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 COOLING SYSTEM DEFICIENCIES 0017 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: Engine overheating (evidenced by high oil temperature, low oil pressure, and warning lights "ON"). PROBABLE CAUSE CORRECTIVE ACTION a. Oil cooler screens and fins blocked with debris. (1) Clean screens and oil cooler finned air passages. NOTE Inspect for oil leaks and avoid oil spillage. b. Restricted cooling air inlets (blocked with debris). (1) Clean air inlets and grilles. c. Oil level overfull. (1) Refer to WP 0031, Engine Oil Replacement. d. Seasonal grade of oil improper (too heavy) for ambient temperature. (1) Check oil in engine. Drain and refill with proper grade of oil (refer to pertinent Vehicle Lubrication Order). e. Cooling fan clutch slipping, fan drive failed, or blades eroded. (1) Check fan rotation and clutch torque (WP 0045, Cooling Fan Clutch Slip Test). Inspect fan blades (WP 0053, Cooling Fan Inspection). Repair as required. f. Cooling shroud, baffle, deflector or plates loose, cracked or broken. (1) Inspect and repair as required. g. Oil cooler thermostatic valve and/or bypass valve defective. (1) Remove valves and replace. Go to WP 0072, Oil Cooler Replacement (Engine and Transmission). h. Engine over-powered due to improper fuel adjustment. (1) Replace fuel injection pump (WP 0115, Fuel Injection Pump Assembly Replacement). WP 0017 00-1