ARB RD149 - Manual (Page 17)

3 Installing the Air Locker
15
3.6 Setting up the Bulkhead Fitting
Apply thread sealant to the threads of the bulkhead body.
Screw the bulkhead body into the tapped hole, and tighten.
Wipe the area clean of any excess thread sealant (inside and
outside of the housing).
Without using sharp, jagged tools such as pliers (your hands are
the best tool for this job), bend the seal housing tube to
approximate the finished profile. This will allow the tube to be
trimmed to a length that would allow it to protrude from the
bulkhead fitting. (Fig. 9.)
NOTE : Use an automotive brake line tubing cutter to cut the
seal housing tube, never a hacksaw as this will leave
metal filings in the air system.
Figure 9.
From the inside of the housing, insert the trimmed tube into the
bulkhead.
From the outside of the housing, assemble the small O-ring over
the top of the short length of seal housing tube protruding through
the bulkhead fitting.
While holding the seal housing tube into the bulkhead fitting, insert
the small drilled end of the center compression nut over the
extended tube as shown in the assembly diagram (Fig.10.), and
screw it into the bulkhead body, and lightly tighten.