GK76 clutch friction plate's
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wullie3xv9
- Settled in member
- Posts: 122
- Joined: Mon Sep 16, 2013 4:12 pm
- Bike owned: GK76a GSXR400R & TZR250RS
- Location: Fife, Scotland
GK76 clutch friction plate's
Hi folks. 
Can anyone tell me what the minimum thickness is for the clutch friction plates on GK76a motors. I'm going to check them out once I have the info. 
I know that it's not recommended to re-use the pressure plate's 5 bolts so can you replace them with any old suitable bolt or does it have to be 5 new OEM bolts?? Thanks in advance.
Can anyone tell me what the minimum thickness is for the clutch friction plates on GK76a motors. I'm going to check them out once I have the info. I know that it's not recommended to re-use the pressure plate's 5 bolts so can you replace them with any old suitable bolt or does it have to be 5 new OEM bolts?? Thanks in advance.
Last edited by wullie3xv9 on Wed Jan 15, 2014 8:52 am, edited 1 time in total.
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dobbslc
- NWAA Supporter
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- Joined: Fri May 02, 2008 8:06 pm
- Bike owned: 3TJRRSP TRX850 XV750 cafe
- Location: Hertfordshire
Re: GK76 clutch friction plate's
I don't think I've ever replaced the bolts in a clutch before...
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wullie3xv9
- Settled in member
- Posts: 122
- Joined: Mon Sep 16, 2013 4:12 pm
- Bike owned: GK76a GSXR400R & TZR250RS
- Location: Fife, Scotland
Re: GK76 clutch friction plate's
Neither have I but I'm sure that I've read on a couple of GK76 threads that it's not a good idea to re-use the pressure plate bolts as the heads have a habbit of shearing when torqued up !!
Mind you, that could be because they were overtightened by hand rather than using a suitabel torque wrench .....
I always use a little blob of threadlock when re-fitting any fasteners as insurance that nothing will vibrate loose.
Mind you, that could be because they were overtightened by hand rather than using a suitabel torque wrench .....
I always use a little blob of threadlock when re-fitting any fasteners as insurance that nothing will vibrate loose.
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wullie3xv9
- Settled in member
- Posts: 122
- Joined: Mon Sep 16, 2013 4:12 pm
- Bike owned: GK76a GSXR400R & TZR250RS
- Location: Fife, Scotland
Re: GK76 clutch friction plate's
I had a look through the GK73 service manual this afternoon & found the service limits I'm after for that models clutch assembly.
Service limit of friction plates = 2.60 mm's. Service limit for clutch springs = 31.0 mm's.
Can anyone confirm that the above limits also apply to GK76 clutches as both models engines probably share the same components? ( I've checked all my clutch spring's free length & they're all bang on the 31 mm limit ).
Thanks in advance.
Wullie.
Edit :- Done a bit more detective work. GK73 & GK76 clutch friction plates have differing part numbers, but both models engines use the same clutch springs so it looks like I need to order a fresh set of clutch springs.
Service limit of friction plates = 2.60 mm's. Service limit for clutch springs = 31.0 mm's.
Can anyone confirm that the above limits also apply to GK76 clutches as both models engines probably share the same components? ( I've checked all my clutch spring's free length & they're all bang on the 31 mm limit ).
Thanks in advance.
Wullie.
Edit :- Done a bit more detective work. GK73 & GK76 clutch friction plates have differing part numbers, but both models engines use the same clutch springs so it looks like I need to order a fresh set of clutch springs.