TM 9-2330-271-14&P
Table 4-2. Troubleshooting - Continued
Table 4-2. Troubleshooting - Continued
MALFUNCTION
MALFUNCTION
TEST OR INSPECTION
TEST OR INSPECTION
CORRECTIVE ACTION
CORRECTIVE ACTION
DOORS
ACCESS OPENINGS
1
DIFFICULTY IN LOCKING OR UNLOCKING DOORS
1
COVER DOES NOT SEAL OPENING
Step 1 Check center lock, flush bolts and striker
Step 1 Check cover for warpage or distortion
plates for rust and corrosion
Straighten cover Replace cover if defective
Clean and lubricate
Step 2 Check if door is hard to lock
Step 2 Check cover seals or gaskets
Add shim stock as required under center lock
Replace seals if defective (paragraph 4-71)
and/or flush bolt guides
Step 3 Check cover hinge for defects or bind
Step 3 Check for a good weather-tight seal when
Straighten bent hinge Replace defective
door is in closed and locked position
hinge (paragraph 4-71)
Add shim stock as required under striker
2
COVER SHIELDS DO NOT OPERATE PROPERLY
plate at flush bolts
Step 1 Check shields for proper alinement
Replace defective lock assembly (paragraph
Straighten shields as necessary Replace de-
fective shield (paragraph 4-71)
2
DOOR HINGES DO NOT OPERATE PROPERLY
Step 2 Check shield hinge for warpage or bind
Step 1 Check for rust on hinge pin
Straighten bent hinge Replace defective
Remove rust and lubricate
hinge (paragraph 4-71)
Step 2 Check for cracked or broken hinge
Step 3 Check stay for misalinement
Replace defective hinge (paragraph 4-65)
Straighten stay
3
DECONTAMINATION PORT AND AIR VENTS
Step 4 Check shield seals
Step 1 Check gaskets for serviceability
Replace defective seals (paragraph 4-71)
Remove defective gasket, clean area and in-
3
LOCKING DEVICES DO NOT OPERATE PROPERLY
stall new gasket (paragraphs, 4-69, 4-70)
Step 1 Check captive screws and thumb screws
Step 2 Check condition of air vent screen
Replace defective screws
Replace defective screen (paragraphs, 4-69,
Step 2 Check captive screw receptacles an rivnuts.
4-70).
Replace defective receptacles and rivnuts.
Section VII. MAINTENANCE ELECTRICAL SYSTEM
b. The 110/220-volt circuits used on the XM654,
4-14.
General
XM680, XM680E1, and XM822 semitrailers must be
supplied from an external source.
a. All semitrailers are equipped with a 24-volt
c. The semitrailer chassis is equipped with 24-volt
electrical system that is supplied from the electrical
electrical system. For operation with towing vehicle
system of the towing vehicle through the intervehicular
having a 12-volt system, the using service will exchange
cable to the receptacle located at the front center of the
the 24-volt lamps with 12-volt lamps and use the special
chassis. This circuit sup- plies current for the marker
12-volt cable adapter.
clearance lights, service and blackout taillights and
d. Refer to figures 4-8 through 4-19 for the wiring
stoplights, and the 24-volt Interior dome lights.
diagrams.
4-14
