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 98 of 576
TM 9-2330-227-14&P
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. ALL LIGHTS DO NOT WORK, EARLY M146 - CONTINUED
Step 5.
Step 6.
Step 7.
Step 8.
Step 9.
Step 10.
Step 11.
Step 12.
Using multimeter set to read voltage, put red probe on one contact
for outside receptacle and black probe on the other.
If multimeter measurement is not approximately 110-Vac, replace
receptacle (page 4-76).
Unplug power source. Using multimeter set to read continuity, put
red probe on one end of wire leading from left side of connector
receptacle to left main circuit breaker and black probe on other end.
If multimeter reads no continuity, notify Direct
Support Maintenance.
Repeat step 6 for wire leading from right side of connector receptacle
to right main circuit breaker.
Using multimeter set to read continuity, put red probe on one contact
of left main circuit breaker and black probe on the other.
If multimeter reads no continuity, replace circuit breaker
(page 4-40).
Repeat step 8 for right main circuit breaker.
Repeat step 8 for branch circuit breaker number 1.
Using multimeter set to read continuity, put red probe on one end
of wire leading from right main circuit breaker to number 1 breaker
in branch circuit breaker box and black probe on the other end.
If multimeter reads no continuity, notify Direct Support
Maintenance.
Using multimeter set to read continuity, put red probe on one end
of wire leading from number 1 circuit breaker to front blackout
switch and black probe on the other end.
4-20
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