Date:         Sat, 1 Apr 1995 20:52:01 -0800 (PST)
Sender:       Vanagon Mailing List <vanagon@vanagon.com>
From:         David Schwarze <schwarze@io.nosc.mil>
Subject:      Re: Whistle sound--Gland nut??f

Jon Peters/UB Networks writes:
> 
> I am NOT an expert with Mustangs, but I do know that the T/O bearing is NOT 
> SPINNING in a TI/TII configuration, UNTIL the clutch pedal is depressed...  

Ideally, no.  In actuality (at least in the Mustang) there is nothing that
pulls the t/o bearing off of the pressure plate when the pedal is not
depressed, and it tends to rest against the pressure plate and turn, without
being under any real load.

> When the clutch pedal is depressed, it puts tension on the clutch cable, which
> in turn, pulls the lever attached to the T/O bearing forks, which, in turn, 
> presses the T/O bearing against the pressure plate ring (or fingers), thus 
> releasing the clutch disk....  When the clutch is disengaged in a TI/TII, the 
> T/O bearing does not spin as it is hanging on a set of forks and does not 
> engage the output shaft from the tranny.  It is entirely possible that the 
> Mustang T/O bearing spins w/ the output shaft, unlike VWs, thus creating the 
> bearing noise you had to repair in your Mustang.   

No, the t/o doesn't spin with the output shaft in the Mustang.  The two
setups are very similar.  As you know, the t/o bearing really has little 
to do with the tranny output shaft, except that the output shaft happens to
pass through it.  And I haven't repaired the Mustang yet, because I don't
feel like dropping the transmission again, having just done it a few months
ago.  

> I've been wrenching on these puppies (TI/TII) for over 25 years and have NEVER
> heard a T/O bearing make noise without having pressure applied to it via the 
> clutch pedal.  I have, however, had a number of trannies that have final 
> drive/input carrier bearing noise as they get worn.... 

Well doggone, then you must be right, and I must be wrong.  Okay everyone,
let it be known that if you hear a squeaking noise, and it goes away when
you press in the clutch, it is *not* the throwout bearing!!!  :)

Seriously Jon, I'm not trying to discredit your years of experience with
VWs, but give me a little credit too.  I'll say it one more time - "I am only
trying to suggest *another possible cause* for the noise.  I am not saying
that it is not the carrier bearing!".

-David

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David Schwarze                  '73 VW Safare Custom Camper (Da Boat)
SAIC Comsystems                 '73 Capri GT 2800 (Da Beast)
San Diego, California           '87 Mustang Lx 5.0 (Da Bruiser?  Soon...)
schwarze@nosc.mil                http://papaya.nosc.mil/~schwarze
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