[ROVERNET - UK] P4 105S Clutch

Sun Dec 5 02:42:43 GMT 2004

Hi Peter,

You will need to replace the dowels, and this can be difficult.  there are
two methods.  One is called hydralic and involves the use of a roller bearing,
drill and heated wax or oil.  The other involves drilling through the flywheel
with the smallest drill, drilling baco with a larger drill into the cavity
behind the dowel and using a cut down alen key to drift the dowel out.  If
you need more suggestions on this please feel free to reply.

My recolection is that the gearbos and clutches on the landrover and the
P4 were very similar if not identical.  I agree that you need not worry about
about the predal pressure from seemingly different springs.  though i do
recall that heavier springs were available at one stage but these would be
clearly identified as such.  From another perspective, it is beter to get
the heaviest springs that you can conveniantly use in the car, especially
if you contemplate towing, or towing other broken down cars eg Jaguar.  Let
us know how you proceed.

Cheers Roger     
>-- 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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>
>
>
>		
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