Replaced fork seals, now my forks barely move HELP

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10 Apr 2015 18:26 #667444 by Flyndrive
Replaced fork seals, now my forks barely move HELP was created by Flyndrive
I just replaced my fork seals and bushings on my 1985 GPZ900r. Now my forks don't compress at all hardly. Haven't ridden it yet, but in the garage I can not get the forks to move. While putting the 10wt oil in I pumped the fork legs to get the air out. Filled to the correct level. Used the factory service manual.
1980 KZ 550A1
1985 GPZ 900R

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  • SWest
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  • 10 22 2014
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10 Apr 2015 19:17 #667445 by SWest
Replied by SWest on topic Replaced fork seals, now my forks barely move HELP
You might have over filled it. Open the drain screws and let some on the oil out. Once it stops, close them and pump them again.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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10 Apr 2015 20:14 #667457 by 650ed
Replied by 650ed on topic Replaced fork seals, now my forks barely move HELP
When you filled the fork legs did you have the front tire off the ground and use the measurement (from the top of the fork tube to the oil) as specified in the manual? Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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10 Apr 2015 21:11 #667463 by StreetfighterKz
Replied by StreetfighterKz on topic Re:Replaced fork seals, now my forks barely move HELP
I know on the newer bikes that fork oil level is measured with the spring out and fork slider compressed. I know on all the bikes I've changed seal on both cartridge and damper rod, I've always done that way.

Later, Doug
1978 z1000 Streetfighter
1976 z900 Stripfighter (work in progress)
1983 Gpz750 Resto-Mod
1989 Vmax

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  • Mean Green Z28
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10 Apr 2015 21:59 #667468 by Mean Green Z28
Replied by Mean Green Z28 on topic Re:Re:Replaced fork seals, now my forks barely move HELP

StreetfighterKz wrote: I know on the newer bikes that fork oil level is measured with the spring out and fork slider compressed. I know on all the bikes I've changed seal on both cartridge and damper rod, I've always done that way.

Later, Doug

Saw it the same on some training/how-to vids.
2010 Camaro 2SS
1983 Kawi KZ1000P ... bag of bolts

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11 Apr 2015 06:47 #667488 by Flyndrive
Replied by Flyndrive on topic Replaced fork seals, now my forks barely move HELP
Yes I measured from the top off the fork tube to the oil. 357mms with tube extended per the SM. The tire was not on the forks when I filled them. I might try letting a little out to see if it helps.
1980 KZ 550A1
1985 GPZ 900R

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11 Apr 2015 07:15 #667490 by martin_csr
Replied by martin_csr on topic Replaced fork seals, now my forks barely move HELP
What seals & bushings did you install? ... wondering if the fit is wrong or something. ???
1981 KZ650 Competition Sports and Road

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11 Apr 2015 07:30 #667491 by SWest
Replied by SWest on topic Replaced fork seals, now my forks barely move HELP
I did that. I had just replaced my seals for the 2nd time and one still leaked. I let some of the oil out and the leak went away. Before I couldn't compress my forks ether. Had to start over.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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11 Apr 2015 14:14 #667523 by Flyndrive
Replied by Flyndrive on topic Replaced fork seals, now my forks barely move HELP
How much should you be able to compress the forks by just pushing or bouncing on the handlebars. I rode up and down the street and it felt fine, but there really aren't any bumps to see if thing moved.
1980 KZ 550A1
1985 GPZ 900R

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11 Apr 2015 18:25 #667538 by SWest
Replied by SWest on topic Replaced fork seals, now my forks barely move HELP
You shouldn't be able to bottom them.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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