ARB RD12 - Manual (Page 24)

4 Installing the Air Locker
22
4.8 Air Locker Final Assembly
c Remove the seal housing, shim pack, and master shim, and clean
all parts of the differential assembly. It is very important to make
sure the seal housing grooves are free from any contaminants (eg:
water, dirt, metal fillings, etc.)
c Lubricate the O-rings with oil (prior to assembly), then stretch them
over the bearing journal and release them into the grooves.
NOTE : Do not roll the O-rings onto the seal housing as this
will damage them.
c Place the bearing cups onto their respective bearing cones.
c Assemble the shim pack and master shim onto the seal housing.
NOTE : The seal housing is to be assembled with the shim
pack behind the flat face of the master shim, and both
the master shim and shim pack are to fit over top of
the step on the seal housing.
c Install the seal housing over the O-rings by gently applying a
downward twisting motion. This will allow the O-rings to gently
engage.
c Point the seal housing tube straight out of the housing, hold the
seal housing and tapered roller bearing cup in place, and insert and
hold the Air Locker into the differential housing.
c Install the bearing cap on the ring gear side.
c Check to see if the bearing cap on the seal housing side fits over
the tube without fouling.
NOTE : Do not forget to check the bearing caps are turned the
correct way around.
c Install all bearing cap bolts and torque to manufacturer’s specs.
4.9
Final Backlash Checking
c Relieve all tension on the housing spreader.
c Tighten all bearing cap bolts with a torque wrench to the torque
specified in your vehicle manufacturer’s service manual.
c Set a depth indicator on one of the ring gear teeth as in
Figure 15.