TM 9-2330-238-14
Table 3-1. Operator/Crew
Troubleshooting
(Con’t).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE
ACTION
2.
ONE OR MORE 24-VOLT LAMPS (BUT NOT ALL) FAIL TO LIGHT.
Step 1.
Check for loose plug connectors
at affected
light assemblies.
Connect
loose plug connector.
Step 2.
Check for dirty or corroded
terminals
on intervehicular
cable.
If connections,
receptacle,
and
plug
are
dirty
or
corroded,
notify
Organizational
Maintenance.
Step 3.
Check to see if rear bumper junction connector is loose if van and forward chassis lights are On, but
all rear lights are Off.
Remove, clean, and install connector,
ensuring socket and contacts
are clean.
3.
ALL CHASSIS
LIGHTS ARE ON AND VAN BODY CLEARANCE
LIGHTS ARE OFF.
Step 1.
Check for loose 24-volt connection
at receptacle.
Remove, clean, and install plug, ensuring proper connection
is made.
Step 2.
Check for dirty or corroded
contacts
in 24-volt light receptacle.
Clean contacts.
4.
DIRECTIONAL
SIGNALS
INOPERATIVE.
Step 1.
Check for dirty or corroded
intervehicular
cable socket and contacts.
Clean socket and contacts.
Step 2.
Check for loose plug connectors
at affected
light.
Connect
loose plug connectors.
BRAKE SYSTEM
5.
BRAKES DO NOT ENGAGE.
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
Step 6.
Check to see if air reservoir draincock
is open.
Close air reservoir draincock.
Check intervehicular
air lines for proper connections.
Connect air lines properly
(para 2-10).
Check for closed
air valve on towing vehicle.
Open air valve. Refer to towing vehicle technical
manual for instructions.
Check for low air pressure.
Inspect air supply and lines for leaks. Tighten connections
where applicable.
Check master cylinder for proper level of brake fluid.
Fill master cylinder with brake fluid to proper level (Chapter 3, Section
I).
Check for brake fluid leaks.
Open air valves. If brake fluid is leaking, notify Organizational
Maintenance.
3-9
