125 ± 5 psi (862 ± 34 kPa) must be
supplied to trailer air system before
troubleshooting can begin.
Air lines and valves listed in this
troubleshooting procedure are illustrated
and located in FO-2.
(1) Push in flatrack locking valve
(2) Listen for leaks on following air lines
and components: air lines 2080,
2078, 2081, fittings, pressure
holdback valve, flatrack locking valve
and air chambers.
(a) If fittings leak and are loose,
(b) If air hose(s) leak, perform
Step (3) below and repair or
replace air hose(s) (see schematic
(c) If any of the components listed
above leak, perform Step (3)
below and replace them
according to maintenance
procedures (Chapter 4).
(d) If all of the Items above are OK,
perform Step (3) below and go to
Step (2) of this Fault.
(3) Pull out flatrack locking valve.