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From: Rich B on 24 Nov 2008 13:02 TOG(a)Toil typed: > On 24 Nov, 14:34, Champ <n...(a)champ.org.uk> wrote: >> On Sun, 23 Nov 2008 09:10:15 +0000, totallydeadmail...(a)yahoo.co.uk >> >> (The Older Gentleman) wrote: >>> The very important thing is to remember to soak the friction plates >>> in clean engine oil for an hour or two before you instal them. >> >> Really? Why? I've never heard this before. > > I thought it was common knowledge. It allows them to soak up the oil - > remember they're essentially fibre, and if they're totally dry, the > clutch may grab. > > That said, putting them in dry and then running the engine for a > short while will probably have the same effect. Cork plates, definitely. I can't see why modern fibre plates should be, but then it's recommended practice for Land Rover Railko bushes as well, and they would seem to be impervious material. Perhaps it's magic. -- Rich B 1971 S2a 1995 XT600E 2003 ST1300 Pan European Oh, and a Ford Take out the obvious to email me.
From: Pip Luscher on 24 Nov 2008 13:31 On Mon, 24 Nov 2008 14:34:23 +0000, Champ <news(a)champ.org.uk> wrote: >On Sun, 23 Nov 2008 09:10:15 +0000, totallydeadmailbox(a)yahoo.co.uk >(The Older Gentleman) wrote: > >>The very important thing is to remember to soak the friction plates in >>clean engine oil for an hour or two before you instal them. > >Really? Why? I've never heard this before. I've read it somewhere as part of assembly instructions, it might have been instructions that came with a set of plates and I've heard of others doing it. I'm not absolutely certain why it was considered necessary, though I have a vague idea it's to do with clutch life. I suppose that if the engine were left a while before being started, you'd get plates that were half oiled and maybe you could get a juddery clutch action, but that's only a guess. -- -Pip
From: Pete Fisher on 24 Nov 2008 13:37 In communiqu� <j8sli41k8kjlu8d533q1j2drrhvg4neipv(a)4ax.com>, Pip Luscher <pluscher(a)live.invalid.co.uk> cast forth these pearls of wisdom >On Mon, 24 Nov 2008 14:34:23 +0000, Champ <news(a)champ.org.uk> wrote: > >>On Sun, 23 Nov 2008 09:10:15 +0000, totallydeadmailbox(a)yahoo.co.uk >>(The Older Gentleman) wrote: >> >>>The very important thing is to remember to soak the friction plates in >>>clean engine oil for an hour or two before you instal them. >> >>Really? Why? I've never heard this before. > >I've read it somewhere as part of assembly instructions, it might have >been instructions that came with a set of plates and I've heard of >others doing it. > >I'm not absolutely certain why it was considered necessary, though I >have a vague idea it's to do with clutch life. I suppose that if the >engine were left a while before being started, you'd get plates that >were half oiled and maybe you could get a juddery clutch action, but >that's only a guess. > Oh, yes, oil the surfaces of them by all means, but I don't understand the need for a prolonged soak of modern friction materials. I suppose if you had done the job as part of an engine out rebuild it might be important, but as a fix the clutch then immediately see if your fixing has worked job I can't see the need. -- +----------------------------------------------------------------+ | Pete Fisher at Home: Peter(a)ps-fisher.demon.co.uk | | Voxan Roadster Gilera Nordwest * 2 Yamaha WR250Z | | Gilera GFR * 2 Moto Morini 2C/375 Morini 350 "Forgotten Error" | +----------------------------------------------------------------+
From: sweller on 24 Nov 2008 15:27 Champ wrote: > > The very important thing is to remember to soak the friction plates in > > clean engine oil for an hour or two before you instal them. > > Really? Why? I've never heard this before. Neither have I and I've never done it. When we (read: Mike) changed the clutch on the race bike they were just put in. -- Simon
From: Pip Luscher on 24 Nov 2008 16:37
On Mon, 24 Nov 2008 18:37:08 +0000, Pete Fisher <Peter(a)ps-fisher.demon.co.uk> wrote: >Oh, yes, oil the surfaces of them by all means, but I don't understand >the need for a prolonged soak of modern friction materials. I suppose if >you had done the job as part of an engine out rebuild it might be >important, but as a fix the clutch then immediately see if your fixing >has worked job I can't see the need. Oh, only for a brand-new clutch. I did Google this and someone mentioned plates swelling as the oil soaked in as a possibility. I'm sure I saw it somewhere that had some authority (to me at the time), though I suppose it could've been a HBoL. I have assembled new clutches before I heard about having to soak them and had no problems; I've also 'soaked' them for about 10 mins, again without problems, so maybe it is just a hang-over from ye olden days. -- -Pip |