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[Healeys] Diff again

Subject: [Healeys] Diff again
From: pajtamuvek at gmail.com (Austin Healey)
Date: Sat, 22 Jan 2011 20:53:35 +0100
Greetings Mates,

I am still preparing for the diff rebuild.
I have disscussed the task on a couple of forums and with different
specialist-looking people personaly. Unfortunatly still not enlightened
enough.

My main problems lie by the pinion position.

- the factory workshop manual tells me to use a special tool for
positioning. Unfortunalty I dont have this item - and if I am righ, it is
not available any more.

- it would also be nice to know the exact distance from the differential
axle to the pinion top - but I have not found any source for this kind of
data

- as an alternative method, many sources recommend to measure and fix the
existing pinion height, and to bring the pinion back there after replacing
the bearing. Clear as springwater. I have made some plans for a simple tool
which would make it easy to achieve. BUT I moved on thinking about the
subject, and I find this not problemfree. As the bearings now in my diff are
quite well worn (after 50+ years) they must bring thurder away the pinion
from the factory spec. Is it worth bothering with the pinion height, or
better to install the new bearings, set preload, backlash etc, and check the
contact pattern with a contact compound (and reposition the pinion if
needed)? Or bearing wear does not alter pinion height by much?

Please if possible teach me.

Greetings:
Gergo

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