ARB RD137 - Manual (Page 19)

4 Installing the Air Locker
17
4.7 Final Air Locker Assembly
c Spread the differential housing again (Refer to section 2.6).
c Hold shim packs ‘D’ (Refer to section 3.2) and ‘E’ (Refer to section
4.4) in position on the Air Locker.
c Reinstall the Air Locker into the differential housing.
NOTE : If the carrier is too difficult to install with the added
shim pack then the spreader tension may need to be
increased. Do not spread the housing more than
0.50mm [0.020”].
c Place the bearing caps in place to align the seal housing, making
sure that there is no contact between the bearing cap, master shim
and seal housing tube.
c Relieve all tension on the housing spreader.
c Tighten all bearing cap bolts with a torque wrench to the torque
specified in your vehicle manufacturer’s service manual.
4.8 Final Backlash Checking
c Set a depth indicator on one of the ring gear teeth as in Figure 10.
c While supporting the pinion gear by holding the drive flange, rotate
the differential in both directions while observing the maximum
variation in depth from the indicator (i.e., the highest value minus
the lowest value). This value is referred to as the ring and pinion
backlash.
c Rotate the differential center 90
°
and measure again for accuracy.
Figure 10.