble. One note, I never use long ball end bits on fork legs, square end only and of good quality. The ball end usually mauls the head a little. Also, cheap hex bits, especially long ones, don't impart all the torque to the fastener. I use Snap On but there are other good brands out there.
Dirt don't hurt
Joined: Jan 2011
Posts: 21,065
Likes: 4,561
From: Haslet Texas
You do still have the fork caps and springs installed; right? If not, do so or use the proper tool to hold the damper rod from spinning. In a pinch a broom handle will work. If the ratchet and M6 hex bit won't break it loose it is indeed time for an impact. Mine is electric (corded) and it gets the job done if I have trouble. One note, I never use long ball end bits on fork legs, square end only and of good quality. The ball end usually mauls the head a little. Also, cheap hex bits, especially long ones, don't impart all the torque to the fastener. I use Snap On but there are other good brands out there.
I do know the battery operated ones don't have enough torque to get the bolt free, at least mine doesn't. 20v Dewalt.
As for the ball end mauling the head a little when I tried one it stripped the head immediately. Then I had no choice but to drill it out.
Dirt don't hurt
Joined: Jan 2011
Posts: 21,065
Likes: 4,561
From: Haslet Texas
You won't really know what else until you take it apart and look.
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