TM-5-4210-249-13-P-1

TACTICAL FIRE FIGHTING TRUCK (TFF) MODEL M1142

TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL WITH REPAIR PARTS AND SPECIAL TOOLS LIST (INCLUDING DEPOT REPAIR PARTS AND SPECIAL TOOLS); PART 1 OF 4

TM-5-4210-249-13-P-1 - Page 381 of 1188

TM 5-4210-249-13&P-1

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DRAFT

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TFFT 04807

Step 24.

Stop crew cab air conditioner (WP 0008).

Shut vehicle engine off (TM 9-2320-347-10).

Turn battery disconnect switch to OFF position (WP 0007).

Remove circuit breaker box

cover (WP 0373).

Remove red wire from circuit breaker 12,

install a jumperwire

between red wire and a known good ground.

Check for continuity across red wire from

crew cab air conditioner motor contactor, terminal L1 to a known good ground.

If continuity is not present, replace 120-volt power cord (WP 0361).

Step 25.

Remove black wire from circuit breaker 14, install a jumperwire between black wire and

a known good ground.

Check for continuity across black wire from crew cab air

conditioner motor contactor, terminal L2 to a known good ground.

a.

If continuity is present, replace crew cab air conditioner/heater control

box (WP 0201).

b.

If continuity is not present, replace 120-volt power cord (WP 0361).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION