80 series Cruiser

George.
Diff whining is caused by tooth contact pattern being incorrect,probably due to minor bearing wear.The only way to fix is to reset up crownwheel and pinion position. Get your local diff mechanic to reco the whole unit would
be the best way. cheers

The differentials in these were notorious for chewing out pinion bearings. If it is these bearings get in early otherwise it may involve the crownwheel and pinion as well - Big $$$.

Alan

Hi George
Wear and tear have caught up with your diff. A nice new set of bearings and seals will see it quiet again, and should cost $250 in parts plus that again in labour. The clutches in the lsd will be worn aswell, giving the sungears slack between their mating teeth...not an essential item, but if we are going to recondition the diff like new, they are probably another $180 off dollars.
If u were going to keep her, i would suggest a nice ARB locker with new bearings throughout whilst there. Would give you an onboard compresser aswell, but now we are talking $1800 all up.
Andrew

Appreciate the feed back, thanks for all the information. I am OK driving cars but not much on the mechanics apart from the basics.
Looks like I should be able to take it to some specialist mechanics and get them to overhaul the diff.

Can anyone suggest a reliable place to go to, based in Perth Northern suburbs.

Thanks again for all you help

Cheers
George