ARB RD87 - Manual (Page 28)

4 Installing the Air System
26
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.
c Insert the tube end all the way into the center compression nut.
c Screw on the outer compression nut and tighten. The ferrule and
support tube are now permanently attached.
c Assemble the support spring over the outside of the outer
compression nut.
c Secure any loose sections of tube with a cable tie.