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 1263 of 1452

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

0257-1

DRAFT

0257

FIELD LEVEL MAINTENANCE

HIGH PRESSURE WATER SOURCE INTAKE RELIEF VALVE SETTING

INITIAL SETUP:

ADJUSTMENT

NOTE

If water pressure is too high, intake relief valve may need to be adjusted.

After mission is

complete, reset intake relief valve setting to 125 psi (862 kPa).

1.

Loosen, but do not remove jamnut (1) on stem (2).

2.

Loosen, but do not remove stem (2) on valve (3).

Relief pressure is now set at 50 psi (345 kPa).

3.

Carefully tighten stem (2) until resistance is felt.

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TFFT00320

Tools and Special Tools

Tool Kit, General Mechanic’s: Automotive

(WP 0622, Item 27)

References

WP 0615, Fig. 37

Equipment Conditions

Water pump engine OFF (WP 0022)

Engine off (TM 9-2320-347-10)

Wheels chocked (TM 9-2320-347-10)