ARB RD94 - Manual (Page 22)

4 Installing the Air Locker
20
c Check that the contour of the tube will not interfere with the Air
Locker or the ring gear.
Figure 14.
NOTE : Check to ensure there is running clearance between
the cylinder cap of the Air Locker and the bearing
cap/differential housing (Fig.14.). If there is no
clearance, the bearing cap and the differential housing
may need to be ground down slightly until some
clearance exists.
NOTE : It is also a good idea to keep the tube away from the
bearing caps or any other part of the differential
casting as any contact due to vibration or shock may
wear the tube and eventually cause a leak.