fork tube removal//help needed

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17 Jul 2011 00:35 #463262 by MkII
fork tube removal//help needed was created by MkII
any tips on how to disassemble the fork assembly?? I see a special tool is needed to hold the piston while the allen bolt on the fork bottom is backed out....any home made alternatives to accomplish this?? thank you.

nothing found in forum search on this I could find.

1977A1 current project: 1075, Web cams, VM29's Cavanaugh massaged head, Z1 crank


1979A3A Parked in 1986 left in shed

Phx,Az

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17 Jul 2011 01:03 #463271 by MFolks
Replied by MFolks on topic fork tube removal//help needed
I've read about owners getting a broom handle/long 1" dowel and putting a four sided taper with a flat end(maybe 1/4" to 3/8" in size) to fit the end of the dampening rod.

Try www.z1enterprises.com and see if they can get this tool for you, my understanding this special tool would fit on the end of a 3/8" drive extension.

1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

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17 Jul 2011 01:23 - 15 Feb 2013 11:06 #463275 by martin_csr
Replied by martin_csr on topic -
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Last edit: 15 Feb 2013 11:06 by martin_csr.

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17 Jul 2011 02:47 - 17 Jul 2011 02:48 #463290 by Cuff
Replied by Cuff on topic fork tube removal//help needed
3\4" bolt with two nuts. Socket and long extensions works perfect.
Last edit: 17 Jul 2011 02:48 by Cuff.

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17 Jul 2011 03:01 - 22 Jan 2013 03:12 #463292 by martin_csr
Replied by martin_csr on topic .
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Last edit: 22 Jan 2013 03:12 by martin_csr.

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17 Jul 2011 03:53 - 17 Jul 2011 03:54 #463294 by Cuff
Replied by Cuff on topic fork tube removal//help needed
Must be some sort of bolt-nut combo that works, no?
Attachments:
Last edit: 17 Jul 2011 03:54 by Cuff.

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17 Jul 2011 05:33 - 17 Jul 2011 08:59 #463296 by Mcdroid
Replied by Mcdroid on topic fork tube removal//help needed
There is some variability in the shape of the top of the inner fork tube. I have several 1977 KZ1000A1 and have also disassembled 1978 KZ1000 front ends and most had a smooth round opening on the top of the inner fork...which will not allow any device, like your picture, to work. Others may have an edged opening thus allowing a device like yours to gain some purchase (certainly the later KZ's do). The earlier Z1's had a raised area with two parallel beveled edges on the top of the inner fork tube and those can be easier to remove (and I have seen this configuration installed in a 1977 KZ1000A series front end). So, the broomstick thing may actually work as all you are attempting to do slow the inner fork (e.g. friction) from spinning as fast as the bolt inserted in the bottom of the outer fork tube. In most cases I have reverted to use of an airgun to spin the bottom bolt (this means, since I don't have compressed air in my garage, I take it to someone who does). No matter how easy it sounds, it is still a pain in the ass to do.

Michael
Victoria, Texas

1982 GPz750
1977 KZ1000A
1978 KZ1000A
1982 GPz1100
1975 Z2A

Last edit: 17 Jul 2011 08:59 by Mcdroid. Reason: spelling

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17 Jul 2011 10:23 #463315 by andy9802gt
Replied by andy9802gt on topic fork tube removal//help needed
Clamp the tube in a vise, compress the fork leg, and hit it with an impact, it'll come right out

'78 KZ1075 LTD
stage 1 head by Larry Cavanaugh
race built crank by John Pearson
Mikuni rs34's
k410 cams
back cut tranny
8" over D&G swinger
proving once again that age and treachery is better than youth and enthusiasm

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17 Jul 2011 10:58 - 22 Jan 2013 03:12 #463318 by martin_csr
Replied by martin_csr on topic .
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Last edit: 22 Jan 2013 03:12 by martin_csr.

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17 Jul 2011 11:41 #463328 by MkII
Replied by MkII on topic fork tube removal//help needed
thanks fellas, I'll let you know if and when I get this handled and what I used.

1977A1 current project: 1075, Web cams, VM29's Cavanaugh massaged head, Z1 crank


1979A3A Parked in 1986 left in shed

Phx,Az

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17 Jul 2011 12:27 #463336 by 650ed
Replied by 650ed on topic fork tube removal//help needed
If your fork cylinder top is round as shown in the pic, you can make a tool by attaching a rod to a large bolt (as a handle) and supergluing a rubber vacuum cap to the business end as shown. I sleeved the rod with a piece of clear tubing to protect the fork innards. Have someone jam the rod into the top of the fork cylinder while you use an impact wrench on the cylinder bolt. It should come out. Ed

Attachment ForkCylinderGroup2.JPG not found


1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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17 Jul 2011 13:40 #463345 by Mcdroid
Replied by Mcdroid on topic fork tube removal//help needed

650ed wrote: If your fork cylinder top is round as shown in the pic, you can make a tool by attaching a rod to a large bolt (as a handle) and supergluing a rubber vacuum cap to the business end as shown. I sleeved the rod with a piece of clear tubing to protect the fork innards. Have someone jam the rod into the top of the fork cylinder while you use an impact wrench on the cylinder bolt. It should come out. Ed

Attachment ForkCylinderGroup2.JPG not found


Great idea! I had tried something similar but still couldn't stop the inner fork from spinning...yours might actually work. :)

Michael
Victoria, Texas

1982 GPz750
1977 KZ1000A
1978 KZ1000A
1982 GPz1100
1975 Z2A

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