ARB RD121 - Manual (Page 21)

3 Installing the Air Locker
19
3.9 Installing the Bulkhead Fitting
c To obtain an oil tight seal, apply a thread sealant to the threads of
the bulkhead body.
c Slide the bulkhead body over the seal housing tube and screw it
into the bulkhead port, and tighten.
c Wipe the area clean of any excess thread sealant (inside and
outside of the housing).
3.10 Setting Up the Bulkhead Fitting
c From the outside of the housing, assemble the small O-ring over
the top of the small length of seal housing tube that can be seen
inside the bulkhead fitting.
c While holding the seal housing tube at depth, insert the small drilled
end of the center compression nut over the extended tube as
shown in the assembly diagram (Fig.12.), and screw it into the
bulkhead body, and tighten.
Figure 12.
NOTE : Be sure to insert the correct end of the center
compression nut into the bulkhead body. The thread
has been partially relieved on the bulkhead side of the
center compression nut to visually identify its
orientation. (Fig.12.)