ARB RD114 - Manual (Page 15)

3 Installing the Air Locker
13
3.5 Checking for Assembly Clearance
IMPORTANT:
Some axle housing castings will require modification for
correct Air Locker installation. A properly installed
Air Locker will have no less than 2mm [1/16”] between any
part of the differential carrier and the axle housing casting.
c Hold the tapered roller bearing cups onto the cones on the carrier.
c Carefully insert the carrier assembly into the axle housing so that
the ring gear is in mesh with the drive pinion.
c Using an automotive feeler gauge, check for adequate clearance
between the body of the Air Locker and the axle housing casting
around the flange cap.
c If necessary, remove the Air Locker, the pinion shaft assembly and
pinion support bearing and grind or file the axle housing casting to
gain clearance. (Figure 6. shows an example of relief grinding on
one of the ribs near the flange cap.)
HINT : Applying a machinists marking compound to the axle
housing cast surfaces will show any points of contact
after the Air Locker has been removed.
Figure 6.
c Once the required clearance has been achieved thoroughly clean
the axle housing of any grinding dust or other foreign particles.