ARB RD158 - Manual (Page 28)

5 Installing the Air System
26
5.3 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. 16.)
 Insert the outer compression nut over the air line.
 Push the airline onto the barb on the center compression nut,
ensuring that it is pushed all the way to the end.
Figure 16.
HINT : If the tube is too difficult to push on, place the end of
the air line into a cup of boiled water to soften the
tubing.
 Screw on the outer compression nut and tighten, while supporting
the center compression nut with a 3/8” spanner. The airline is now
attached to the center compression nut.
NOTE : The outer compression nut will tighten against a stop.
Over tightening will not create a better seal.
 Assemble the support spring over the outside of the outer
compression nut.
 Secure any loose sections of tube with a cable tie.