ARB RD110 - Manual (Page 20)

3 Installing the Air Locker
18
c Install the seal housing onto the Air Locker by carefully sliding it
over the bearing journal by hand with a gentle twisting motion. This
will allow the O-rings to engage gently.
c Rotate the seal housing a few turns to make sure it rotates freely
and smoothly.
3.9 Installing the Differential Center
IMPORTANT:
YOU
MUST SPREAD THE HOUSING.
Spreading the differential housing with a differential case
spreader is a step which is critical to set up bearing pre-load
on cast iron differential housings. Improper pre-load will
result in undue bearing wear, increased stresses in the
differential center, increased running noise, and ultimately,
ring and pinion gear damage.
c Set up a spreader and a dial indicator as shown in Fig 10.
Figure 10.