TM-9-2330-227-14-P
SEMITRAILER, VAN: SHOP, 6-TON, SINGLE AXLE, M146
TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)
JUNE 1985
TM-9-2330-227-14-P - Page 97 of 576
TM 9-2330-227-14&P
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. ONE OR MORE, BUT NOT ALL LIGHTS WILL NOT WORK - CONTINUED
Step 6.
Continued
a.
b.
3. DIM OR FLICKERING LIGHTS
If multimeter measurement is approximately 24-vdc, pull back light
assembly shell. If connector is damaged, repair (page 4-31).
If terminal is not damaged, replace light assembly (page 4-31).
If multimeter measurement is not approximately 24-vdc,
notify Direct Support Maintenance.
Check for loose or damaged ground coming off connector receptacle.
a. If ground is loose, clean and tighten.
b. If ground is damaged, notify Direct Support Maintenance.
ELECTRICAL SYSTEM 110-VOLT (EARLY AND LATE M146)
4. ALL LIGHTS DO NOT WORK, EARLY M146
Step 1.
Step 2.
Step 3.
Step 4.
Using multimeter set to read voltage, check power source to make sure
there is approximately 110-Volts alternating current (vac) coming to the
semitrailer.
If multimeter measurement is not approximately 110-vac,
troubleshoot power source.
Check connector receptacle for damage.
If receptacle is damaged, replace (page 4-76).
Check junction boxes to make sure all circuit breakers are on.
If circuit breakers are off, turn on (page 2-8).
Check switches to make sure they are on.
If switches are off, turn on (page 2-8).
4-19
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