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 HIGH IDLE (NO LOAD) ABNORMAL OPERATION 0010 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 or ground hop. MALFUNCTION 1: High idle speed too low (below 2500 rpm). PROBABLE CAUSE CORRECTIVE ACTION a. Accelerator or throttle linkage deficiency. (1) Inspect linkage (WP 0122, Throttle Control and Manual Fuel Shutoff Replace/Repair). (WP 0123 for 2DR) b. Low fuel pressure (fuel filter restriction). (1) Check filters (WP 0020, Fuel System Abnormal Conditions). c. Fuel injection pump governor defective. (1) Replace fuel injection pump (WP 0115, Fuel Injection Pump Assembly Replacement). MALFUNCTION 2: High idle speed too high: (above 2640 rpm). PROBABLE CAUSE CORRECTIVE ACTION a. Cooling fan malfunction. (1) Check fans (WP 0053, Cooling Fan Inspection). (2) Check fan clutch (WP 0129, Fan Drive Clutch Assembly and Associated Parts Replace/Repair). b. Fuel injection pump governor defective. (1) Replace fuel injection pump (WP 0115, Fuel Injection Pump Assembly Replacement). END OF WORK PACKAGE WP 0010 00-1 (2 blank)