[ROVERNET - UK] P4 105S Clutch

Fritz Rauschenberg wfritz at mindspring.com
Mon Dec 6 11:25:33 GMT 2004 

HOWEVER, after just reading Ron Morey's post, I must add that his revelation as to the
quality of the new bearings would change things dramatically. Only if you can obtain
bearings of the original quality & specification is it advisable to change bearings now.
An off-spec part can wreak havoc on mating and /or adjacent parts. So make sure you can
replace with equal quality, otherwise use the old if it appears in good condition.
Sometimes, using a hypodermic needle to inject a few drops of oil under the seal can
lengthen the life of a bearing quite a bit, provided the seal isn't damaged. I would
suggest trying to locate an original equipment part the make your decision on your find.
Good hunting!

Fritz Rauschenberg.
Atlanta, GA

Fritz Rauschenberg wrote:

> Just 2 cents worth from an old engineer. Bearings wear out. Even if a bearing is not
> currently "making noise" it may well be at the sunset of it's lifespan. If the
> lubricant has dried out or if the seal is compromised to allow diret into the races
> then noises can appear quite suddenly. To replace the bearing now while you are in
> there makes all the sense in the world because it's just amatter of time.....
>
> Fritz Rauschenberg
>
> Alan FRANCIS wrote:
>
> > When I did mine I was advised by Stan Johnstone (P4 Guild guru and all round
> > 'expert' on P4 mechanics) that it the bearing wasn't making any noise then
> > don't worry about it and leave well alone. Ultimately though its down to you
> > and if you're paying for the labour on this job (I did all  mine myself)then
> > the cost of removal/replacement must far outweigh the cost of replacing the
> > bearing so it may be worth doing it in your case.
> >
> > regards
> >
> > Alan Francis (Part Viking)
> >
> > -----Original Message-----
> > From: rovernet-bounces at lyris.ccdata.com
> > [mailto:rovernet-bounces at lyris.ccdata.com]On Behalf Of iudkuy wcygiohs
> > Sent: 05 December 2004 11:28
> > To: rovernet at lyris.ccdata.com
> > Subject: RE: [ROVERNET - UK] P4 105S Clutch
> >
> > Roger
> >
> > Thanks for the advice about dowels. I asked about the
> > withdrawal bearing as the gearbox is still in the car.
> > The engine is visiting the engine rebuilders.
> >
> > Peter B
> >
> > --- rogerdm at iprimus.com.au wrote:
> >
> > > If you have a new bearing and the box is in bits it
> > > is always worth changing.
> > >  you never know how long an seemingly good bearing
> > > will last.
> > > >-- Original Message --
> > > >Date: Sat, 4 Dec 2004 14:35:57 -0800 (PST)
> > > >From: iudkuy wcygiohs <iudkuy at yahoo.com>
> > > >Subject: RE: [ROVERNET - UK] P4 105S Clutch
> > > >To: royston at jualry.fsnet.co.uk,
> > > rovernet at lyris.ccdata.com
> > > >Cc:
> > > >Reply-To: rovernet at lyris.ccdata.com
> > > >
> > > >
> > > >Alan
> > > >
> > > >Thanks for the re-assurance. I checked my flywheel
> > > and
> > > >it is indeed a two dowel type. However the kind
> > > people
> > > >who have ground the surface of the flywheel have
> > > also
> > > >ground the dowels. Is this the modern practice or
> > > will
> > > >I have to somehow extract the stubs of the dowels,
> > > now
> > > >flush with the surface, and replace them?
> > > >
> > > >Second (third?) question. The new clutch has been
> > > >supplied with a new withdrawal bearing. Is it wise
> > > to
> > > >replace this? It's a bit of a fiddly job on the P4
> > > and
> > > >the existing bearing spins freely and is not noisy.
> > > >
> > > >Cheers
> > > >
> > > >Peter B
> > > >
> > > >
> > > >--- Alan FRANCIS <royston at jualry.fsnet.co.uk>
> > > wrote:
> > > >
> > > >> Hi Peter,
> > > >>       Had a similar problem myself about 6 months
> > > ago.
> > > >> I contacted the Land
> > > >> Rover Series 2 discussion forum
> > > >> www.series2club.co.uk and got the answer
> > > >> enclosed below. With my former access to part
> > > number
> > > >> cross reference and
> > > >> suppersessions I know for a fact that some P4
> > > part
> > > >> numbers change over to
> > > >> Land Rover ones still current today.The clutches
> > > >> were in effect the same
> > > >> originally. With regard to the spring pressures I
> > > >> wouldn't worry to much. If
> > > >> the same part number was the same (and it was)
> > > then
> > > >> the pressures would have
> > > >> been the same originally. Mine had the 2 dowel
> > > >> arrangement and I would
> > > >> assume so has yours.
> > > >> regards
> > > >>
> > > >> Alan Francis (Part Viking)
> > > >>
> > > >> Re: Clutch Applications
> > > >>
> > >
> > >---------------------------------------------------------------------------
> > -
> > > >> ----
> > > >>  The Series 2/2A Land Rover uses two different
> > > >> clutches. All 2 litre engines
> > > >> (petrol and diesel), 2.25 petrol engines and
> > > early
> > > >> 2.25 diesel engines use a
> > > >> 9" coil spring type clutch (part nos 231888 for
> > > the
> > > >> cover and 275811 for the
> > > >> 2 litre plate and 540519 for the 2.25 petrol ot
> > > >> 601294 for the 2.25 diesel
> > > >> plate - I think the difference is in the damper
> > > >> springs or lining material
> > > >> and not the dimensions). Later 2.25 diesel and
> > > all
> > > >> 2.6 petrol engines use a
> > > >> 9.5" diaphragm spring clutch (part nos 571228 for
> > > >> the cover and 271712 for
> > > >> the diesel plate and 561536 for the 2.6 petrol
> > > >> plate) which was optionally
> > > >> available on the 2.25 petrol.
> > > >>
> > > >> The two types of clutch are not directly
> > > >> interchangeable due to different
> > > >> dowel arrangements in the flywheel (the coil
> > > clutch
> > > >> has two, the diaphragm
> > > >> three dowels), however this problem can be
> > > overcome.
> > > >> You should be able to
> > > >> pick whichever clutch matches you're original
> > > type
> > > >> (coil or diaphragm) and
> > > >> fit that. One important thing. Don't be tempted
> > > to
> > > >> buy the Series 3 type
> > > >> clutch cover. Its a 9.5" diaphragm unit similar
> > > to
> > > >> the 2A, but it does not
> > > >> have a boss in the centre for the release bearing
> > > >> and as a result requires
> > > >> the release bearing to be much closer to the
> > > clutch
> > > >> than with the older
> > > >> covers. The result is normally a clutch that
> > > cannot
> > > >> be released.
> > > >> Mark
> > > >>
> > > >>
> > > >>
> > > >>
> > > >> -----Original Message-----
> > > >> From: rovernet-bounces at lyris.ccdata.com
> > > >> [mailto:rovernet-bounces at lyris.ccdata.com]On
> > > Behalf
> > > >> Of iudkuy wcygiohs
> > > >> Sent: 04 December 2004 01:38
> > > >> To: rovernet at lyris.ccdata.com
> > > >> Subject: [ROVERNET - UK] P4 105S Clutch
> > > >>
> > > >>
> > > >> This is my first posting, though I have been
> > > >> following
> > > >> the topics on the Rovernet for some time. But now
> > > I
> > > >> would like some advice.
> > > >>
> > > >> I am replacing the worn clutch in my 105S and
> > > have
> > > >> obtained a replacement through a local supplier.
> > > How
> > > >> can I tell if the springs and therefore the
> > > weight
> > > >> of
> > > >> the pedal will not be greater than the original
> > > >> yellow
> > > >> spring type? I'm concerned because on the side of
> > > >> the
> > > >> box it states that it is for L/Rover and R/Rover.
> > > >>
> > > >> Peter B
> > > >>
> > > >>
> > > >>
> > > >> __________________________________
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