TM 9-2320-363-20-1
Table 3-1. Troubleshooting (Cont)
Malfunction
Test or inspection
Corrective action
CHASSIS (CONT)
4. PINTLE HOOK EYE NOT LOCKED.
Check for faulty or missing lock pin.
Replace or repair pintle hook (page 4-642).
5. PINTLE DOES NOT SWIVEL.
Step 1.
Check for lack of lubrication.
Lubricate pintle (page 2-3, Unit PMCS).
Step 2.
Check for faulty assembly.
Replace or repair pintle hook (page 4-642).
FIFTH WHEEL
1. TRAILER WILL NOT COUPLE OR BECOMES UNCOUPLED.
Step 1.
Check for proper coupling by visually inspecting fifth wheel throat.
Reposition tractor (TM 9-2320-363-10).
Step 2.
Check fifth wheel for worn or damaged parts.
Replace worn or damaged parts (notify direct support
maintenance).
Step 3. Check operation of fifth wheel locking device.
Adjust locking mechanism (pages 4-639, 4-641).
2. RESTRICTED RELATIVE MOTION BETWEEN TRACTOR AND TRAILER.
Check for faulty slide bracket.
Adjust slide bracket (pages 4-639, 4-641).
CAB
1. LOSS OF VEHICLE INSTRUMENTATION.
Step 1.
Check for faulty instrument panel.
Repair instrument panel (pages 4-170 thru 4-190).
Step 2.
Check for faulty tachograph.
Replace tachograph (pages 4-178, 4-182).
3-90 Change 3
