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Page Title:
TRAILER AIR SYSTEM WILL NOT CHARGE OR MAINTAIN A CHARGE. (Cont) |
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 TM 9-2330-385-14
NOTE
125 5 psi (862 34 kPa) must be
S
supplied to trailer air system before
troubleshooting can begin.
Air lines and valves listed in this
S
troubleshooting procedure are illustrated
and located in FO-2.
VISUAL INSPECTION
(1) Push in trailer charge valve in truck
(2) Listen for leaks from the following
components air lines 2254, 2223,
2620, 2605, 2424, 2228, 2548, 2019,
2606, 2014, fittings, parking brake
control valve, inversion valve, air bag
control valve, air reservoirs, brake
relay valves, and multifunction valve.
(a) If fittings leak and are loose,
tighten fittings.
(b) If air hose(s) leak, perform Steps
(3) and (4) below and repair or
replace air hose(s) (see schematic
(c) If any of the components listed
above leak, perform Steps (3)
and (4) below and replace them
according to maintenance
procedures (Chapter 4).
(d) If all of Items above are OK,
perform Steps (3) and (4) below
and go to Step (2) of this Fault.
(3) Pull out trailer charge valve in truck.
(4) Turn OFF ENGINE switch.
4-207
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