[Fot] Fwd: TR6 inner shaft bearing

Tue Apr 14 10:24:29 MDT 2020

I have done 3 of these differentials in the past and the only reason I have
found to separate the hub from the shaft is to change the seal. The
bearings are usually good.
In all cases I had to resort to a 50 ton or 100,000lb press using a large
bearing splitter against the axle flange. I keep a trash can under  the
press to collect the ejected parts as the trash is a good cushion. When the
parts separate there is usually an explosive bang when it comes apart. I
did these on an OTC 50 ton press. I plan on trying this out again now on my
vintage (say old) Carolina 50 ton press.

The first one of these I did back in the mid 90's I brought it into our
Development Shop (big 3 engineering) and we tried to separate one. The
flame wrench didn't help and despite the press being modern and the
hydraulics pumped to the ram it wasn't enough to separate it. It wasn't
close to a 50 ton press.

On Tue, Apr 14, 2020 at 11:08 AM fubog1 via Fot <fot at autox.team.net> wrote:

> Steve I agree with all of your points, I wasn't advocating anything less
> as a satisfactory repair, just relating everyday real-world experience.
> A crack check should always be SOP on the axles/flanges/hubs whenever
> they're disassembled.
> Glen
>
>
> -----Original Message-----
> To: 'fubog1' <fubog1 at aol.com>; van.mulders.marcel at telenet.be
> Cc: fot at autox.team.net
> Sent: Tue, Apr 14, 2020 10:57 am
> Subject: RE: [Fot] Fwd: TR6 inner shaft bearing
>
> Guys,
> I have rebuilt over a hundred of these over the years and can tell you
> that some of them will require up to 40 tons of pressure on a good press
> and good fitting press plates.  Please do not heat these up and quench or
> anything of the sort, same with the stock wheel hubs.  I have come across
> many flanges both inner and outer that had cracks running along the keyway
> slot and evidence of severe heating.  You are playing with disaster if
> these should completely fail under a load.  And as stated if the small step
> on the shaft has been removed by some hack get a new one or again disaster
> can happen.
>
> There is only one way to fix these parts and that is the right way…..  I
> have been sickened by some of the means and ways dispersed..
>
> Steve Yott
>
> *From:* Fot <fot-bounces at autox.team.net> *On Behalf Of *fubog1 via Fot
> *Sent:* Tuesday, April 14, 2020 7:58 AM
> *To:* van.mulders.marcel at telenet.be
> *Cc:* fot at autox.team.net
> *Subject:* Re: [Fot] Fwd: TR6 inner shaft bearing
>
> Yeah when a simple straightforward seal replacement turns into a nightmare
> job due to a stuck flange...
> Again, it's not the correct/preferred method, but considering that there
> isn't normally any significant axial load on it, assembled with a little
> loctite green will keep the bearing in place, and it'll get the job done in
> those cases where a big $$ axle & flange are at risk of being damaged.
> They usually come apart OK but every now & then I get one that won't.
> If the press doesn't pop it, sometimes a heat flange to cherry & quench
> will, but I'm sure that doesn't do any good for the metallurgy...
> Glen.
>
>
> -----Original Message-----
> To: fubog1 <fubog1 at aol.com>
> Cc: fot <fot at autox.team.net>
> Sent: Tue, Apr 14, 2020 8:40 am
> Subject: Re: [Fot] Fwd: TR6 inner shaft bearing
> Hi Glen,
> that is explaining the issue. It seems that lot's of these bearings have
> been replaced in that way by now!
> Marcel
>
> ------------------------------
> *Van: *"fot" <fot at autox.team.net>
> *Aan: *"fot" <fot at autox.team.net>
> *Verzonden: *Dinsdag 14 april 2020 13:56:06
> *Onderwerp: *Re: [Fot] Fwd:  TR6 inner shaft bearing
>
> There's a slight step on the shaft that prevents inward movement of the
> bearing, relative to the shaft; if your shaft slid out, that step has been
> removed.
> I've run into this several times, it's done in a last-ditch effort to
> change the bearing when the hub can't be removed.
> Glen
> Note... I'm not advocating this as a correct repair procedure
>
> -----Original Message-----
> From: van.mulders.marcel--- via Fot <fot at autox.team.net>
> To: fot <fot at autox.team.net>
> Sent: Tue, Apr 14, 2020 5:48 am
> Subject: [Fot] Fwd: TR6 inner shaft bearing
>
>
> ------------------------------
> *Van: *"van mulders marcel" <van.mulders.marcel at telenet.be>
> *Aan: *"Chip Collingwood" <chip at theukmotorsports.com>
> *Verzonden: *Dinsdag 14 april 2020 09:18:41
> *Onderwerp: *Re: [Fot] TR6 inner shaft bearing
>
> I discovered a couple of times that the bearing did move on the shaft by
> as much as 1/2". As a result the shaft had moved outwards by that amount.
> Is that common? Is there a simple fix?
> Marcel
> *Aan: *"Jay Galbreath" <tr4jay at gmail.com>
> *Cc: *"fot" <fot at autox.team.net>
> *Verzonden: *Zondag 12 april 2020 01:55:19
> *Onderwerp: *Re: [Fot] TR6 inner shaft bearing
>
> the flange fits on a tapered shaft which is the bear...the bearing doesn't
> take much at all...if you do happen to find a shop that can get it apart
> for you make sure you make a note of the bearing position on the
> shaft...take a measurement before you press it off for reference. I use a
> 50 ton press to get the flange apart...usually takes at least 20
> tons...sometimes more...always wrap a towel around the assembly...dont
> think I've ever had one i couldn't get apart.
>
> On Sat, Apr 11, 2020, 7:49 PM Jay Galbreath via Fot <fot at autox.team.net>
> wrote:
>
> Hah!  I just attempted that this week. The two stub shafts would NOT press
> out even with 10 tons and red hot from my firewrench. Scott Harper at Team
> Triumph came to my rescue and went through his stash to find a couple that
> did press out for him. So give him a call if you can't break them apart.
> Good Luck!  Jay     WPTA
>
> On Sat, Apr 11, 2020 at 6:22 PM Michael Deweerd via Fot <
> fot at autox.team.net> wrote:
>
> Amici
> How much force is typically required to separate the driving flange from
> the shaft
>
> --
> *Mike Deweerd*
> _______________________________________________
> fot at autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/fot/tr4jay@gmail.com
>
> _______________________________________________
> fot at autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/fot/chip@theukmotorsports.com
>
>
> _______________________________________________
> fot at autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/fot/van.mulders.marcel@telenet.be
>
> _______________________________________________
> fot at autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/fot/fubog1@aol.com
>
>
> _______________________________________________
> fot at autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/fot/van.mulders.marcel@telenet.be
> _______________________________________________
> fot at autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage <http://www.team.net/pipermail/fotUnsubscribe/Manage>:
> http://autox.team.net/mailman/options/fot/gaf3@charter.net
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/fot/attachments/20200414/6d05720d/attachment-0003.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 2574955 bytes
Desc: not available
URL: <http://autox.team.net/pipermail/fot/attachments/20200414/6d05720d/attachment-0003.jpg>