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gpz "anti dive" forks
Topic Started: Jun 9 2011, 10:24 AM (2,530 Views)
bigZlittleZ
50+Member
[ *  *  * ]
Decided to replace the fork seals on one of the gpz's but ran into a bit of a probkem!
Got em part stripped eg old oil out springs removed ect but cant find anything to remove the tubes! Nothing I have fits the recessed nut in the stanchion?
Does anyone know the size? Or is it kawasaki "special tool" time
Any n all help gratefully recieved
Thanks.
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Gav
Member
[ *  * ]
bigZlittleZ
Jun 9 2011, 10:24 AM
Decided to replace the fork seals on one of the gpz's but ran into a bit of a probkem!
Got em part stripped eg old oil out springs removed ect but cant find anything to remove the tubes! Nothing I have fits the recessed nut in the stanchion?
Does anyone know the size? Or is it kawasaki "special tool" time
Any n all help gratefully recieved
Thanks.
Kawasaki forks need a special tool It like a pyramid shaped piece of steel welded onto a shaft . it is put down the fork tube and locates into a square hole
when this is in place it locks and stops it from turning when you undo the allen bolt at the base of the leg or do what i do is take the forks out and get a shop
to change the seals
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bigZlittleZ
50+Member
[ *  *  * ]
Had a feeling it'd be a special tool lol, ah well looks like i'll have to make one haha. Being a tight yorkshireman I dont like paying for something I can do myself. Although I may bite the bullet n get a shop to do it. Cheers anyway ;-)
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zzz
Member
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had a 1985 900R welded a 19mm nut on a bar about 18 inches long always worked for me

hope it helps some one
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zmax motorsports
50+Member
[ *  *  * ]
not sure about the newer forks but if it has the allen head bolt that comes up from bottem side above axle like the earlier style front ends its an easy fix. B)
put the spring back inside of fork and screw cap back on to keep tension on top side of dampner.
then use an air ratchet or good impact to remove the allen head bolt if your forks are made that way .
reverse procedure to reinstall if applicable B)
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zmax motorsports
50+Member
[ *  *  * ]
im not sure what year your gpz is but heres a picture of an older set of kz forks with allen head bolts going into bottem of dampner assembly through bottem of fork :532
part #31
Attached to this post:
Attachments: kzfork.gif (18.78 KB)
Edited by zmax motorsports, Jun 10 2011, 01:39 AM.
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bigZlittleZ
50+Member
[ *  *  * ]
bigZlittleZ
Jun 9 2011, 10:24 AM
Decided to replace the fork seals on one of the gpz's but ran into a bit of a probkem!
Got em part stripped eg old oil out springs removed ect but cant find anything to remove the tubes! Nothing I have fits the recessed nut in the stanchion?
Does anyone know the size? Or is it kawasaki "special tool" time
Any n all help gratefully recieved
Thanks.
Cheers guys, gonna crack on with it over the weekend I think. Oh n one is an 85 the other an 86.
Let ya know how I get on
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66zephyr
Newbie
[ * ]
Hi,
I am just refreshing my Z650 forks for the MOT.

In the Z650 forks the internal pattern in the damper tube is a19mm double hexagon.

To make a tool get an old 19mm / 3/4" wheelnut off a car wheel then drill it out to 1/2" and braze or weld it to a piece of 1/2" bar. If you do this both ends of the bar you can hold it with a spanner while undoing the cap screw in the base.

I have had a good search for new bushes and have sourced some in the states. I sent the stancions off to A M Philpotts for hard chroming.

Hopefully it will all go back together without leaks if I can find the right seals. Pattern seals are too thich preventing the circlip from going back in the groove.Any idea where to get the correct 7mm thick seals?

BR,
Peter
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mr z
Member Avatar
Member
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i had the same problem so i knocked a srewdriver though the old seal and fished it out then i cleaned the seat were the seal fits and fitted the new 1 but i used the old 1 to knock it into place this job was about 1 hours work ...
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cliffg
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200 MPH
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bigZlittleZ,how did it go in the end ?
Edited by cliffg, Jun 21 2011, 09:30 PM.
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toby jug
100 MPH
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zmax motorsports
Jun 10 2011, 01:33 AM
not sure about the newer forks but if it has the allen head bolt that comes up from bottem side above axle like the earlier style front ends its an easy fix. B)
put the spring back inside of fork and screw cap back on to keep tension on top side of dampner.
then use an air ratchet or good impact to remove the allen head bolt if your forks are made that way .
reverse procedure to reinstall if applicable B)
getting a mate to push down on assembled fork while snatching at allen key worked for me after some trial and error
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