The pinion should have no play, the bearings should run with a preload. Spinning will have a light drag.
If there is any play in that shaft no seal will hold the oil in. That diff could well be shot.


Cheers, Charlie
If It ain't broke, Modify it!
87 Montero turbo Converted back in Spring1989
95 Montero SR 3.8 DOHC Only one?
93 Pajero 3 door 6G75 Mivec with paddle shifted 5 speed
Then a Gen2 SR with full coil independent suspension.