clutch pack steel plate indent

smiffyraf1 · 06-09-2018, 08:19 PM

guys.
as its a horrible day thought id finally get round to changing my clutch friction pack as is not knackered but has definitely got louder of late. while removing i noticed the steel plates had an indent on each one on the outside edge. these didnt seem to be lined up with anything i.e. the master lug and on looking in the workshop manual can find no mention of them.
It all seems to work fine does anyone know anything about them?

Mr Gazza · 06-09-2018, 09:55 PM

They were designed to perpetuate internet forums..

vince53 · 06-09-2018, 11:00 PM

iv done the same in the past and found the same but couldn't find why ? I guessed it was something to do with balance ? so lined up with marked spring lug on basket ? just a guess someone here will know and say * )

Dukedesmo · 07-09-2018, 08:50 AM

I suspect they are to make it easier to pull them out. I replace them staggered, around 3 or 4 teeth apart so that they're evenly distributed around the clutch.

If they were all together it would make a 'light spot' that would put the clutch pack out of balance, not sure if it would be enough to cause any problems but considering that the clutch runs at around half engine speed (up to 5k rpm-ish) it might?

Kato · 07-09-2018, 02:02 PM

Quote:

Originally Posted by vince53

iv done the same in the past and found the same but couldn't find why ? I guessed it was something to do with balance ? so lined up with marked spring lug on basket ? just a guess someone here will know and say * )

Is the correct answer...

smiffyraf1 · 07-09-2018, 02:11 PM

Quote:

Originally Posted by Dukedesmo

I suspect they are to make it easier to pull them out. I replace them staggered, around 3 or 4 teeth apart so that they're evenly distributed around the clutch.

If they were all together it would make a 'light spot' that would put the clutch pack out of balance, not sure if it would be enough to cause any problems but considering that the clutch runs at around half engine speed (up to 5k rpm-ish) it might?

this is what i did as i thought the same. the pack would be imbalanced if all together. as long as they dont attempt to escape ill leave them be.

06-09-2018, 08:19 PM	#1
smiffyraf1 Silver Member Join Date: Sep 2010 Location: Lincoln Bike: M1000ie Posts: 594	clutch pack steel plate indent guys. as its a horrible day thought id finally get round to changing my clutch friction pack as is not knackered but has definitely got louder of late. while removing i noticed the steel plates had an indent on each one on the outside edge. these didnt seem to be lined up with anything i.e. the master lug and on looking in the workshop manual can find no mention of them. It all seems to work fine does anyone know anything about them?

06-09-2018, 09:55 PM	#2
Mr Gazza Lord of the Rings Join Date: May 2013 Location: Norwich Bike: M900sie Posts: 5,792	They were designed to perpetuate internet forums.. __________________

07-09-2018, 08:50 AM	#4
Dukedesmo Registered User Join Date: Sep 2010 Location: Leics Bike: M900 Posts: 2,838	I suspect they are to make it easier to pull them out. I replace them staggered, around 3 or 4 teeth apart so that they're evenly distributed around the clutch. If they were all together it would make a 'light spot' that would put the clutch pack out of balance, not sure if it would be enough to cause any problems but considering that the clutch runs at around half engine speed (up to 5k rpm-ish) it might? __________________ M900, 916, LeMans II.

06-09-2018, 11:00 PM	#3
vince53 Registered User Join Date: Sep 2018 Location: taunton Bike: M1100s Posts: 41	iv done the same in the past and found the same but couldn't find why ? I guessed it was something to do with balance ? so lined up with marked spring lug on basket ? just a guess someone here will know and say * )