Clutch Questions.

The 3 1/2 forum
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tonup69
Posts: 60
Joined: 22 Sep 2010 19:17

Clutch Questions.

Post by tonup69 »

My clutch has been dragging badly on my 3 1/2 especially when hot. Since I have not yet been inside (got the bike last August), I ordered everything from NLM that they thought I would need for an overhaul. I am clear on the plates getting warped - replacing the entire clutch pack anyway - but I am confused about the spacers they sent. I can't find any mention of spacers in the Morini parts book or service manual. Even Classic Bike's feature this month mentions the spacers as a fix for a dragging clutch - yet they don't say where the spacers go and how you determine if you need them! So, where do these shims go and how do I figure out if I need them?

Thanks in advance,

LTR
3potjohn
Posts: 1362
Joined: 02 Jun 2007 13:58
Location: Devon

Re: Clutch Questions.

Post by 3potjohn »

Hi-look at http://www.morini-riders-club.com/thebi ... lutch.html
I renewed my plates,renewed the oil seals,shimmed the clutch and removed any burrs from the clutch drum and it completely works.There is supposed to be a slightly dished metal plate which needs to go in first, some sources suggest it is the final (outermost)metal plate. Mind the clutch springs are done up but not too tightly.The whole lot should not "wobble" when viewed with the motor running.
tonup69
Posts: 60
Joined: 22 Sep 2010 19:17

Re: Clutch Questions.

Post by tonup69 »

Thanks! That's the info I was looking for. I will go attack the problem now. Hope to be on a ride soon. :mrgreen:
atreyu
Posts: 59
Joined: 02 Jun 2011 15:50
Location: Yorkshire
Location: N. Yorkshire

Re: Clutch Questions.

Post by atreyu »

Although hardly a help for your question but from racing experiences on my Ducati with a dry clutch conversion, its absolutely essential that the pressure plate lifts cleanly, any wobble and it will become snatchy.
tonup69
Posts: 60
Joined: 22 Sep 2010 19:17

Re: Clutch Questions.

Post by tonup69 »

Got into the clutch this morning. Looks like nobody has been in there in a while. The plates were caked in muck - most likely a seal leaking behind the basket. I cleaned up the basket and center, pulled the center, replaced the plastic washer and re-shimmed the clutch. Put all new plates in and new springs. Works great! Now I need to take it for a proper ride out to the forest. Will let you know how it goes.

LTR
tonup69
Posts: 60
Joined: 22 Sep 2010 19:17

Re: Clutch Questions.

Post by tonup69 »

atreyu wrote:Although hardly a help for your question but from racing experiences on my Ducati with a dry clutch conversion, its absolutely essential that the pressure plate lifts cleanly, any wobble and it will become snatchy.
Checked the outer pressure plate while running. It looks true. All springs are new and tightened down the same amount as best as I can tell. Not very loud when I pull in the clutch, so I assume it is correct.

LTR
3potjohn
Posts: 1362
Joined: 02 Jun 2007 13:58
Location: Devon

Re: Clutch Questions.

Post by 3potjohn »

Glad it's all sorted.
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