TM-5-4210-249-13-P-2

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 2 OF 4

TM-5-4210-249-13-P-2 - Page 314 of 1452

TM 5-4210-249-13&P-2

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DRAFT

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TFFT02624

WARNING

ICON 3

Remove rings, wristwatches, neck chains, and any other jewelry before working

around vehicle.

Jewelry can catch on equipment and cause serious injury.

Jewelry

and tools may short across electrical circuits and cause damage to equipment, or

severe burns or electrical shock to personnel.

Step 9.

Connect cab instrument panel wire harness F/R LOWER WARNING switch connector.

Disconnect cab instrument panel wire harness front and rear lower warning light flasher

unit connector.

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

Turn Service

Drive Lights On (TM 9-2320-347-10).

Put EMERG MASTER switch to on

position (WP 0004).

With a test lead set, check for 22 to 28 VDC between cab

instrument panel wire harness wire 1627 (blue) at front and rear lower warning light

flasher unit connector, terminal 1 and a known good ground.

If 22 to 28 VDC are not present, repair wire 1627 in cab instrument panel

wire harness if repairable (TM 9-2320-325-14&P), or replace cab instrument

panel wire harness (WP 0440).

Step 10.

Put F/R LOWER WARNING switch to on position (WP 0004).

Check for 22 to 28 VDC

between cab instrument panel wire harness wire 1628 (blue) at front and rear lower

warning light flasher unit connector, terminal 2 and a known good ground.

If 22 to 28 VDC are not present, repair wire 1628 in cab instrument panel

wire harness if repairable (TM 9-2320-325-14&P), or replace cab instrument

panel wire harness (WP 0440).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION