I need to swap a pinion flange on a BW 68 Diff. I have some concerns about upsetting pre-loads when I re-torque the nut. Any advice on the procedure would be appreciated.

check user manual for specs, i might have a look later for it.

Ha

according to what i have ,you mark the pinion shaft ,nut and flange with a centre punch before you undo them.

 

Then do them back up to line up ,NO further.NO less.

 

Specs ,pinion bearing preload ; new bearings with seal 1.7Nm-3.4Nm

;used bearings with seal 1.7Nm-2.8Nm

 

 

NB if collapsible spacer is used for a second time a 0.76mm shim must be used

 

This according to mr gregorys manual hope this helps

 

rob