400exc fork problem, pls help

[MoGwai]

Help,EXC 400 forks big problem!
I've just install a WP revalvr kit brought from Ebay with the No.1 setting on the shim stacks(woods) and 5wt oil.

After a weekend race, I found that my fork sink down with just a little rebound whenever I press the front brake and pushes them down and when I place it back to its sidestand again and with some help from me tilting the bike onto its side stand, the forks will rebound up with 2-3 jerking action to its full travel!

Kind of like the forks' seal gripping too tight to the forks and letting it go not in a smooth 1 action but with much restirction on it.
Rebound and comp. clickers did not help.
Can you guys pls help me. thks a million! :whiner:

Chris :ugg:

 

[Layton]

Maybe you didn't install the front wheel correctly which is causing the forks to bind.
Loosen the axle clamps, push down on the front end several times which should allow the forks to position themselve properly on the axel and then retighten the axle clamps.

Hope this helps.

 

[MoGwai]

:eek: oops !
Hope that is the case.
Will try the above mention advice, and let you know!
Anyone have more advices, pls feel free to help.
Thanks a million

 

[jeb]

I'm sure Layton nailed it. I responded to this in the suspension forum, too. Follow the instructions in the owners manual to the letter and you should be free of the problem.

 

[Wanker]

How timely.... Steve from Factory Connection just gave our club a suspension maintenance primer last night. Some thoughts..

1. Read your manual - My KTM manual has explicit instructions for front axle installation and associated alignment.

2.Tighten the bolt on the end of the axle and the axle clamp on the left side only ( right side of axle will slide to match when front brake is held on and front end pushed up and down ).

3.Torque only the lower triple clamp bolts before pumping front end. This allows forks to self align and become parallel during aforementioned front end pumping.

4. Use a torque wrench when tightening pinch bolts. Apparently many people overtorque when reinstalling their forks and call up FC in exasperation. Most of them recheck the pinch bolt torque and never call back. I have written the torque specs on my triple clamps in indelible marker since I'd forget my name if it weren't tatooed on my forhead.

Good Luck.

 

[euro gasgas]

I don't quite understand your description of the problem - but if you are losing all rebound - it may be the checkplates on the compression pistons are not sealing properly. If this is the case - you will need to disassemble things, check the compression pistons, fix the checkplates, clean everything up and put it back together...

jeff
'01 gasgas ec300
My Sponsors...
www.lt-racing.com GasGas Performance Accessories and Services
www.smackovermotorsports.com The GasGas Parts Warehouse