[FC] More ? for the masters; 90 weight leak

[Rad Davis]

While assisting Charlie O'Hare with a recent clutch replacement in his '65 
Greenbrier, I noted that the replacement diff snout split ring a vendor had 
sent was actually pressed with the hole out of center relative to the 
outside diameter.  I looked carefully at it and recommended that Charlie 
use the old (un-worn, in this case) split ring.  The thick part of the ring 
looked like it might rub too easily against the input shaft, possibly 
scoring it.

I suppose GM's vendor just didn't do a lot of QC on what was, after all, a 
non-structural part.

My reason for mentioning this is that automatically replacing the split 
ring may not always be a good idea.  In this case, at least, the old part 
was superior.  Perhaps better advice would be to examine the split ring for 
wear or damage, clean as appropriate, and reinstall if OK.

-Rad Davis

At 05:31 AM 11/8/2005 -1100, Larry Forman wrote:
>To Jim's list, I would add to always replace, or at least inspect, the 
>lockwasher holding in the transmission shaft seal.  This lockwasher does 
>not really hold in the seal, since the friction of the snout to the seal 
>does that, but the lockwasher serves to minimize the transmission shaft 
>movement.  If the internal diameter of the lockwasher has been worn, then 
>the transmission input shaft can whip and tear up the input seal.  Often 
>you can see that the inside diameter of the lockwasher has been worn and 
>even has a slight lip on it from the metal being slowly but consistently 
>displaced.  This creates an excessively large diameter.  The lockwasher is 
>inexpensive to replace.
>
>-- Larry
>----- Original Message -----
>From: "James Davis" <jld at wk.net>
>To: corvanatics at corvair.org
>Subject: Re: [FC] More ? for the masters; 90 weight leak
>Date: Tue, 08 Nov 2005 09:09:38 -0600
>
> >
> > Sounds like you have a leaking clutch input shaft seal.  The seal
> > is located in the clutch throughout bearing shaft. This is not an
> > uncommon affliction.  Remember the transmission input shaft goes
> > from the clutch disk to the very front of the transmission (it is
> > approximately 24 inches long).  Diff/transmission oil is
> > centrifugally thrown on the clutch disk.  Oil coated clutch disk
> > grab when cold and slip when hot.  The newer machined clutch
> > throughout bearing shafts have provisions got two input seals in
> > tandem to hopefully alleviate the sort of problem you are
> > experiencing.
> > Just drop the engine and transalxe, split the assembly at the bell
> > housing, replace the clutch disk, input shaft bearing, clutch
> > throughout bearing, and clutch input shaft seal.  Reassemble and
> > reinstall.
> > Jim Davis.
>
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