TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
Page 163 of 1563
TM 9-2815-220-24 INTAKE MANIFOLD HEATER ABNORMAL OPERATION 0023 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: Manifold heater inoperative. PROBABLE CAUSE CORRECTIVE ACTION a. Electrical or fuel system malfunction. (1) Check manifold heater operation. Repair or replace defective parts as indicated by the following tests. PROCEDURE OBSERVATION ANALYSIS Manifold 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 manifold 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 manifold heater is inoperative. Replace manifold heater (WP 0088, Manifold Heater Assembly and Related Parts Replacement). WP 0023 00-1