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 840 of 1188

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

0109-2

DRAFT

0109

TFFT02688

NOTE

•

Valve operation can be checked 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 NO. 1 DRIVER SIDE DISCHARGE.

Water may be released from

system when valve is operated.

Step 2.

Open pump house panel A (WP 0539). While an assistant pushes pump operator’s

panel NO. 1 DRIVER SIDE DISCHARGE valve control OPEN and CLOSE

buttons (WP 0004), check if No. 1 driver side discharge valve operates to open and

close positions.

If No. 1 driver side discharge valve does not operate to open and close

positions, go to Step 9.

Step 3.

While an assistant monitors the operation of No. 1 driver side discharge valve.

Push

pump operator’s panel NO. 1 DRIVER SIDE DISCHARGE valve control OPEN and

CLOSE buttons (WP 0004).

Check if NO. 1 DRIVER SIDE DISCHARGE valve control

opened (green) and closed (red) indicators illuminate before No. 1 driver side discharge

valve is fully open and closed.

If NO. 1 DRIVER SIDE DISCHARGE valve control indicators illuminate

before No. 1 driver side discharge valve is fully opened or closed, go to

Step 13.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION