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 266 of 1452

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

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DRAFT

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END OF TASK

TFFT04387

Step 12.

Install circuit breaker P6 (WP 0412).

Remove relay P4 from pump house power

distribution block.

With a test lead set, check for continuity across wire 1118 from relay

P4 terminal 5 to pump house power distribution wire harness connector DP2,

terminal A.

If continuity is not present, repair wire 1118 in pump house power

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

pump house power distribution wire harness and block (WP 0457).

Step 13.

Connect pump operator’s panel wire harness pump house power distribution wire

harness connector DP2.

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

With a test lead set, check for 22 to 28 VDC from wire 1119 at relay P4, terminal 3 to a

known good ground.

a.

If 22 to 28 VDC are present, replace relay P4 (WP 0413).

b.

If 22 to 28 VDC are not present, repair wire 1119 in pump house power

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

replace pump house power distribution wire harness and

block (WP 0457).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION