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 581 of 1188

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

0095-3

DRAFT

0095

TFFT04034

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 5.

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

Remove personnel cab

instrument panel A (WP 0311).

Remove relay 5 from cab power distribution

block (WP 0402).

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

Put

personnel cab FOAM SYSTEM switch to on position (WP 0004).

Check for 22 to 28

VDC between wire 2846 (white) from cab power distribution block relay 5, terminal 3 to

a known good ground.

If 22 to 28 VDC are not present, go to Step 12.

Step 6.

Turn battery disconnect switch to OFF position (WP 0007). Check for continuity across

wire 1640 (black) from cab power distribution block relay 5, terminal 2 to a known good

ground.

If there is no continuity, replace cab power distribution wire harness and

block (WP 0441).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION