ARB RD85 - Manual (Page 39)

7 Testing & Final Assembly
37
c Turn the ignition to the ‘ON’ position (leaving the motor off). The
large illuminating symbol on the Air Locker switch cover should be
‘OFF’.
c Turn the compressor (or alternate air source) on to charge the air
supply up to its maximum pressure.
c Rotate one wheel by hand.
c 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.
c Turn the Air Locker switch to the ‘ON’ position. The illuminated
symbol on the switch cover should light up.
c Rotate the same wheel again.
c Both wheels should rotate together.
c Turn the switch off again.
c Rotate the same wheel.
c The wheels should again rotate in opposite directions.
7.3 Filling the Differential
NOTE : Consult the ARB Air Locker Operating & Service
Manual for recommendations on differential lubricant
specifications.
c Remove the filler plug.
c Refill the differential until level with the filler hole.
c Rotate the differential center 2 full turns.
c Check the oil level and add oil if necessary.
c Replace filler plug (apply thread sealant to filler plug before
inserting if it is a threaded type plug).
c Wipe differential housing clean of any oil or grease which may
collect dirt or other abrasive particles.