Preparatory Steps: • Disconnect the ground cable from the battery terminal. • Identify each electrical wire with a tag indicating location. 17 mm Remove the battery cable from the solenoid. 10 mm Remove the starting motor. Install the starting motor in the reverse order of removal. Torque Value: 43 N»m [32 ft-lb]
Turn the ignition switch to the “O N ” position. Do not start the engine. The solenoids (2) should click on. NOTE: If the engine has been running, the temperature is probably above 15°C [59°F], After the preheat period, the “ Wait to Start” light will go off and not flash. Set the multimeter scale… Read More »
Check the battery voltage. Minimum: 6.5 Volts. Check the thermistor. Disconnect the thermistor. Turn the ignition switch to the “O N ” position. NOTE: The ‘‘Wait to Start” light should come on. The solenoids should click on. Wait 20 seconds. The solenoids should click off. The “Wait to Start” light should begin flashing. NOTE: The… Read More »
When operating, the engine blockoroil pan heater should make an audible sound and the adjacent parts should be warm to the touch. Some heaters will operate continuously when plugged into the correct voltage electrical socket. Operate them only when the ambient temperature is below 0 °C [32°F].
Check for continuity. The sensor will have continuity only when coolant temperature is above 107°C [225°F].
Remove the lubricating oil pressure switch, install a gage, start the engine and measure the lubricating oil pressure. Minimum lubricating oil pressure: Low Idle (675 to 725 RPM) …………….69 kPa [10 PSI] High Idle ………………………………………….. 207 kPa [30 PSI] NOTE: The Pressure switch is set to actuate when oil pressure drops to 55 kPa [8… Read More »
When diagnosing problems with either the pressure switch or the temperature sensor, check for loose or corroded connections and for broken wires.
Check the battery and all wiring connections. Inspect the wiring for defects. Check all connections for tightness and cleanliness, including the slip connectors at the alternator and firewall, and connections at the battery. With ignition switch on and all wiring harness leads connected, connect a voltmeter from: A. Alternator “ BAT” (Delco 158I)“ B +… Read More »
Check the indicator lamp for normal operation as shown below. Switch Off, Lamp O n, Engine Stopped Disconnect the lamp lead at the ignition switch. If the lamp stays on, there is a short to a positive wire on the ignition side of the lamp. If the lamp goes out, there is a short in… Read More »
The terminals on the alternator are shown in this illustration. The “ R” (Delco) and “ W ” (Bosch) terminal provide one-half system voltage and is used to operate accessories such as the tachometer on generator sets. Trouble with the charging system may be indicated by the indicator lamp or ammeter.