ARB RD82 - Manual (Page 12)

3 Approximate Backlash Shimming
10
3.1 Bench Measurement
In order to reproduce a similar pre-load and ring and pinion backlash
in your Air Locker to that of your existing differential, measurements
need to be taken so that a shim thickness can be calculated.
Secure the differential to a work bench.
Remove the bolts that hold the ring gear in place.
Using a plastic or copper hammer, tap in a circle around the ring
gear to separate it from the differential carrier.
Remove the original bearings from the differential center using a
bearing puller.
NOTE : Keep all shims and bearings separated so that they
can be identified as to which end of the differential
they came from.
Examine the bearing cup and cone from Figure 5. for damage or
wear and, if necessary, discard it and replace it with the same size
and type of bearing.
Figure 5.
FACTORY DIFFERENTIAL