ARB RD168 - Manual (Page 41)

6 Testing & Final Assembly
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6.3 Testing the Air Locker Actuation
To test that your air system, electrical system, and your Air Locker
differential is functioning correctly:
F Support the vehicle such that the wheels are free to rotate (e.g., on
axle stands, a chassis hoist, etc.)
F Leave the parking brake off, the transmission in neutral, and the Air
Locker switch ‘OFF’.
F Turn the ignition to the ‘ON’ position (leaving the motor off). The
large illuminating symbol on the Air Locker switch cover should be
‘OFF’.
F Turn the compressor (or alternate air source) on to charge the air
supply up to its maximum pressure.
F While supporting the drive shaft flange, rotate one wheel by hand.
F The wheel should rotate freely and the opposite wheel should be
turning in the opposite direction without any resistance or
mechanical noise from within the differential.
F Turn the Air Locker switch to the ‘ON’ position. The illuminated
symbol on the switch cover should light up.
F Rotate the same wheel again.
F Both wheels should rotate together.
F Turn the switch off again.
F Rotate the same wheel.
F The wheels should again rotate in opposite directions.
6.4
Re-Sealing & Filling the Differential
NOTE : Consult the ARB Air Locker Operating & Service
Manual for recommendations on differential lubricant
specifications.
F Replace the differential cover using gasket sealant or a new
standard differential cover gasket for your make of vehicle.
F Refill the differential until level with the filler hole.
F Rotate the differential center 2 full turns.
F Check the oil level and add oil if necessary.
F Replace filler plug (apply thread sealant to filler plug before
inserting if it is a threaded type plug).
F Wipe differential housing clean of any oil or grease which may
collect dirt or other abrasive particles.