ARB RD115 - Manual (Page 7)

2 Removing the Existing Differential
5
2.1 Vehicle Support
c 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.
c 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
c Clean around the differential cover plate seal to prevent dirt from
entering the differential.
c Position a fluid drain reservoir under the differential and loosen all
differential cover plate retaining bolts.
c Gently pry the cover plate away from the differential housing to
completely drain all differential fluid.
c 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
c Remove the backing plate nuts from the axle housing.
c Discard the nuts and replace at time of reassembly.
NOTE : The nuts are designed to be tightened only once and
must not be reused.
c Remove each axle shaft by pulling outward on the axle. It may
need to be loosened with pry bars.
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.