ARB RD139 - Manual (Page 16)

3 Installing the Air Locker
14
! Adjust the backlash using an adjuster nut wrench to tighten or
loosen the adjuster nuts as required. (Refer to your vehicle service
manual.)
! Recheck backlash as before, repeating this procedure until
backlash is within the specified amount.
IMPORTANT:
It is critical to set up bearing pre-load when a differential is
installed. Improper pre-load will result in undue bearing wear,
increased stresses in the differential center, increased running
noise, and ultimately, ring and pinion gear damage.
! Set pre-load by tightening the right-hand adjuster nut (furthest away
from the crown wheel) by an amount specified in your vehicle
service manual.
! Tighten the bearing cap bolts with a torque wrench to the torque
specified in your vehicle manufacturer’s service manual.
! Install locking tabs onto the bearing caps.