ARB RD93 - Manual (Page 16)

3 Installing the Air Locker
14
Refer to your vehicle service manual for the specified maximum
and minimum amounts of backlash.
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 adjuster nuts against each other 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.
3.5 Profiling the Seal Housing Tube
Without using sharp, jagged tools such as pliers (usually your
hands are the best tool for this job), bend the seal housing tube so
that it runs under the ring gear and upwards protruding through the
bulkhead port in the differential housing. (Fig. 9. & Fig. 10.)
Check that the contour of the tube will not interfere with the Air
Locker or the ring gear.
NOTE : It is a good idea to keep the tube away from the
bearing caps or any other part of the differential
casting as any contact due to vibration or shock may
wear the tube and eventually cause a leak.