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 797 of 1188

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

0106-7

DRAFT

0106

NOTE

•

Do not engage water pump engine during procedure.

Valve operations cab be checked

without water pump operations.

•

Valve motor operation can be checked either by noting vibration of valve assembly, or by

observing rotation of 7/16 in. hex at end of valve drive assembly worm gearshaft.

•

Do not remove cap from DRIVER MAIN INLET.

Water may be released from system

when valve is operated.

Step 9.

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

While an assistant pushes

pump operator’s panel DRIVER MAIN INLET valve control OPEN and CLOSE

buttons (WP 0004), check if DRIVER MAIN INLET valve control THROTTLED (yellow)

indicator illuminates and driver main inlet valve motor operates.

If indicator illuminates and valve motor operates, replace driver main inlet

valve drive assembly (WP 0388).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION