TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
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TM 9-2320-361-24-1 0006 00 0006 00-2 MECHANICAL SYSTEMS TROUBLESHOOTING - UNIT (Contd) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 1. ENGINE WILL NOT CRANK (Contd) 6. Check vertical exhaust system and turbocharger for presence of water. Remove exhaust elbow from turbocharger (WP 0073 00). (For M50A3 series vehicles, refer to WP 0074 00). 1. If water is present in exhaust elbow, disassemble and drain exhaust system (WP 0073 00). (For M50A3 series vehicles, refer to WP 0074 00). 2. If water is present in turbocharger housing, identified by water on turbocharger fins or hub, replace turbocharger (WP 0057 00). 2. ENGINE CRANKS BUT WILL NOT START 1. Check air cleaner indicator (TM 9-2320-361-10). WARNING • Diesel fuel is flammable. Do not perform troubleshooting checks near open flame, sparks, or electricity. Injury or death to personnel may result. • Compressed air source must not exceed 30 psi (207 kPa). Wear eyeshields when cleaning with compressed air. Failure to wear eyeshields may result in injury to personnel. 2. Turn accessory switch to ON position and drain 1/2 pint (0.25 liter) of fuel from primary fuel filter, secondary fuel filter, and final fuel filter. Check for contaminated fuel. 3. Check for white exhaust smoke during cranking. 1. If red appears at indicator window, inspect air intake head for restrictions. If restrictions are not present, replace air cleaner element (WP 0052 00). 2. Reset air cleaner indicator (TM 9-2320-361-10). 1. If water or contamination are present, remove fuel tank (WP 0060 00). 2. Clean and flush entire fuel system. Dry system with compressed air. 1. If white smoke can be seen, air may be in fuel system. Bleed fuel system (WP 0064 00). 2. If white smoke can be seen, coolant may be inside combustion chambers. If coolant is present on dipstick, check cylinder heads and gaskets for defects (WP 0027 00). Table 1. Engine Troubleshooting Procedures (Contd).