Forks aren't so smooth after rebuild
Just replaced my fork seals. Went for a slightly lighter weight oil than the 15w i had in before. (and it was purple!)
Now it's all back together, there's a minor "clonk" when bouncing the front end, and a fair bit of stiction. Is this normal? I don't remember it doing this before - although i didn't waste time bouncing the front end much with the engine off, admittedly. Without the internals fitted, the forks felt quite smooth. The only bit that went wrong was refitting the front wheel. Pig of a job getting the axle to engage the threads. I eventually loosened the right fork and managed, but it was very stiff. I've probably cross threaded it. GSXR front end time? |
Re: Forks aren't so smooth after rebuild
I remember much the same with my RGV. Ended up taking it apart and doing it again and all was well. Whatever I'd cocked up was de-cocked. Just a wee alignment mishap probably.
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Re: Forks aren't so smooth after rebuild
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I spose what I'm after is for someone to bounce their SV and see if it's completely smooth throughout its travel or does it clunk slightly. Plenty of threads across the internet about clunky forks after rebuild, but the common theme is none of us muppets know if it did it before. |
Re: Forks aren't so smooth after rebuild
The forks can go out of parallel if you've had them off. Leave the bottom yoke alone, slacken the top yoke pinch bolts a little, and also the pinch bolts for the wheel spindle (not the main nut). Bounce the forks a few times and re-tighten. This won't change the alignment but will get them running parallel to each other again, and you should feel a difference.
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Re: Forks aren't so smooth after rebuild
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Am I to assume then that a slight clunk definitely isn't normal on stock SV forks? Does anyone even still have stock forks on their SV? :o |
Re: Forks aren't so smooth after rebuild
i'll hazard a guess and say that one of your damper rods is not sitting in the stanchion properly. did you look down the stanchion to make sure that the damper rods were sitting in the middle of the stanchions when you put the forks back together.
or one of your fork legs is bent. |
Re: Forks aren't so smooth after rebuild
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I had some trouble getting the cup thing aligned properly - "oil lock" in the diagrams - but i'm pretty sure i managed to get it right eventually. It can only go either right or upside down. I need some time and daylight to look at it properly, but I think it's either: a) they all do that sir b) play in the disk mount - semi floating brake disk c) worn bushes the added "stiction" is probably just down to the new seals. It could just be me being paranoid. I haven't managed to get it out for a proper test ride yet so I can't tell if the handling is affected. |
Re: Forks aren't so smooth after rebuild
yes but the damper can sit squint, i have been there.
if your using the standard springs than yes you do get a clonk now and again. did you pump the stanchions up and down to dispel the air when you put the oil in before measuring the oil height? |
Re: Forks aren't so smooth after rebuild
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I'm not talking about the SV fork clonk when you hit a big bump. It's totally reproducible just by bouncing the front end. |
Re: Forks aren't so smooth after rebuild
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Thanks all for the input. *Sigh of relief* If I'd broken my bike, I'd have to ride Miss Ophic's cruiser to work... |
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