TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
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TM 9-2815-220-24 ENGINE OVER SPEEDS 0011 00 THIS WORK PACKAGE COVERS: Troubleshooting Table and Diagnostic Tests INITIAL SETUP: Tools: General mechanic’s tool kit (item 121, WP 0176) Personnel Required Track Vehicle Repairer (2) 63H10 Equipment Conditions: Engine installed in vehicle. MALFUNCTION 1: Over speeds during vehicle operation. PROBABLE CAUSE CORRECTIVE ACTION a. Vehicle operating on steep downgrade. (1) Apply vehicle brakes to avoid over-speed. (1) Inspect cooling fans (WP 0053, Cooling Fan Inspection). b. Cooling fans malfunction. (2) Inspect cooling fan drives (WP 0129, Fan Drive Clutch Assembly and Associated Parts Replace/Repair). c. Governor improperly adjusted. (1) Adjust per TM 9-2910-212-34&P or replace fuel injection pump (WP 0101, Fuel Injection Pump Assembly Replacement). MALFUNCTION 2: Engine speed excessive with accelerator pedal released. PROBABLE CAUSE CORRECTIVE ACTION a. Accelerator or throttle stuck or disconnected. (1) Inspect throttle linkage (WP 0122, Throttle Control and Manual Fuel Shutoff Replace/Repair). (WP 0123 for 2DR) b. Fuel control stuck. (1) Refer to WP 0020, Fuel System Abnormal Conditions. c. Fuel injection pump governor defective. (1) Replace fuel injection pump (WP 0115, Fuel Injection Pump Assembly Replace/Repair). END OF WORK PACKAGE WP 0011 00-1 (2 blank)