UN-1 Input shaft seal replacement

[Slow M]

Helped a friend w/ clutch replacement, on an '89 turbo, this weekend. Turns out, the one that came out was like new, as it was so well lubricated, from both sides. There was gearbox oil dribbling down, along the input shaft, and engine oil was seeping down, below the rear main seal.

So, we pulled the UN-1 out of the engine bay, took the bell housing off, and realized that the input shaft seal may be a bit more of a pain in the skinned knuckles, than we'd originally bargained for. We'd be grateful for the silver bullet fix, to the problem. Have any of you changed this seal, without splitting the transaxle case? Is it possible? Could you share the procedure?

Thanks, and best regards,
Bernard.

[oilydan]

When I did mine I ended up splitting the gearbox.

Also did the spigot bearing (main reason I had the gearbox out), checked crown wheel and replaced driveshaft bearings, just for good measure.

Apart from getting the box out, I recall it was all quite simple/cheap.

[Slow M]

Thanks for the reply.

If any of you have replaced the input shaft seal, without splitting the cases, please chime in.

Best regards,
Bernard.

[Slow M]

To whomever may need this, in the future:

Note:
The cases must be split, to remove, and reinstall the seal. The seal has a lip type metal flange, and the cases have a recessed groove, that captures said lip.

Best,
B