Randall had it right again. I for one was not surprised. My problem was
that the grease seal did not seat in all the way when fitted per the TR3
Workshop Manual. It was obvious when I took everything apart. Jeff T
suggested I use the TR6 method of installing the inner bearing and the
grease seal into the hub and then putting the whole assembly on the stub
axle. That worked fine. I surmise that the issue is that the grease seals
do not necessarily seat well when the hub is slipped onto them. If you
follow the TR3 manual method, you cannot see that.
Happy New Year to all!
Glenn C
1959 TR3A TS31684L [in total frame up restoration]
1960 TR3A TS64803L [driving, but needs work]
----- Original Message -----
From: "Randall Young" <ryoung@navcomtech.com>
To: <triumphs@autox.team.net>
Sent: Tuesday, December 30, 2003 1:38 PM
Subject: RE: TR3A front wheel bearings
> > If I recall correctly ,these tapered roller bearings can take
> > tremendous loads.
> > 20 in-lb isn't a whole lot, so I think it might be OK....keep
> > them well greased.
> > Only one potential problem....heavily preloaded bearing will
> > generate a lot of heat. Heat will cause some expansion thereby
> > increasing preload slightly.
>
> The front brakes can (and do) generate a lot of heat, some of which winds
up
> in the hub and can increase preload dramatically (since the spindle
doesn't
> get as hot).
>
> Given the unpleasantry of having a wheel bearing fail, I would certainly
> want to find out what the problem is and fix it, rather than just
> eliminating all the factory-specified clearance and hoping for the best.
> One way to find out if the seal is the problem is to simply remove the
seal
> and try again.
>
> Randall
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