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 0008 00 0008 00-5 MECHANICAL SYSTEMS TROUBLESHOOTING - DIRECT SUPPORT (Contd) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 6. POOR ACCELERATION AND/OR LACK OF POWER (Contd) 6. Check engine valve train operation and valve lash adjustment (WP 0031 00). 7. Check engine cylinder compression. Refer to WP 0008 00, table 1, malfunction 3, step 2. Adjust as necessary (WP 0031 00). Refer to WP 0008 00, table 1, malfunction 11, tests 1 and 2. 7. ENGINE DELIVERS EXCESSIVE BLACK SMOKE Refer to WP 0008 00, table 2, malfunction 4. Replace malfunctioning components. 8. ENGINE SURGES Perform WP 0008 00, table 2, malfunction 1. Replace malfunctioning components. 9. ENGINE MISFIRES DURING OPERATION 1. Verify fuel injector nozzle feed lines are correctly installed in fuel injector pump hydraulic head (WP 0068 00). 2. Check fuel injector nozzle operation. 3. Check fuel injection pump operation. 4. Check engine valve train operation and valve lash adjustment (WP 0031 00). 5. Check engine cylinders compression readings. If fuel injector nozzle feed lines are incorrectly installed, remove and install in correct location (WP 0068 00). Refer to WP 0008 00, table 2, malfunction 1, step 2. Refer to WP 0008 00, table 2, malfunction 3, step 2. Refer to WP 0008 00, table 1, malfunction 3, step 2. Adjust if necessary (WP 0031 00). Refer to WP 0008 00, table 1, malfunction 11, tests 1 and 2. 10. ENGINE STOPS DURING NORMAL OPERATION Perform Engine Troubleshooting Procedures, WP 0008 00, table 1, malfunction 1. Replace defective components as necessary. 11. EXHAUST COLOR BLUE DURING NORMAL OPERATION NOTE Blue exhaust indicates presence of excessive engine oil in cylinder combustion chamber. Test 1. Perform an engine cylinder compression test. 1. Check for proper valve and rocker arms movement and ensure they are adjusted to specifications (WP 0031 00). 2. Cutoff fuel supply at fuel pump by removing fuse (WP 0059 00). 3. Ensure fuel batteries are fully charged and starter operates normal. 4. Remove all injectors in cylinder head. 5. Connect compression gauge and necessary adapter to injector port of number 1 cylinder. Table 1. Engine Troubleshooting Procedures (Contd).