TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
Page 129 of 1176
TM 9-2320-361-24-1 0008 00 0008 00-1 FIELD TROUBLESHOOTING 2-1/2 TON, 6X6, M44A2 SERIES TRUCKS (MULTIFUEL) MECHANICAL SYSTEMS TROUBLESHOOTING - DIRECT SUPPORT NOTE Test run engine after each completed action. Table 1. Engine Troubleshooting Procedures. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 1. ENGINE WILL NOT CRANK Inspect fuel injection pump for seizure. 1. Remove drive gear access cover (WP 0069 00). 2. Remove injection pump drive gear (WP 0069 00). 3. Manually turn injection pump shaft at center hub screw. WARNING • Ensure fuel shutoff valve is off and remove throttle cable before cranking engine. Failure to do so may result in injury to personnel. • All personnel must stand away from engine during crank test. Wear eye protection during crank test. Failure to stand clear and wear eye protection may cause injury or death to personnel. 4. Check engine cylinders for fluid locked pistons. Remove all fuel injector nozzles (WP 0067 00). Crank engine with starter. If shaft will not rotate, replace (WP 0069 00) or repair fuel injection pump (WP 0446 00). 1. If crankshaft turns freely, identify any fluid levels expelled from cylinders. If fluid sample is identified as coolant, proceed to step 11. 2. If fluid sample is identified as fuel, refer to WP 0008 00, table 2, malfunction 4.