CBR 600F 1987 - 1990 CBR 600F Forum

Fork Seals...........

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Old Apr 3, 2009 | 01:19 PM
  #1  
Budji's Avatar
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Default Fork Seals...........

been quoted 2hrs labour (plus parts and oil) to change the seals at my local workshop, does this sound reasonable???

also i know the seals themselves dont cost too much but how much is the fork oil likely to set me back???

all this is down to an 80mph sparrow............
http://s112.photobucket.com/albums/n...t=DSC01420.jpg
(sorry about the quility of the pic, camera phone)
 
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Old Apr 4, 2009 | 01:58 PM
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Yes that sounds about right. Thats is about what it took me to do mine myslef. Disassembly and all. They are pretty to easy to do yourself if you want to. I didnt use the special tools or anything. I just loosened up the bolt on the bottom of the fork, popped the top seal, undid the spring clip and kept pulling the inner tube upwards ( outward position ) and popped out the inner seal and race. Then took a small punch and TAPPED everything back it. then put back in the bolt on the bottom. I have no leaks or anything and they hold 6 psi everyday.
 
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Old Apr 4, 2009 | 02:28 PM
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ya, that time sounds reasonable to me. how did a sparrow cause your fork seals to leak?
 
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Old Apr 4, 2009 | 02:40 PM
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they usualy start leaking because there is crud stuck in the lip of the seal. here is a trick to try cleaning them first. pull the dust caps up to gain access to seals. Use a piece of 35mm film negative. work it down between the inside lip of seal, and fork tube. work it down, slide it across, and pull out in kinda a sweeping motion. keep working it around the fork tube, wiping off any crud removed. just go a little at a time, and it usualy takes a couple revolutions until it starts coming out clean. the film negative is thin and stiff, and the little holes really help to grab and remove debris.
this may or maynot work, depending on how far gone your seals are.
 
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Old Apr 4, 2009 | 03:37 PM
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tbh its only 1 but its weeping quite a lot, gonna get it sorted asap.

as to how the sparrow caused it i'm not quite sure, i know they were fine that morning, on the way home i hit a sparrow, didnt realise i hit hime till i got home and found him there as per my pic above, and found the fork seal had started to weep
 
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Old Apr 8, 2009 | 08:18 PM
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I use a piece of pvc pipe as a a seal driver, get one the right size around and long enough so that you can slip it over the fork leg and it will still be higher that the upper part of the fork leg. then a nice gentle tapping with a rubber mallet and you can drive them right in like they should be
 
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