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.
Raise and lower drawbar (Para 2-9) and
inspect drawbar for damage and binding at
connections to trailer frame.
(1) If drawbar is damaged or binding,
(2) If drawbar is OK, go to Step (2) of