TM-5-4210-249-13-P-2

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 2 OF 4

TM-5-4210-249-13-P-2 - Page 232 of 1452

TM 5-4210-249-13&P-2

0141-2

DRAFT

0141

TFFT03560

Step 1.

Remove pump house panel S (WP 0540).

Disconnect valve control wire harness water

tank drain control valve connector. Turn battery disconnect switch to ON

position (WP 0007).

Put pump operator’s panel WATER TANK DRAIN switch to OPEN

position (WP 0004).

With a test lead set, check for 22 to 28 VDC between valve control

wire harness wire 4053 (brown) at water tank drain control valve connector, terminal 1

and a known good ground.

If 22 to 28 VDC are not present, troubleshoot Water Tank Drain Valve Does

Not Operate When Selected (WP 0122).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION