[ROVERNET - UK] P4 105S Clutch

Mon Dec 6 23:06:54 GMT 2004

Dear Rovernetters,

Developments: 
The flywheel grinders have replaced the dowels at
their cost. They haven't drilled in from behind so I
am quite happy;
I looked at a Rover 90 withdrawal assembly and found
its bearing had ten balls whereas the replacement has
nine, so the comments about quality of new bearings
rings true. I think I shall leave well enough alone.

Thanks to all who have taken the time to respond to my
queries. This internet thingy is a powerful tool for
we who have esoteric interests.

Cheers

Peter B

--- Fritz Rauschenberg <wfritz at mindspring.com> wrote:

> 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
> 
=== message truncated ===

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 