ARB RD40 - Manual (Page 7)

2 Removing the Existing Differential
5
2.1 Vehicle Support
Safely secure the vehicle on a hoist. We recommend supporting the
vehicle on a chassis hoist to keep the differential area at a
convenient working height and to leave the wheels and axles free to
be rotated and removed.
Once supported off the ground, release the parking brake and leave
the vehicle in neutral. Chock the wheels if necessary.
2.2 Differential Fluid Drain
Clean around the differential cover plate seal to prevent dirt from
entering the differential.
Position a fluid drain reservoir under the differential and loosen all
differential cover plate retaining bolts.
Gently pry the cover plate away from the differential housing to
completely drain all differential fluid.
Once drained, remove differential cover plate.
HINT : This is a good time to check for metal particles in
your oil and in the bottom of the housing which may
indicate a worn bearing or differential component.
2.3 Removing the Axles
IMPORTANT:
Collision damage or heavy off-road use of your vehicle in the past may
have resulted in some degree of bending in the axle. Any misalignment of
the axle tubes may result in excessive wear and/or failure of your
differential and axle shafts. ARB strongly recommends that you have your
axle assembly inspected for concentricity and straightness before
installing your Air Locker.
NOTE : If the Air Locker is being installed into a non-‘C’ clip
housing then the cross shaft may not need to be
removed, however, the cross shaft pin retaining pin will
need to be installed and the retaining screw will still need
to have a thread locking compound applied and be
installed into the Air Locker and tightened before final
assembly (see Section 4.12 Reinstalling the Axles).