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 577 of 1188

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

0094-31

DRAFT

0094

TFFT03732B

Step 37.

Connect air lines at eductor valve.

Disconnect valve control wire harness eductor

control valve connector.

Put cab or pump operator’s panel FOAM SYSTEM switch to

on position (WP 0004) and release.

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

between valve control wire harness wire 4054 (yellow) at valve control wire harness

eductor control valve connector, terminal 1 and a known good ground.

If 22 to 28 VDC are not present, repair wire 4054 in valve control wire

harness if repairable (TM 9-2320-325-14&P), or replace valve control wire

harness (WP 0463).

Step 38.

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

Check for continuity across

valve control wire harness wire 2200 (black) from valve control wire harness eductor

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