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 273 of 1452

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

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WARNING

ICON 3

Remove rings, wristwatches, neck chains, and any other jewelry before working

around vehicle.

Jewelry can catch on equipment and cause serious injury.

Jewelry

and tools may short across electrical circuits and cause damage to equipment, or

severe burns or electrical shock to personnel.

Step 6.

Turn water pump engine off (WP 0022).

Open pump operator’s panel

housing (WP 0325).

Disconnect pump operator’s panel wire harness pump operator’s

panel pressure governor 12-terminal wire harness connector.

Start water pump

engine (WP 0022).

With a test lead set, check for 22 to 28 VDC on wire 4061 from

pump operator’s panel pressure governor 12-terminal wire harness connector,

terminal 10 to a known good ground.

If 22 to 28 VDC are present, replace pump operator’s panel pressure

governor control panel (WP 0332).