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 101 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 10.

Step 11.

Step 12.

Step 13.

Step 14.

Step 15.

Step 16.

Repeat step 8 for branch circuit breaker number 3.

Using multimeter set to read continuity, put red probe on one end

of wire leading from right main circuit breaker to number 3 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 3 circuit breaker to front

ON/OFF switch and black probe on the other end.

a.

b.

If multimeter reads no continuity, notify Direct Support Maintenance.

Remove front ON/OFF switch (page 4-35). Using multimeter

set to read continuity, put red probe in contact on side

with just one contact. Put black probe in one of the contacts

on other side. Check reading on multi meter. Flip switch,

and check the reading again.

Repeat step 13a, putting black probe in the other contact on

that side.

If multimeter reads no continuity with either step 13a or 13b,

replace switch (page 4-35).

Install front ON/OFF switch (page 4-35). Repeat steps 13a and 13b for

rear ON/OFF switch.

Install rear ON/OFF switch (page 4-35). Repeat steps 13a and 13b for

ON/OFF blackout switch.

Install ON/OFF blackout switch (page 4-35). Using multimeter set

to read continuity, put red probe on one end of wires leading from front

ON/OFF to back ON/OFF switch and black probe on the other.

If multimeter reads no continuity, notify Direct Support Maintenance.

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