ARB RD149 - Manual (Page 19)

3 Installing the Air Locker
17
3.7 Profiling the Seal Housing Tube
With the seal housing tube now firmly secured into the bulkhead
fitting, bend the tube so that it closely follows the profile of the
differential. (Fig.11.).
Check that the contour of the tube will not interfere with the bearing
caps, the Air Locker, the ring gear or the axle housing.
Figure 11.
NOTE : Less than 8mm [5/16”] between the tube and ring gear
should be considered too little clearance.