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 609 of 1188

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

0096-13

DRAFT

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TFFT04423

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 20.

Remove pump house panel S (WP 0540).

Turn battery disconnect switch to OFF

position (WP 0007).

Disconnect valve control wire harness foam B shutoff control valve

connector.

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

Put pump

operator’s panel FOAM SYSTEM switch to ON position (WP 0004).

Put pump

operator’s panel FOAM TANK switch to “B” position (WP 0004).

With a test lead set,

check for 22 to 28 VDC between wire 2843 (red) from valve control wire harness foam B

shutoff control valve connector, terminal 1 to a known good ground.

If 22 to 28 VDC are not present, go to Step 23.

Step 21.

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

With a test lead set, check

for continuity across wire 2200 (black) from valve control wire harness foam A shutoff

control valve connector, terminal 2 to a known good ground.

If there is continuity, replace shutoff control valve manifold (WP 0427).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION