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TM-9-2320-361-24-1 Page 100

TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks

Page 100 of 1176


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TM 9-2320-361-24-1 0006 00 0006 00-4 MECHANICAL SYSTEMS TROUBLESHOOTING - UNIT (Contd) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 4. ENGINE STOPS DURING NORMAL OPERATION (Contd) 4. Check air induction system for major restrictions. 5. Check idle speed (WP 0070 00). If air induction system is restricted, clean or replace defective components (WP 0051 00–WP 0054 00). If idle speed is set below specifications, adjust (WP 0070 00). 5. ENGINE STOPS WHEN ACCELERATOR IS RETURNED TO IDLE POSITION 1. Check air induction system for restrictions. 2. Check idle speed (WP 0070 00). If air induction system is restricted, clean or replace defective components (WP 0051 00– WP 0054 00). If idle speed is set below specifications, adjust (WP 0070 00). 6. ENGINE MISFIRES DURING OPERATION 1. Check air cleaner indicator (TM 9-2320-361-10). 2. Check for air or water in fuel system. If red appears at indicator window, inspect air intake head for restrictions. If restrictions are not present, replace air cleaner element (WP 0052 00). Perform WP 0006 00, table 1, malfunction 2, step 2. Repair or replace as required. 7. POOR ACCELERATION AND/OR LACK OF POWER 1. Check air cleaner indicator (TM 9-2320-361-10). 2. Check air induction system for restrictions. 3. Check fuel system for restrictions. 4. Check exhaust system for restrictions. 5. Inspect accelerator pedal and throttle lever for full travel. 6. Check throttle linkage for binding and sticking. 7. Check vehicle for dragging brakes, low tire inflation, or cargo load over limit (TM 9-2320-361-10). If red appears at indicator window, inspect air intake head for restrictions. If restrictions are not present, replace air cleaner element (WP 0052 00). If air induction system is restricted, clean or replace defective components (WP 0051 00 – WP 0054 00). Replace restricted or damaged parts (WP 0060 00). If defects are evident during check, adjust or replace components (WP 0073 00) (For M50A3 series vehicles, refer to WP 0074 00). Adjust travel on throttle lever (WP 0070 00). If linkage is binding or sticking, replace throttle linkage (WP 0070 00). 1. Adjust brakes, tire pressure, and cargo to proper limits. 2. Correct overload condition (TM 9-2320-361-10). Table 1. Engine Troubleshooting Procedures (Contd).