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running fork air pressure

  • Thread starter Thread starter gearhead13
  • Start date Start date
G

gearhead13

Guest
I have been running about 10 psi pressure in my forks for a few years with the stock springs. I upgraded to progressive springs and let the pressure out and a few months later and my fork seals are leaking:(
I am wondering if running some air pressure helps the seals, or is it just a coincidence?
 
It's just a coincidence. Or did you maybe overfill the forks?
I believe I filled them with the proper amount, its been a few years since I rebuilt them. No leaks for 3 years or so then I let out the air pressure and soon after they are leaking. The forks were running lower with the new springs and no pressure, I wonder if that had something to do with it:confused:
 
They shouldn't have run lower. Did you make up the spacer following the instructions with the new springs?
 
They shouldn't have run lower. Did you make up the spacer following the instructions with the new springs?
The instructions said no spacer. They have adjustable preload at the top.
I set them at the lowest setting, but have cranked it up two notches since.
 
Any rust spots in the near area on the fork leg? Maybe a small tear.... Do you run all year round? Maybe they dried out over the winter.

Did you try running some very fine plastic (like a 35mm photo negative) around between the fork leg & the seal? Sometimes if there is a bit of crud there this cleans it out & they seal again.

Unless you do no mileage a year 3 and a bit years may not be too bad for fork seals...

OEM seals or aftermarket?
 
Any rust spots in the near area on the fork leg? Maybe a small tear.... Do you run all year round? Maybe they dried out over the winter.

Did you try running some very fine plastic (like a 35mm photo negative) around between the fork leg & the seal? Sometimes if there is a bit of crud there this cleans it out & they seal again.

Unless you do no mileage a year 3 and a bit years may not be too bad for fork seals...

OEM seals or aftermarket?
I ride it almost all year round. I bought the seals from Z1 I think, so probably K&L. Used K&L to rebuild my master cylinder too and haven't had a problem.
I put about 9psi back in them, I'll ride it for a while and see what happens.
 
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