ARB RD104 - Manual (Page 20)

3 Installing the Air Locker
18
3.5.2 B Port Location on the Live Axle Housing
c Mark a spot on the top of the outside shell of the differential
housing that will be clear of the ring gear position once the seal
housing tube has been installed. Figures 10. and 12. show how the
tube will port through the differential housing.
Figure 11.
c Cover the drive pinion and axle tube areas with a rag to protect
them from metal filings.
c Drill through the housing square to the outside surface using a
11.2mm [7/16”] drill.
c Tap the hole from the outside using a ¼” NPT pipe tap. (Figure 12.)
Figure 12.
c Remove any sharp edges from the hole that may chip-off and fall
into the housing.
c Carefully remove the rags and inspect with a service light inside the
housing to insure no metal filings are left behind.