Section III. TROUBLESHOOTING
actions. If a malfunction is not listed or is not
corrected by listed corrective actions, notify your
a. This section contains troubleshooting in-
supervisor.
formation for locating and correcting most of the
operating troubles which may develop in the
3-10. Troubleshooting Table
semitrailer. Each malfunction for an individual
The troubleshooting malfunctions, tests and in-
component, unit, or system is followed by a list of
spections, and corrective actions that can be per-
tests or inspections which will help you to determine
fomed by the crew/operator are listed in table 3-2
probable causes and corrective actions to take. You
and 3-3.
should perform the tests /inspections and corrective
NOTE
actions in the order listed.
Before you use these tables, be sure you have
b. This manual cannot list all malfunctions that
performed all applicable operating checks.
may occur, nor all tests or inspections and corrective
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRICAL SYSTEM
1. ALL LAMPS FAIL TO LIGHT
Step 1. Check to see if intervehicular cable is properly plugged into receptacle of towing vehicle.
Pull out intervehicular cable and insert it fully into the receptacle (para 2-9).
Step 2. Check current from towing vehicle.
Insure that buttons on circuit breakers on semitrailer and towing vehicle are depresse
and locked into depressed position.
Step 3. Check for dirty, corroded or loose connections.
Clean and tighten connections. Notify organizational maintenance personnel if lights fail
to operate.
2. ONE CR MORE LAMPS WILL NOT LIGHT
Step 1. Check for burned-out lamp(s).
Step 2. Check for dirty or corroded cable contacts in sleeves or lamp sockets.
Remove lamps and clean contacts.
Step 3. Check for loose connections or broken cable.
Tighten connections. " Notify organizational maintenance personnel if a wire or cable
is broken.
3. DIM OR FLICKERING LIGHTS
Step 1. Check for defective lamp(s).
Step 2. Check for loose ground connection.
Tighten connection.
Step 3. Check for loose, dirty or corroded terminals.
Clean and tighten terminals.
Step 4. Check for dirty or corroded lamp sockets, cable connectors, or contacts in wiring harness o
inter-vehicular cable plugs.
Clean as necessary.
FRAME ASSEMBLY
4. VIBRATION
Step 1. Check tires, wheels and rims for proper-assembly and mounting.
Replace badly worn or defective tire (para 2-26). Notify organizational maintenance
personnel for defective wheel or rim.
Change 2
3-8.2