Seems like I've seen a thorough photographic essay on just that
recently (though it may have been a TR6). I recall a trick like
grind out the old bearing races a little bit so they will slip on and
off the new shaft?
I have a TR6 diff to rebuild this fall, so please let us know how it works out.
Jeff Scarbrough
Corrosion Acres, Ga.
On Fri, Jul 10, 2015 at 8:38 AM, Tim Gaines <mtgaines@presby.edu> wrote:
> I'm rebuilding the differential in my 1980 Spitfire; definitely a first for
> me. All of the gears look good, and I have bought all new bearings, seals,
> and thrust washers. So far, I have the planet and sun gears mounted in the
> carrier with good movement and no backlash. Next task is setting up the
> pinion, and my problem is that the shop manual I have is for the older shim
> diff, but I have the one with the crush washer. The manual and some other
> sources talk about doing a preliminary setup of the pinion (or a dummy
> pinion) with bearings in place to measure the pinion depth with a tool that
> incorporates a dial gauge on a special mount.
>
> My first question is, do I really need to do that? I don't have a dummy
> pinion, and if I use the actual pinion it would mean mounting and then later
> removing the bearings, something one source says is likely to bugger the
> bearings (which I did to one of the old ones during removal). During
> disassembly I recorded the number of turns it took to remove the pinion nut.
> Could I just set up the pinion with new bearings and crush washer and the
> original spacers and then tighten the nut to (nearly) the number of turns I
> counted earler and then use my new inch/lb torque wrench to get the reading
> specified in the manual? In other words, can I set the pinion preload and
> count on the depth being right?
>
> If I can't get away with that, is there some way to set up my dial gauge to
> measure the pinion depth without buying a new tool that I may never use
> again? Seems like it should be possible.
>
> Thanks for any advice you can give.
>
> Tim Gaines
> Clinton, SC
>
>
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