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 201 of 1452

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

0137-7

DRAFT

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TFFT04635

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 11.

Stop water pump engine from pump operator’s panel (WP 0022).

Turn battery

disconnect switch to OFF position (WP 0007).

Remove skid plate grille (WP 0550).

Disconnect main wire harness main 5 connector.

Turn battery disconnect switch to ON

position (WP 0007).

Start water pump engine (WP 0022).

With a test lead set, check

for 22 to 28 VDC at main wire harness wire 4075 (red) from main wire harness main 5

connector, terminal 17 to a known good ground.

a.

If 22 to 28 VDC are present, repair wire 4075 in cab pump control wire

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

control wire harness (WP 0443).

b.

If 22 to 28 VDC are not present, repair wire 4075 in main wire harness

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

harness (WP 0455).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION