ARB RD131 - Manual (Page 20)

4 Installing the Air Locker
18
Figure 11.
Install the differential cover plate onto the differential housing using
2 bolts (hand tight only) to hold the cover in place.
Rotate the differential center a few turns to make sure the tube is
not contacting the center at any point.
Mark a position on the protruding length of tube approximately 8mm
[5/16”] from the bulkhead port (Fig. 12.).
Figure 12.