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 1094 of 1188

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

0122-8

DRAFT

0122

TFFT03622

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 7.

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

Remove driver side crew

cab access panel (WP 0499).

Remove pump house panel Q (WP 0540).

Disconnect

main wire harness valve control wire harness connector DV1.

Turn battery disconnect

switch to ON position (WP 0007).

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

main wire harness wire 4053 (brown) at main wire harness valve control wire harness

connector DV1, terminal 6 and a known good ground.

If 22 to 28 VDC are present, repair wire 4053 in valve control wire harness if

repairable (TM 9-2320-325-14&P), or replace valve control wire

harness (WP 0463).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION