TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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TM 9-2320-387-24-l REFERENCE INFORMATION -I Replace hoses (para. 8-25). . i -I 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