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 576 of 1452

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

0168-14

DRAFT

0168

TFFT04290

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 24.

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

Turn Service Drive Lights On

(TM 9-2320-347-10).

Turn On Clearance Lamps (TM 9-2320-347-10).

With a test lead

set, check for 22 to 28 VDC between wire H012 (white) at relay 14 connector, terminal 1

and a known good ground.

If 22 to 28 VDC are not present, go to Step 26.

Step 25.

With a test lead set, check for 22 to 28 VDC between wire 2794 (red) at relay 14

connector, terminal 3 and a known good ground.

a.

If 22 to 28 VDC are present, replace relay 14 (WP 0402).

b.

If 22 to 28 VDC are not present, replace cab power distribution wire

harness and block (WP 0441).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION