USD Forks strange leak
- madmanreevo
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USD Forks strange leak
A little frustrated with my rebuilt front forks, has stantions rechromed no leaks all good.
Then after a few rides noticed fork oil seaping from the collar on the upper fork tube (anodised section).
When I assembled them I had the collars moving on me as I was putting in the fork seals I Had to knock them back and secure in a vice to stop them moving. I have never had these move before
I did think at the time there was a possibilty of leaks and they havent let me down
Now I did try a little heat to the collars to enable me to feed in some loctite hydraulic seal i had in the garage. But ehen I applyed some heat fork oil bubbled up....therefore a strip down.....again is needed
I Assumed these would be an interferance fit but if they move then somethings wrong..
I know its a weird one but does anyone know how these are fixed, or a good sealer I can feed into joint once i get collars hot while off the bike.
Then after a few rides noticed fork oil seaping from the collar on the upper fork tube (anodised section).

When I assembled them I had the collars moving on me as I was putting in the fork seals I Had to knock them back and secure in a vice to stop them moving. I have never had these move before

I did think at the time there was a possibilty of leaks and they havent let me down

Now I did try a little heat to the collars to enable me to feed in some loctite hydraulic seal i had in the garage. But ehen I applyed some heat fork oil bubbled up....therefore a strip down.....again is needed

I Assumed these would be an interferance fit but if they move then somethings wrong..
I know its a weird one but does anyone know how these are fixed, or a good sealer I can feed into joint once i get collars hot while off the bike.

3rd CRM250 MK2, rebuilt incl Braided hoses,powdercoated,one off bronze swingarm bushes,taper head bearings,hard chromed fork, poweredcoated rear spring and rebuilt. custom graphics, also own TL1000s, Aprillia RS250 (300 kit stage 3 tuned), Yamaha RD400c
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Re: USD Forks strange leak
They have large o ring seals on them. Mine moved absoltely loads of times when re-doin my forks. I made a wooden frame with a big hole drilled out.
They looked ok so i left em in an have had no leakage, didnt use any sealer or anythin, just put a very thin smear of fork fluid on to lube em a bit
They looked ok so i left em in an have had no leakage, didnt use any sealer or anythin, just put a very thin smear of fork fluid on to lube em a bit
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Re: USD Forks strange leak
From memory its just like a bent clip that secures them
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Re: USD Forks strange leak
Check for accumulated air build up in the fork.
Mike
Mike
VFORCE REEDS-MUGEN HEAD AND BARREL-WHITE POWER-ALL ON MY WISH LIST!!
- madmanreevo
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Re: USD Forks strange leak
cheers guys
at least i know theres a seal in there, thought they might have been knackered. I guess as they move they will be easy enough to seperate
Are they easy to reassemble


Are they easy to reassemble

3rd CRM250 MK2, rebuilt incl Braided hoses,powdercoated,one off bronze swingarm bushes,taper head bearings,hard chromed fork, poweredcoated rear spring and rebuilt. custom graphics, also own TL1000s, Aprillia RS250 (300 kit stage 3 tuned), Yamaha RD400c
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Re: USD Forks strange leak
Yeah, they go back real easy. When you split em again, push the collar right up the fork leg an you'll then see the wire clip that holds it on. You can then take that off an take the actual collar off an clean it all up etc. Its real easy
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Re: USD Forks strange leak
This removal seal an clip is for mk2 only so you'll be reet
- madmanreevo
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Re: USD Forks strange leak
lovely jubbly cheers twisted 

3rd CRM250 MK2, rebuilt incl Braided hoses,powdercoated,one off bronze swingarm bushes,taper head bearings,hard chromed fork, poweredcoated rear spring and rebuilt. custom graphics, also own TL1000s, Aprillia RS250 (300 kit stage 3 tuned), Yamaha RD400c