ARB RD121 - Manual (Page 9)

2 Removing the Existing Differential
7
2.5 Removing the Differential Center
c Remove the floating shaft (or ADD unit if present) from the side of
the differential housing.
NOTE : The floating shaft or stub axle is retained by the same
type of clip that was used to retain the outer stub axle.
A slide hammer may be required for safe removal.
Refer to your vehicle manufacturer’s service manual.
c Remove all bolts from around the outside of the clamshell.
c Gently pry the clamshell apart and remove the differential center.
c Using an arbor press, remove both bearing cups and preload shims
by pressing on the face of the shims through the housing from the
outside.
NOTE : Be sure not to mix up the left and right hand tapered
roller bearing cups or preload shims. Later it will be
necessary to know which cup came from which
bearing and which shim came from which side of the
differential.