[Fot] Triumph 4 speed O/D's and Layshaft bearing failures.

[Glenn Franco]

Very interesting!
Do you have a photo of the bearing install and do you use it with the
bronze bush you installed in the Laygear?
Thanks
Glenn

On Sun, Aug 11, 2019 at 5:53 PM Terry O’Beirne <tobeirne at skillpro.com.au>
wrote:

> In all my years of having a business fixing hundreds of these boxes , I
> don’t think I ever had to resort to a pulling device like shown
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> *   I really am gob-smacked at what some of you guys are doing to these
> boxes!!   I totally agree, the rear thrust washer can be a problem. but a
> hook pick and screwdriver can usually pull up the most recalcitrant of
> these. In extreme cases a tiny Dremel grinder can then be used to cut thru
> the thrust washer once its exposed a bit.   In the 1970’s we mounted a die
> grinder in the tool-post of the lathe and then used a grinding tool in that
> to remove the outer shell of the bearing and then regrind the laygear to
> accept a bigger bearing or a bush. Once that rear laygear bearing has
> started to fail, the laygear gets very hard and conventional lathe tooling
> wont work, even tipped tools can struggle to get thru the hard layer. Over
> the years, the tooling got a bit flasher but the idea never really changed.
> Doing it by hand can be a disaster, because if you leave a ‘groove’ or dent
> in the laygear housing, a replacement shell type bearing will never last.
> You usually can’t perform this repair with the later open cage bearings as
> the laygear finish and hardness wont be good enough. Its perfectly OK for a
> LG3 type bronze bush however…see pic below   I also include a pic of a
> gearbox case bored out to accept a taper roller at 1st gear end. Have done
> it to both ends with shim adjustment at front. Done plenty of these
> [image: A hand holding a piece of metal Description automatically
> generated]   [image: A picture containing ground, outdoor, transport
> Description automatically generated]             From: Fot
> <fot-bounces at autox.team.net <fot-bounces at autox.team.net>> On Behalf Of
> fubog1 via Fot Sent: 12 August 2019 03:49 To: gblake58tr3 at icloud.com
> <gblake58tr3 at icloud.com>; britcars at bellsouth.net <britcars at bellsouth.net>
> Cc: fot at autox.team.net <fot at autox.team.net>; brakey6666 at gmail.com
> <brakey6666 at gmail.com> Subject: Re: [Fot] Triumph 4 speed O/D's and
> Layshaft bearing failures.   HaHa that's pretty slick (insert thumbs-up)!
> Glen     -----Original Message----- From: Greg Blake
> <gblake58tr3 at icloud.com <gblake58tr3 at icloud.com>> To: barry rosenberg
> <britcars at bellsouth.net <britcars at bellsouth.net>> Cc: fubog1
> <fubog1 at aol.com <fubog1 at aol.com>>; FOT list <fot at autox.team.net
> <fot at autox.team.net>>; Glenn Franco <brakey6666 at gmail.com
> <brakey6666 at gmail.com>> Sent: Sun, Aug 11, 2019 1:26 pm Subject: Re: [Fot]
> Triumph 4 speed O/D's and Layshaft bearing failures. I had one stuck last
> year. This is the little pulled I made from 2 exhaust clamps and some all
> thread rod. Worked like a champ.      *
>
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