Compression adjustment leaking - Page 2 - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #11 of 19 (permalink) Old 05-21-2014, 04:17 AM
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Compression Adjuster Screw

Hi, Sorry to resurrect an old thread, but what was the final solution?

Are these parts serviceable, or does it need to be a new fork tube?

I have the same problem, fortunately/unfortunately, my dealer managed to do the damage.

Thanks in advance.

Alan
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post #12 of 19 (permalink) Old 03-02-2016, 05:03 PM
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Had the same problem on my 2005 FJR. One of my compression rebound damping adjusters started leaking. It happened a few months after I replaced the oil and seals. The dealer said that the caps are not serviceable and would have to replace - 175.00 each! Obviously there is an o-ring in there that has given up - to bad they appear to be permanently assembled with press in caps.
I was able to get it to stop leaking by turning the adjuster all the way in tight. So-far so good and I like the bike's handling better now. Seems more planted.

Also - it's not the tube it's the cap

Last edited by fashby; 03-02-2016 at 05:10 PM.
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post #13 of 19 (permalink) Old 08-10-2019, 04:23 PM
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I have a 2008 FJR that I bought new that has developed leaks at both lower compression adjustments. This is my first post so may not have full access to what I need. Do I need to replace the lower fork tubes, very costly and labor intensive I would guess.
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post #14 of 19 (permalink) Old 08-10-2019, 05:28 PM
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You don't h ave a location in your profile, so I don't know where you are. My recommendation is to call a local suspension shop, failing that, call Cogent Dynamics in Fletcher, NC... they work on all kinds of bike suspensions.

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post #15 of 19 (permalink) Old 08-11-2019, 04:26 AM
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Originally Posted by Dakota View Post
I have a 2008 FJR that I bought new that has developed leaks at both lower compression adjustments. This is my first post so may not have full access to what I need. Do I need to replace the lower fork tubes, very costly and labor intensive I would guess.
Are you sure its a leak from the compression adjustment because its very rare and you have both leaking - never seen that one before in the 13 years ive been here.

It may be the fork seals leaking and you are just seeing it drip off the compression adjusters? i would wash off the fork legs and double check your diagnostic.

If its the fork seals there may be a solution before you go stripping the forks down come back and let us know.
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post #16 of 19 (permalink) Old 08-11-2019, 10:03 AM
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There is one other place it could be leaking from, the bolt that goes up from the bottom of the fork, on a bike this old it must have had at least one fork rebuild before now and the bolts could be leaking.
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post #17 of 19 (permalink) Old 08-12-2019, 04:16 PM
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Quote:
Originally Posted by RaYzerman View Post
You don't h ave a location in your profile, so I don't know where you are. My recommendation is to call a local suspension shop, failing that, call Cogent Dynamics in Fletcher, NC... they work on all kinds of bike suspensions.
Quote:
Originally Posted by Polar View Post
Are you sure its a leak from the compression adjustment because its very rare and you have both leaking - never seen that one before in the 13 years ive been here.

It may be the fork seals leaking and you are just seeing it drip off the compression adjusters? i would wash off the fork legs and double check your diagnostic.

If its the fork seals there may be a solution before you go stripping the forks down come back and let us know.
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Originally Posted by Alan smithy View Post
There is one other place it could be leaking from, the bolt that goes up from the bottom of the fork, on a bike this old it must have had at least one fork rebuild before now and the bolts could be leaking.
I will clean off both to be certain. I am in the Pensacola FL area FWIW. I don't see any sign of oil above the adjusters but better to be 100% sure before doing anything. I have the service manual so am aware of the drain bolts above the axle.
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post #18 of 19 (permalink) Old 08-13-2019, 06:08 AM
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Have you checked what the settings of the lower damping screws are at, you may have to back them off a bit, then see if it still leaks.
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post #19 of 19 (permalink) Old 08-13-2019, 02:43 PM
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Originally Posted by Alan smithy View Post
Have you checked what the settings of the lower damping screws are at, you may have to back them off a bit, then see if it still leaks.
I have not messed with them yet but that is the plan. Run them full in then back out to close to mid setting but not quite.

Thanks!
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