4-15. AIR SYSTEM TROUBLESHOOTING PROCEDURES (CONT.)
2. ONE OR BOTH FLATRACK LOCKING MECHANISM LATCHES WILL NOT LOCK.
Tools and Special Tools
Tool Kit, General Mechanic's: Automotive
(Item 50, Appendix J)
Engine OFF, (TM 9-2320-364-10)
Parking brake applied, (TM 9-2320-364-10)
Solution, Soap (Item 21, Appendix E)
Wheels chocked, (TM 9-2320-364-10)
Emergency and service air supply gladhand
connected to truck, (Para 2-22)
Trailer air system charged, (Para 2-22)
Flatrack removed from trailer,
Soap and water solution will be used to visually check for leaks.
Truck air system OK.
Are air lines 2078 and 2081,
and fittings free of crimps?
REASON FOR QUESTION
Air lines and fittings faulty.
If air hose(s) is crimped, air
Flatrack locking valve faulty.
pressure will not exhaust from
Air chamber(s) faulty.
Flatrack locking mechanism
Repair or replace air
hose(s) and fitting(s)
(see schematic Fig
Verify repair, go to
Step 5 of this Fault.