Posts
645
Joined
5/30/2017
Location
Tucson, AZ, USA
Having some issues with my shock. It was revalved previously by FC, and had a bladder kit installed. I was very happy with the performance. I decided to service it when I swapped my AER forks out for my Ohlins forks. Here’s what I did:
- Rebuilt Seal Head
- Installed new piston
- Installed new bumper
- Hand-bled shock using normal method, without vacuum bleeder, until no bubbles present. Used KYB K2C oil (same weight as FC’s shock fluid)
- Filled Bladder to 140 PSI with nitrogen
I used all WP parts. The shock has felt very soft and the rebound has been a bit too fast since I serviced it (so far it has not bottomed out, incidentally). I have pulled the shock back apart to verify the piston was oriented correctly, and rebled it three separate times now. I know for sure the correct shim stacks are on the correct sides of the piston. I also verified that the rebound rod was moving in the shaft when moving the adjuster. Additionally, when I originally installed the new piston, I did not surface it like the WP manual calls for. I did that on a piece of glass this last time around and felt no change. I verified my clicker settings. I’m at a loss at this point, and am starting to wonder if this whole thing is in my head. Any ideas?
- Rebuilt Seal Head
- Installed new piston
- Installed new bumper
- Hand-bled shock using normal method, without vacuum bleeder, until no bubbles present. Used KYB K2C oil (same weight as FC’s shock fluid)
- Filled Bladder to 140 PSI with nitrogen
I used all WP parts. The shock has felt very soft and the rebound has been a bit too fast since I serviced it (so far it has not bottomed out, incidentally). I have pulled the shock back apart to verify the piston was oriented correctly, and rebled it three separate times now. I know for sure the correct shim stacks are on the correct sides of the piston. I also verified that the rebound rod was moving in the shaft when moving the adjuster. Additionally, when I originally installed the new piston, I did not surface it like the WP manual calls for. I did that on a piece of glass this last time around and felt no change. I verified my clicker settings. I’m at a loss at this point, and am starting to wonder if this whole thing is in my head. Any ideas?
The piston fits tightly into the shock body. It looks exactly the same as the original, and the original didn’t look like the ports were altered by FC. I don’t think it’s bypassing. But of course, a fraction of a millimeter could make a difference I’m sure.
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http://www.jackscycles.com/files/Suspension_Fluids.pdf
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