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Re: [Alpines] Release bearing fork

To: awtiger@cox.net, alpines@autox.team.net
Subject: Re: [Alpines] Release bearing fork
From: canisdog@aol.com
Date: Sat, 12 Jan 2008 09:18:51 -0500
 Andy,

I have a box full of different height's of pedestal's and forks.? If you can 
send me the demmensions of the one you need I can mail it.? You pick up the 
postage.



Paul



 






-----Original Message-----

From: awtiger@cox.net

To: alpines@autox.team.net

Sent: Fri, 11 Jan 2008 9:27 pm

Subject: [Alpines] Release bearing fork



  
    Hey, guys:    Here I go again...working on my Series I vintage racer.  I 
hate it when I do  that!!!!    I've run into yet another situation where it 
appears that parts from different  Series of Alpines have been combined to make 
one car run...my car.  If any of  you remember, I was having 
clutch/transmission/shifting issues.  We pulled it  all down and have 
discovered some mildly weak parts in the transmission that  we intend to 
replace.  I think we've about got the transmission problem  licked.    Today, 
we pulled the clutch out to have a look.  To make a long story short,  we're 
evidently running a Series II/III 9-spring pressure plate with an 8 1/2"  disc. 
 The problem is that the release bearing fork (called a "clutch  withdrawal 
lever" in the Rootes factory parts manual)  appears to be too tall;  i.e., it 
has been contacting the pressure plate.  So much so, in fact, that  not only is 
the pressure plate marked up by the contact, but it has worn a  groove in both 
the fork and the aluminum stand that the fork pins to on the  bell housing.  
After looking at the factory parts manual, it is obvious that  there were 
several different designs for this arm.  The first three designs,  however, 
were superceded by one design that was in production up to the B941  cars 
(Series I through early Series IV), with the next design being used in  the 
B941 cars and up (late Series IV and Series V).  The problem is that the  
pressure plates for the earlier cars up to but not including the late Series  
IVs are taller than their late Series IV and Series V counterparts.  So, it  
would obviously follow that the earlier cars used a shorter release bearing  
fork, while the later cars used a taller release bearing fork (the reason, of  
course, is the issue with clearance for the pressure plate and the relative  
distance from the release bearing to the pressure plate).    I evidently have  
an incorrect matchup of parts; I have the taller Series II/III 9-spring  
pressure plate AND the tall (later) release bearing fork.  Hence, the  
clearance issue.    Now that I just wrote a book, does anyone out there have an 
early fork and  fork mounting bracket that they could part with to help me out? 
 I really want  to run the earlier clutch as it is supposedly stronger, not to 
mention bigger,  than the later unit.  But, that is going to require me to find 
the correct  release bearing fork and bracket.  Is there anyone out there who 
can help me  with this?    As a bit of assistance, if anyone out there has the 
Rootes factory parts  manual for the Series I-IV, the parts I'm talking about 
show up on Plates A &  B of Section F, with the plate reference numbers for the 
fork being A55, B56,  B57 & B58.  The mounting brackets for the forks are 
listed with the plate  reference numbers of A61, B62 & B63.    If anyone out 
there can help me out, please contact me asap.  Maybe we can  compare notes and 
take a few measurements to make sure it is what I need.  Thanks very much for 
the any help!!!!    Andy Walker  Edmond, OK  
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