EBC clutch kit failure

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Kevh1070
Posts: 14
Joined: Mon Apr 13, 2015 6:57 am
My Bike: Zxr 400 l3

EBC clutch kit failure

Post by Kevh1070 »

Need help 🙈 please, replaced clutch following rebuild from g/box fault. Fitted a EBC srk series & went to take it for mot test, clutch failed after 5 miles due to overheating & failed in disengaged state I.e. as if clutch lever was pulled back to bars. Spoke with EBC it appears that spring kit supplied in kit is totally incorrect for H & L models they list a “csk006” spring kit for both models on closer inspection this makes the Csk006 springs 10mm & 3mm longer for H & L models respectively along with far higher spring rate basis.
Stripped clutch after recovery & replaced plates with foc EBC ck series friction plates, clutch still stuck in disengaged state on reassembly, also now have a binding problem with clutch basket when in neutral & 2-3mm play from basket to input shaft in a horizontal axis. When first reassembled there was no excessive play on basket.
Would greatly appreciate any help, thank you
Kevh1070
Posts: 14
Joined: Mon Apr 13, 2015 6:57 am
My Bike: Zxr 400 l3

Re: EBC clutch kit failure

Post by Kevh1070 »

So damage sustained from clutch kit failure is as follows :-

1, clutch lever arm rendered useless as pivot point worn way beyond tolerances & offset pivot point on vertical axis of lever arm.
2, clutch pressure plate spring steel section weakened beyond useable tolerance, unabled to determine wether pressure plate warped during failure.
3, central hub for steels plates warped in vicinity of spring securing thread areas.
4, outer basket warped & showing signs of stress fractures along machining just above fixed gear cog.

This all came about from incorrect springs, oversized stack height on frictions & steels.
Lesson learned the expensive way & with a lot of help from ebc sales/support on sourcing replacement parts and technical info basis.
Many thanks to them on that alone.
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