TM 9-2320-361-34 Table 2-1. Mechanical Troubleshooting (Contd). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 7. Step 8. Step 9. Step 10. Step 11. Check turbocharger housing for presence of water, identified by water on turbocharger fins or hub. If water is present, replace turbocharger (para. 5-6). Test run engine. If engine operates with unusual sounds or vibrations, perform malfunction 16 and/or 17. Check intake manifold and gasket. Remove intake manifold and gasket and inspect for defects (para. 3-17). If intake manifold is defective, replace (para. 3-17). Test run engine. a. If engine operates with unusual sounds or vibrations, perform malfunction 16 and/or 17. b. If engine exhaust color remains white during test run, check cylinder heads and gaskets. Remove cylinder heads and gaskets and inspect for defects (para. 3-3). If cylinder heads or gaskets are defective, replace (para. 3-3). Test run engine. If engine exhaust color remains white during test run, replace engine (para. 3-18). END OF TESTING! 2. STARTER CRANKS ENGINE SLOWLY Step 1. Check electrical systems (TM 9-2320-361-20). Step 2. Check fuel injection pump for seizure (malfunction 1, step 1). Step 3. Check internal engine components for seizure (malfunction 1, steps 2b and 4). END OF TESTING! 3. ENGINE CRANKS BUT WILL NOT START Step 1. Check fuel delivery systems (malfunctions 18 through 21). Step 2. Visually check valve train operation and that valve lash is within specifications (para. 3-7). a. If valve train is not operating, check camshaft and crankshaft gears for damaged or missing teeth. Remove timing cover (para. 3-8) and replace both gears (TM 9-2815-210-34-2-1) if either gear is damaged. b. If valve lash is not within specifications, adjust valve lash (para. 3-7). c. If valve lash cannot be adjusted within specifications, check valve train components for wear or defects (para. 3-7). Replace worn or defective components. Step 3. Check engine cylinders for low compression readings (malfunction 11, steps 1 and 2). a. b. If compression readings are low or zero, perform wet compression check (malfunction 11, steps 1 and 2). If wet compression readings increase 50 psi (345 kPa) or more, piston rings or cylinder bores may be worn. Replace engine (para. 3-18). END OF TESTING! 2-7