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Buell Forum » Big, Bad & Dirty (Buell XB12X Ulysses Adventure Board) » Archive through April 21, 2016 » Stiff rebound adjusters. « Previous Next »

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Hunger
Posted on Thursday, March 03, 2016 - 06:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I was adjusting suspension today. The manual says you need turn all the adjusters (except preload) clockwise until stop and then turn back certain number of turns. The problem is I can do that only with compression adjusters. Rebound adjusters resist more and more as I turn them clockwise. So that I cannot reach a clear 'stop'. This happens to both front and the rear. Any ideas how to fix it, I've heard there are ways to kind of work this off?
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Mark_weiss
Posted on Friday, March 04, 2016 - 09:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Clean them. A bit of very, very, thin oil along the forks' rebound adjusting screws should moisten the o-rings and allow the screws to turn more easily. Try turning them out first, then in. Let the oil do its job. The shock adjuster is more difficult to lube, but will probably benefit from the similar (maybe spray lube) treatment.
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Hunger
Posted on Friday, March 04, 2016 - 05:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Would cable lube in spray do the job? It's kind of thin. Or WD-40 but I wouldn't call this oil...
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Nillaice
Posted on Friday, March 04, 2016 - 05:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

WD-40 is mostly kerosene

maybe silly-cone?
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Nillaice
Posted on Friday, March 04, 2016 - 05:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

fork/hydraulic fluid ... or just use a drop off of the dipstick conveniently located in the nearest swingarm
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Ourdee
Posted on Friday, March 04, 2016 - 06:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That Nillaice is the smart one today.
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Hunger
Posted on Friday, March 04, 2016 - 07:13 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I just used WD-40 on them. I'll leave it like this until the morning then if it doesn't help will go and buy something more fancy. By the way I've just noticed the shock rebound actually turns the whole 4 turns.. just the 'turn in' stop is not as clear as the 'turn out'. But the front... they won't move even one full turn.
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Hunger
Posted on Saturday, March 05, 2016 - 04:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

And... nothing. I'll try oil. Have to get them to work somehow.
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Mark_weiss
Posted on Saturday, March 05, 2016 - 12:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Marvel Mystery Oil?
Bel Ray 6inOne?

Fork rebound adjusters can bottom out early if they were not reset properly the last time the forks were disassembled. No ideas on the shock though.
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Arcticktm
Posted on Monday, March 07, 2016 - 01:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Make sure you are not trying to turn it past the stop. How many turns can you back it out now?
The turn in stop is not a hard stop. You don't want to use too much force.
Also, further to what Mark Weiss wrote, both the rebound and compression adjusters are subject to assembly variation even in normal cases.
You may have +/1 turn (not clicks/indents) different than the owners/service info for the ones that have a lot of positions (say double digits or more).
However, if you are WAY off, it could be an assembly problem if it happened after a service.
I had a fork seal done by a shop and had this problem (not even 1 full turn on rebound adjuster on one fork). Tech had not properly re-assembled fork. Fortunately I had checked it and written down my settings as well as how many positions my forks had before the seal repair.
I had them re-assemble it and then it was close to original number of adjustments. Never had that problem when I did my own service for fork oil changes and the spring change I did many years ago.

You definitely don't want to use brute force when it comes to suspension adjusters.
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Hunger
Posted on Monday, March 07, 2016 - 04:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

How many turns can you back it out now?

I can turn them clockwise about 3/4 turn from 'max out' position. At this point they go so hard and spongy that I'm afraid to continue. So I'm quite blind of how far from 'max in' I am.

I'm not in the mood to disassemble my forks now : D Can I at least assume that if I turn both adjusters clockwise the same distance from 'max out' then there will be the same amount of rebound in each fork? Or it doesn't work that way?

(Message edited by Hunger on March 07, 2016)
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Arcticktm
Posted on Thursday, March 10, 2016 - 01:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

No, that doesn't sound right at all.
BTW, clockwise is typically called max in (cw), not max out (ccw), and provides the most damping for whatever the adjust controls (compression or rebound). That means the stiffest compression damping and the slowest rebound after compression.

Your case sounds a lot like my fork that was mis-assembled. I also had less than 1 full turn on the rebound adjuster for that fork.
I'm not sure on your last question, as I didn't really take the time to understand what was wrong in my fork when they put it together wrong. I just know it didn't happen when I took them apart and put them back together before for spring/oil service!
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Hunger
Posted on Thursday, March 10, 2016 - 04:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

BTW, clockwise is typically called max in (cw), not max out (ccw), and provides the most damping for whatever the adjust controls (compression or rebound).

I know. I'm able to max them out but not max in.

I'm not sure on your last question, as I didn't really take the time to understand what was wrong in my fork when they put it together wrong.

Yeah, no problem. I'm going to have them properly re-assembled anyway so it's not really important. Thanks for response!

(Message edited by Hunger on March 10, 2016)
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Hunger
Posted on Monday, March 14, 2016 - 03:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

And it's fixed. As Arctickm suggested the rebound adjusters were not properly zeroed. After doing that and re-assembling I'm having almost 4 turns of play which seems right. The turn in stop is not instant indeed but again that's normal.
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