TM-9-2320-387-24-1

TRUCK, UTILITY: S250 SHELTER CARRIER, 4X4, M1113

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE, VOLUME 1

DECEMBER 1997

CHANGE 1

TM-9-2320-387-24-1 - Page 242 of 1205

TM 9-2320-387-24-l

REFERENCE INFORMATION

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Replace hoses (para. 8-25).

.

i

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STEKE-R

TEST 50

0 TO

1,000

PSIG PRESSURE

1. Connect transducer

to valve after removing

connector (para 8-25).

Do offset

test.

2. Connect BLUE pressure transducer

to A W4

cable.

Make sure the system under test is not

pressurized.

3. Turn on system and read pressure.

Measure the pressure at the valve outlet.

Remove

the fan drive hose and connector from the valve body

and screw transducer

into the valve. Start the engine

and look for leaks.

Replace control valve and/or fan drive (para. 8-25 or

3-60).

Check to see if hoses are blocked prior to

replacing parts, and perform back flush procedure

(para. 8-25).

If pressure in the fan drive hose is not at least 90 psi

(621 kPa). perform back flush procedure (para. 8-25).

Recheck pressure. If pressure is not at least 90 psi

(621 kPa). replace control valve.

ff pressure in the fan drive hose is at least 90 psi

(621 kPa). check for blockage in hose between the

control valve and fan drive. If hose is not blocked,

replace fan drive (para. 3-60).

ENGINE COOLING

INLET HOSE

,AETURN

HOSE

NO STEP

FAN DRIVE

2-l 85