TM-9-2320-387-10 HMMWV Operator Manual Download
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TM 9-2320-387-10 3-2 Section II. TROUBLESHOOTING 3-5. GENERAL a. Table 3-1 lists the common malfunctions which you may find during the operation or maintenance of the vehicles or their components. You should perform the tests/inspections and corrective actions in the order listed. b. This manual cannot list all malfunctions that may occur, nor all tests or inspections and corrective actions. If a malfunction is not listed or is not corrected by listed actions, notify your supervisor. NOTE • Hydrostatic lock is caused by the entry of substantial amounts of water into the engine through the air intake system and subsequent contamination of the fuel system. Hydrostatic lock most frequently occurs during or just after fording. Water is forced into the air intake system, is drawn into the engine, and effectively locks up the engine. • Notify unit maintenance if you suspect hydrostatic lock and they will test the engine. Troubleshooting, table 3-1, contains instructions that will help the operator identify and correct simple vehicle malfunctions. The table also helps the operator identify major mechanical difficulties that must be referred to unit maintenance. The listing of possible malfunctions come under major vehicle headings. They are: • Engine • Heating system • Transmission • Transfer case • Brakes • Wheels and tires • Steering • Winch • Up-armored carrier 3-6. TROUBLESHOOTING PROCEDURES