TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
Page 157 of 1563
TM 9-2815-220-24 GENERATOR ABNORMAL OPERATION (650 AMPERE) 0021 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: Not charging (indicator reads in “yellow” same as battery reading with engine stopped and master switch “ON”. PROBABLE CAUSE CORRECTIVE ACTION (1) Check battery condition. a. Battery cables or terminals loose, corroded, broken or disconnected (connector nuts not tightened). (2) Inspect and repair cables and terminals (refer to pertinent vehicle technical manual). (1) Check circuits and voltage regulator (refer to pertinent vehicle technical manual). b. Defective electrical circuits or voltage regulator. (2) Repair and replace as necessary (refer to pertinent vehicle or generator technical manual). (1) Check circuits and generator (refer to pertinent vehicle or generator technical manual). (2) Repair and replace as necessary (refer to pertinent vehicle technical manual). (3) Replace generator (WP 0051, Generator Replacement - 650 Ampere). c. Generator failed. (4) Assure that generator oil hoses are free of obstruction. d. Generator drive gear assembly failed. (1) Perform Generator Drive Gear Assembly Torque Check as follows: PROCEDURE OBSERVATION ANALYSIS Remove 1/8-inch pipe plug located in center of end plate and install 200 psi gauge. Start and warm up engine at idle speed (675-725 rpm) to operating temperature (140 °F). Oil pressure 100 ± 10 psi. Generator oil pump operation is normal, the generator is rotating and the drive coupling is functioning. WP 0021 00-1