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 102 of 576
TM 9-2330-227-14&P
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. ALL LIGHTS DO NOT WORK (LATE M146) - CONTINUED
Step 17.
Step 18.
Step 19.
Step 20.
Step 21.
Repeat step 16 for the other wire leading from front ON/OFF switch
to back ON/OFF switch.
Using multimeter set to read continuity, put red probe on one
end of wire leading from rear ON/OFF switch to blackout
ON/OFF switch and black probe on the other end.
If multimeter shows no continuity, notify Direct Support
Maintenance.
Using multimeter set to read continuity, put red probe on one
end of wire leading from blackout ON/OFF switch to right rear
light and black probe on the other end.
If multimeter shows no continuity, notify Direct Support
Maintenance.
Using multimeter set to read continuity, put red probe on one
end of wire leading from right front light to bus bar in right
junction box and black probe on the other end.
If multimeter shows no continuity, notify Direct Support
Maintenance.
Remove wires from bus bar in right junction box. Using multi-
meter set to read continuity, put red probe on one end of bus
bar and black probe on the other end.
a. If multimeter shows no continuity, replace junction box
(page 4-42).
b. If multimeter shows continuity, replace wire leading
from bus bar in right junction box to left main circuit
breaker. If circuit breaker needs replacement, notify
Direct Support Maintenance.
4-24
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