Ignition switch pushed in (Table 2-1, 8).
T a n k drain valve open and air bleed off (Table 3-l).
(1) Inspect intercooler tubing for damage(l).
(2) Inspect aftercooler for damage(2).
(3) Inspect unloader valve tubing for damage(3).
(4) Inspect tee fittings and elbows for damage.
b . Replacement. Replace defective tube assemblies, tee fittings, and elbows as follows:
(a) Undo nuts at each end of a defective tube.
( c ) If fitting is to be removed, undo tube nuts and pull end of tube away enough to