KZR's Bikes of the Month for 2024

Fork tool hex size

  • scubaanders
  • Topic Author
  • Offline
  • Sustaining Member
More
18 Aug 2024 07:26 #903394 by scubaanders
Fork tool hex size was created by scubaanders
Does anybody recall what size the bolt head should be whan making a fork tool? Ie the hex size on the damping piston that is locked by the insex bolt from the bottom of the fork.

/A

Gpz750R1 1982
Gpz750A1 1983
Gpz1100A2 1984
FZ750 1985
Gpz900R -91

Please Log in or Create an account to join the conversation.

More
18 Aug 2024 08:37 #903395 by asphalt900
Replied by asphalt900 on topic Fork tool hex size
What are You working on?

Please Log in or Create an account to join the conversation.

  • scubaanders
  • Topic Author
  • Offline
  • Sustaining Member
More
18 Aug 2024 10:55 #903400 by scubaanders
Replied by scubaanders on topic Fork tool hex size
Currently an Gpz900r -89 but it's the same size as on my Gpz750 -82, Gpz750 -83 and Gpz1100 -84.

Back in the eighties I made a copy of the Kawasaki tool but I can't for my life remember the hex size 22 ot 24 mm is my guess.

Guess I have to dismantle a fork.

/A

Gpz750R1 1982
Gpz750A1 1983
Gpz1100A2 1984
FZ750 1985
Gpz900R -91

Please Log in or Create an account to join the conversation.

More
19 Aug 2024 03:11 #903423 by asphalt900
Replied by asphalt900 on topic Fork tool hex size
Sorry my Friend, don't have anything that new for comparison. I do my share of "conventional" forks and have never owned a "tool" to hold the damper rod. I just flip them over still assembled, this way the spring pressure keeps contact on damper to keep it from spinning. Then chuck-up an Allen socket on an air impact, they come fast and fuss free. But..perhaps you may not have access to air and other tools needed??
The following user(s) said Thank You: scubaanders

Please Log in or Create an account to join the conversation.

  • Wookie58
  • Away
  • Moderator
More
19 Aug 2024 04:04 #903429 by Wookie58
Replied by Wookie58 on topic Fork tool hex size

Currently an Gpz900r -89 but it's the same size as on my Gpz750 -82, Gpz750 -83 and Gpz1100 -84.

Back in the eighties I made a copy of the Kawasaki tool but I can't for my life remember the hex size 22 ot 24 mm is my guess.

Guess I have to dismantle a fork.

/A
All the tools I have seen are tapered square not hex ?? there seems to be two different sizes 

The following user(s) said Thank You: scubaanders

Please Log in or Create an account to join the conversation.

More
19 Aug 2024 05:02 #903435 by moizeau
Replied by moizeau on topic Fork tool hex size
I have the 3/8th smaller one. Did the Zeph11, ST and the GPz11 A1 with it.
The following user(s) said Thank You: Wookie58

Please Log in or Create an account to join the conversation.

More
19 Aug 2024 07:38 #903438 by Nessism
Replied by Nessism on topic Fork tool hex size
Commonly, the hex on the bottom of a spark plug socket will work.  Put a long extension into the open end of the socket, with the hex facing down.  

The following user(s) said Thank You: sf4t7, scubaanders, Wookie58

Please Log in or Create an account to join the conversation.

  • Stereordinary
  • Away
  • User
More
19 Aug 2024 09:18 #903439 by Stereordinary
Replied by Stereordinary on topic Fork tool hex size
I think you’re gonna need 24mm, cause the GPZ900 has 39mm fork tubes, which is the same as my Zephyr 550, and 24 works in mine. 

A breeze from the west.
‘90 ZR550 Zephyr

Please Log in or Create an account to join the conversation.

More
19 Aug 2024 11:15 - 19 Aug 2024 11:16 #903442 by Bloobaba
Replied by Bloobaba on topic Fork tool hex size
Je viens de vérifier un modèle de plongée ZX750. Il vous faut une clé Allen de 19 mm.

Z400F 84 (ZR400B1)
Gpz900R 84
500 H1 73
Gpz550H1
Last edit: 19 Aug 2024 11:16 by Bloobaba.

Please Log in or Create an account to join the conversation.

  • scubaanders
  • Topic Author
  • Offline
  • Sustaining Member
More
20 Aug 2024 02:42 #903464 by scubaanders
Replied by scubaanders on topic Fork tool hex size
Tks for all the inputs guys.
I was under the impression that it was a standard size, but now I know better. lately i have used the impact but i am afraid that I would strip the threads.
Will give Ness suggestion a algo for now and then ground down a t-handle to get that tapered shape.

Tks guys

/A

Gpz750R1 1982
Gpz750A1 1983
Gpz1100A2 1984
FZ750 1985
Gpz900R -91
The following user(s) said Thank You: Wookie58

Please Log in or Create an account to join the conversation.

  • KZQ
  • Offline
  • Administrator
  • Walking Behind the Corn May Not Be All That!
More
21 Aug 2024 07:26 #903510 by KZQ
Replied by KZQ on topic Fork tool hex size

Does anybody recall what size the bolt head should be whan making a fork tool? Ie the hex size on the damping piston that is locked by the insex bolt from the bottom of the fork.

/A
 
Hello Scubaanders,
I've had problems with removing damper rods as I'm sure most of you have. Not done correctly the fork slider can be damaged. I always try to see if a hex will do the job before I break out the tapered universal tool. I have had success with a 22mm hex on my KZ1100 Shaft and with a 24 mm hex on my KZ1300.
Regards
Bill 

www.KZ1300.com
Riders:
1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Valkyrie, 2009 Yamaha Roadliner S. 1983 GL 1100
Projects:
1985 ZN1300
The following user(s) said Thank You: scubaanders

Please Log in or Create an account to join the conversation.

More
21 Aug 2024 08:11 #903512 by H1Vindicator
Replied by H1Vindicator on topic Fork tool hex size


All the tools I have seen are tapered square not hex ?? there seems to be two different sizes 

special tools like that were used on the earlier forks because they didn't have a hex shape that a hex-tool would fit into, and Kawasaki seems to have continued listing the tapered style for later models even though they had an inner cylinder with a hex shape. for example the 750-4 fsm lists a tapered tool but the inner cylinder is 19mm on the 82 750-Ltd and other 80s manuals are the same even though a hex tool would work.

Please Log in or Create an account to join the conversation.

Powered by Kunena Forum

If you like KZR Please consider making a donation. Thank you.

KZRider is free, but not without cost.

Please consider chipping in a few bucks to help cover the cost of running the KZR servers.