ARB RD168 - Manual (Page 22)

3 Installing the Air Locker
20
NOTE : Do not add shims between the bearing cone and the
bearing seat of the seal housing side and NEVER
machine the Air Locker.
F Remove the Air Locker from the axle housing.
F Install the shim pack ‘D’ between the bearing cup and the seal
housing as shown in Figure 9.
F Spread the differential housing again (Refer to Section 2.6).
F Re-install the Air Locker into the axle housing.
NOTE : If the Air Locker is too tight to fully install then the
spreader tension may need to be increased. Do not
spread the housing more than 0.50mm [0.020”].
NOTE : Use the ARB Shim Driver #0770004 to install the
supplied Air Locker shims.
F Rotate the seal housing until the tube is pointing straight out of the
axle housing.
F Release all spreader tension.
F Check that some backlash can be felt between the ring and pinion
gears. No backlash would be an early indication of incorrect shim
thickness.
3.7 Reinstalling the Bearing Caps
F Install the bearing caps oriented as they were marked before they
were removed, and tighten the bearing cap bolts. It is not
necessary to torque them down at this time.
F Check that some clearance exists between the bearing cap and the
seal housing tube. If not, the bearing cap should be removed and
the tube re-bent for adequate clearance.
F Tighten all bearing cap bolts with a torque wrench to the torque
specified in your vehicle manufacturer’s service manual.