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Re: Mandatory TR6 diff rebuild?

To: "Randall Young" <randallyoung@earthlink.net>, "Triumphs (E-mail)" <triumphs@autox.team.net>
Subject: Re: Mandatory TR6 diff rebuild?
From: "Richard Taylor" <rgt3000@one.net>
Date: Fri, 14 May 1999 07:33:56 -0400charset="iso-8859-1"
References: <01BE9D7F.CEF2D220.randallyoung@earthlink.net>
Listers

With all this talk about pinion torque, I think I saw something about
soaking the seal prior to installing a new one.  Is this correct and if so
what type of oil do you soak it in?

Thanks in advance

Rick
TR4A CT57505L
----- Original Message -----
From: Randall Young <randallyoung@earthlink.net>
To: Triumphs (E-mail) <triumphs@autox.team.net>
Sent: Thursday, May 13, 1999 9:59 PM
Subject: RE: Mandatory TR6 diff rebuild?


>
> Pete :
>
> Something is wrong with the advice you got from TRF.  Even if you just put
> the nut back on finger tight, you'll drive for a long time before hurting
> anything.  Plus, Moss lists the R&P in their April 99 catalog, so new ones
> were available at least last month.
> The only thing I can think of that would cause damage "backing out of the
> driveway" is trying to set the preload to 85 ft-lb, and even then only the
> bearings will fail.  You should notice the problem long before the R&P are
> damaged.
>
> Randall
>
> On Thursday, May 13, 1999 3:43 PM, Pete & Aprille Chadwell
> [SMTP:dynamic@transport.com] wrote:
> >
> > Hi gang.
> >
> > Not done with the differential questions yet.  Earlier today I talked on
> > the phone with tech support at TRF, spoke to Dave.  I was asking him
> about
> > my little
> > quandary regarding the pinion nut torque and preload and how I should
put
> > it back together.  Well, according to Dave, the only GOOD option I have
> at
> > this point is to rebuild the whole thing.  Here's what he told me, and
> you
> > all can interject your own contrary opinions, if any, as you see fit:
> > First of all, and most importantly, he says there's no such thing as a
> new
> > crownwheel & pinion.  They aren't made.  Not available.  Therefore
> risking
> > damage to a currently intact crownwheel and pinion is not advisable.
His
> > suggestion is that whether I torque the nut to the torque specified in
> the
> > Bentley manual, (90 to 120 foot-pounds) or whether I put it back near as
> I
> > can to where it was before I removed the locking wire and nut, I run a
> > significant chance of severely shortening the life of the diff.  By
> > severely, I mean that-in his words-the diff may very well come apart "as
> I
> > back out of the driveway."  He says I would run that risk EVEN IF I had
> > carefully marked the nut and pinion PRIOR to removing the nut, and then
> > later returned the nut to its previous position.
> >
> > Then I called BPNW, and Leighton there said that all their rebuilt diffs
> > come with NEW ring & pinions.  That's exactly OPPOSITE of what
understood
> > TRF was telling me.
> >
> > Please give me some more input here... I found it very hard to believe
> that
> > the ring & pinions are not available new, yet that's what I understood
> Dave
> > at TRF to say.
> >
> > Pete Chadwell
> > 1973 TR6
> >
> >
> >
>


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