ARB RD90 - Manual (Page 14)

3 Installing the Air Locker
12
c Using a caliper or similarly accurate measurement method
(i.e., able to take accurate measurements within 0.04mm [0.0015”]),
measure the distance from the shoulder of the bearing journal to
the ring gear mounting face (shown as ‘A’ in Figure 6.) and record
this measurement as ‘A’.
c Measure the thickness of the factory shim removed from the end of
the differential carrier (shown as ‘B’ in Figure 6.).and record this
measurement as ‘B’.
Figure 7.
c Measure the distance from the Air Locker bearing shoulder to the
ring gear mounting face (shown as ‘C’ in Figure 7.) and record this
measurement as ‘C’.
RING GEAR
FLANGE
AIR LOCKER DIFFERENTIAL