8 checking the backlash, 9 setting up the bulkhead fitting, 3 installing the air locker – ARB RD197 User Manual
Page 25: Checking the backlash, Important, Setting up the bulkhead fitting
3 Installing the Air Locker
23
Gently bend the seal housing tube into a profile that protrudes
through the bulkhead port and doesn’t pull at all on the seal
housing. (see Fig.18.)
NOTE :
Ensure there is clearance between the seal housing
tube, Air Locker, seal housing bracket and cover plate.
3.8
Checking the Backlash
Set up a depth indicator and measure the backlash as detailed in
section 2.5.1 or 2.5.2.
Refer to your vehicle service manual for the specified maximum
and minimum amounts of backlash.
IMPORTANT :
It is critical to set up bearing pre-load when a differential is
installed. Improper pre-load will result in undue bearing wear,
increased stresses in the differential carrier, increased running
noise and ultimately, ring and pinion gear damage.
Adjust the backlash and pre-load using an adjuster nut wrench to
tighten or loosen the adjuster nuts as required. (Refer to your
vehicle service manual.)
Recheck backlash as before, repeating this procedure until
backlash is within the specified amount.
Reinstall the adjuster nut locking tabs.
A
On the “Clamshell” replace the breather.
B
On the “Live Axle” tighten all bearing cap bolts with a torque
wrench to the torque specified in your vehicle manufacturer’s
service manual.
3.9
Setting Up the Bulkhead Fitting
Apply thread sealant to the threads of the bulkhead body.
Place the bulkhead body over the short length of tube protruding
from the housing and screw it into the tapped hole, and tighten.
Wipe the area clean of any excess thread sealant (inside and
outside of the housing).
From the outside of the housing, assemble the small O-ring over
the top of the short length of seal housing protruding through the
bulkhead fitting.