FIRSTLY. I am not a mechanic or a qualified diff fitter.
This is just how I did it. Not necessarily the correct way.
As instructions supplied were not relevant to a 4 pin Sierra carrier.
They were to suit a 2 pin, with open access.
Just another note,
instructions were emphatic on leaving out all the original thrust washers.
Leaving them in could make for wrong clearances maybe??
It may help somebody.













