[Fot] Fwd: TR6 inner shaft bearing

Tue Apr 14 10:31:52 MDT 2020

I have done about a lot of differential stub axle separations and about 2
dozen IRS hub explosions. I hesitate to mention my experiences because I'm
sure there are some
risks involved but they work for me and I have no failures.

I have access to a 40 ton press at work but I have only needed it twice. On
the stub axles hubs I have had good luck with a huge three leg puller. I
loosen the nut to protect
the threads, set up the puller under tension and give it a heavy smack on
the end with a 2 lb sledge. If I'm lucky I hear a loud bang and the puller
falls to the bench.  If that doesn't
work I take it to my Harbor Freight 10 ton press and leave it under tension
while I tap the sides a bit. They have popped there too. If not, I
reinstall the stub axle in the diff and
try another smack.  That usually does the trick. I have resorted to to a
few back and forth trips to the press but I always win. I should
probably pick an old busted up diff to use as a
"tool" for this but I've been doing this as a part of the disassembly.

For the IRS hubs I have one of the hub pullers that a list member made a
run of years ago. I don't always win. I have ruined at least one vise,
snapped the head on a 1/2" breaker bar
and twisted the nut head off the puller screw in trying to separate the
hubs. I resort to laying them out on the floor with appropriate bar levers
before packing them off to the press
at work. I have bent just one  flange and that was before I bought the
puller. I bought a cheap large at HF to adjust the hubs.  It took a long
time to grind it down to be narrow
enough to fit but it works.

Bob Kramer

On Tue, Apr 14, 2020 at 10:40 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*
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