TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
Page 202 of 1176
MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 2. STARTER MOTOR OPERATES, BUT ENGINE CRANKS SLOWLY (Contd) 3. With engine stop control handle pulled out, crank engine for 30 seconds (TM 9-2320-361-10). Voltage reading should be 19 VDC or more during cranking. 4. Disengage engine stop control handle (TM 9-2320-361-10). 1. If battery voltage is not satisfactory, go to WP 0012 00, table 1, malfunction 1, test 1. 2. If battery voltage is satisfactory, replace starter motor and solenoid assembly (WP 0088 00). If engine still cranks slowly, replace batteries (WP 0127 00). TM 9-2320-361-24-1 0012 00 0012 00-18 BATTERY AND CHARGING SYSTEM TROUBLESHOOTING (Contd) Table 2. Starting System Troubleshooting Procedure (Contd). CHARGING SYSTEM (60 AMP) POWER ACCESSORY SWITCH SLAVE RECEPTACLE POS NEG STARTER RELAY STARTER SOLENOID 10 14 74A 74 27 27 1 11 25 49 50 6 2 68 7 1 214 568 74B B D C A B A 1 4 3 2 VOLTMETER 60-AMP ALTERNATOR STARTER MOTOR 12-VOLT BATTERY 15-AMP HORN CIRCUIT BREAKER INPUT FIELD VOLTAGE +28 VDC OUTPUT RH GROUND FRAME START SWITCH D C B A