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 621 of 1188

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

0097-7

DRAFT

0097

CAUTION

•

Do not mix different types or brands of foam agent in foam cells or piping.

Mixing

of different foam agents (either type or manufacturer) may cause deterioration of

foam agent, improper proportioning and poor performance in a fire situation.

Mixing of Class A and Class B foam agents may result in a chemical reaction which

can create globules, which can clog orifices and cause system failure.

•

Failure to flush system after each foam use could result in equipment damage.

NOTE

Do not open foam agent supply tanks while performing flush procedures.

Step 7.

Start water pump engine (WP 0022).

Put pump operator’s panel FOAM FLUSH switch

to on position (WP 0004).

Flush foam system (WP 0031).

Put pump operator’s panel

FOAM FLUSH switch to off position (WP 0004).

Put cab FOAM SYSTEM switch to on

position (WP 0004).

Put FOAM SELECT switch to “A” position (WP 0004).

Put bumper

turret POWER switch to

|

(on) position (WP 0004).

Push bumper turret control foam

agent button (WP 0004).

Flush foam system (WP 0031).

Retest system with foam B

selected.

Check if foam A and Foam B is delivered from bumper turret.

a.

If foam is delivered from bumper turret, fault corrected.

b.

If foam is not delivered from bumper turret, replace foam system

multi-metering valve (WP 0292).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION