ARB RD74 - Manual (Page 27)

4 Installing the Air System
25
4.3 Connection to the Bulkhead Fitting
Trim the air line to length using a sharp knife.
Insert the support spring over the end of the air line - small end first.
(Fig.18.)
Insert the outer compression nut over the air line.
Insert the 5mm [0.197”] ferrule over the end of the air line. Leave
approx. 5mm of tubing between the ferrule and the end of the tube.
Figure 18.
Insert the support tube all the way into the end of the air line.
HINT : If the support tube is too difficult to insert, place the
end of the air line into a cup of boiled water to soften
the tubing.
Insert the tube end all the way into the center compression nut.
Screw on the outer compression nut and tighten. The ferrule and
support tube are now permanently attached.
Assemble the support spring over the outside of the outer
compression nut.
Secure any loose sections of tube with a cable tie.