Corrective Action: Troubleshoot the oil-pump motor.
Command the spindle to operate.
Note: There is a voltage output to the gearbox oil pump when the spindle operates.
Monitor the motor fan on the gearbox oil pump. If the motor fan on the gearbox oil pump does not operate, make sure the oil pump receives the correct voltage. Use a multimeter with needle-tip probes to measure the voltage across the cable connector for the gearbox oil pump.
Note: Do not measure the voltage with the oil pump cable disconnected from the 300A cable.
The measured voltage must be 120 VAC. If the voltage is correct and the pump does not operate, go to Section 6.