TRAILER AIR SYSTEM WILL NOT CHARGE OR MAINTAIN A CHARGE.

TM 9-2330-385-14

4-15. AIR SYSTEM TROUBLESHOOTING PROCEDURES (CONT).

1. TRAILER AIR SYSTEM WILL NOT CHARGE OR MAINTAIN A CHARGE.

INITIAL SETUP

Tools and Special Tools

References

Tool Kit, General Mechanic's: Automotive

TM 9-2320-364-10

(Item 50, Appendix J)

Equipment Condition

Pressure Test Kit (Item 34, Appendix J)

Engine OFF, (TM 9-2320-364-10)

Parking brake applied, (TM 9-2320-364-10)

Materials/Parts

Solution, Soap (Item 21, Appendix E)

Wheels chocked, (TM 9-2320-364-10)

Emergency and service air supply

Personnel Required

gladhand connected to truck, (Para 2-22)

Two

Trailer air system charged, (Para 2-22)

Flatrack removed from trailer,

(TM 9-2320-364-10)

NOTE

Soap and water solution will be used to visually check for leaks.

START

KNOWN INFO

TEST OPTIONS

Visual inspection.

Truck air system OK.

Are air lines 2254, 2223, 2620,

Audible inspection.

2605, 2424, 2228,

POSSIBLE PROBLEMS

2548, 2019, 2606, and 2014,

REASON FOR QUESTION

fittings, parking brake valve,

Air lines and fittings faulty.

If air lines and fittings, valves,

multifunction valve, air bag

Parking brake valve faulty.

air reservoirs and/or brake

control valve, inversion valve

Multifunction valve faulty.

chambers leak, loss of air

and/or air reservoirs free

pressure will prevent trailer air

of leaks?

system from charging correctly.

Repair or replace air

lines and fittings

and/or replace leaking

components.

Verify repair, go to

Step 4 of this Fault.

YES

4-206