TM 9-2320-283-10
Table 3-1. Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2.
Make sure you have given air cylinder time to react.
Leave LOCK/UNLOCK control in UNLOCK position and
wait for cylinder to unlock (refer to paragraph 2-2).
Step 3.
If fifth wheel position still cannot be adjusted after you have
completed Steps 1. and 2.. fifth wheel may be hung-up between
segments of slide track rack.
Move LOCK/UNLOCK control to UNLOCK position, apply
trailer brake hand control, and shift range selector to (1)
or (R). Tap accelerator pedal to jog fifth wheel-to-slide
track rack connection. Shift to NEUTRAL (N) and check
to see if fifth wheel is now unlocked. Release trailer brake
hand control.
Step 4.
If fifth wheel position still cannot be adjusted after you have
completed previous steps, check air line connections at cab
mounted control and at air cylinder under fifth wheel plate.
Check for sound of escaping air and loose fittings.
If you find any leaks in air system connection fittings at
control or air cylinder, notify Organizational Maintenance.
ELECTRICAL SYSTEM
8.
ONE OR MORE OF THE ELECTRICAL SYSTEMS NOT WORKING.
Step 1.
Check to make sure appropriate switch(es) are in the ON position
and if a lamp system that the blackout switch is in NORMAL
position. If tractor is coupled to semitrailer and problem is with
semitrailer lamp system, check to make sure that intervehicular
cable is connected securely between tractor and semitrailer.
Put appropriate switch(es) in the ON position. If neces-
sary, securely connect intervehicular cable.
Step 2.
Check to make sure that none of the resettable circuit breakers
have popped out indicating a momentary overload or short circuit.
Open access panel and reset any circuit breakers which have
popped out, by pushing in. Then recheck electrical system which
was not operating. If resetting fails to correct the problem or the
breaker button again pops out, notify Organizational Maintenance.
Step 3.
Troubleshoot semitrailer.
If your tests, inspections, and corrective actions fail to solve
problem, notify Organizational Maintenance.
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