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 FAILS TO START AT NORMAL CRANKING SPEED 0008 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: Cylinders not firing (insufficient fuel or incomplete combustion). PROBABLE CAUSE CORRECTIVE ACTION a. Out of fuel. (1) Refuel. b. Air in fuel system. (1) Bleed and purge system (WP 0020, Fuel System Abnormal Conditions). (1) Operate engine intake manifold heater to assist in starting (refer to pertinent vehicle manual). c. Cylinders too cold. Applies in cold weather. (2) If engine does not start, check heater operation as follows: PROCEDURE OBSERVATION ANALYSIS Heater Operational Check Hold fuel shut-off (engine "stop") switch and crank engine. While cranking engine, engage manifold heater switch and hand operate purge pump. Evidence of heat indicates heater operation is normal. Place hand on intake manifold heater housing. Check both sides of engine. Note housing temperature (warm or hot to touch). No heat indicates heater is inoperative. Heater Voltage Checks NOTE Disconnect purge pump fuel hose quick-disconnect coupling at engine before performing test. WP 0008 00-1