Fitting ATB differential - Full rebuild ?

Some advice please, I am fitting an ATB diff soon, would a full axle rebuild be best advised, the axle has presented no problems and is at 65k.

I'm hoping that the consensus is to just swap the ring gear over and throw it in......

sniper

Are you asking if the diff will need rebuilding?

The ATB is the actual crown wheel carrier isn't it? As such, then yes, someone with the necessary skills / experience would need to set it up so that the crown wheel sits in the right spot in relation to the pinion...

When we 'just' fit a Lockright / Detroit sort of locker it's a matter of taking the diff to pieces carefully laying each part down and labelling where it came from so that we can get inside the carrier to swap the gears for the locking plates, and then very carefully reassemble everything and hopefully it all goes back to where it was and nothing is disturbed, so the competent home mechanic can usually do it themselves...

With an ATB the side bearings on the original carrier would have to be swapped over and the whole lot set up again properly...?

HTH
Dave

Is an ATB the same as an ARB?

The carriers on mine required quite some adjustment of the side bearings to get the engagement correct.

All good fun if you're Au fait with gears.

No its more like a kaiser to install, much easier than an ARB, no airline for a start! Backlash much less critical, etc.

Swap the ring gear on to it. Backlash setting should be measured before and after. the workshop manual has pretty good info on setting it up. There is no need to touch the pinion shaft/bearings at all.

re-use the bearings (unless suspected damaged or mega mileage), as they match the wear rate to the gears and the pinion shaft bearings.