KIT-BEARING 3939501 - Caterpillar

Illustration 1 g00825354
VR6 Voltage Regulator (1) Factory calibration adjustment (2) Voltage adjustment
Illustration 2 g01021519
The Cat VR6 presents an electrical shock/electrocution hazard. This hazard will cause serious injury or death.Service by trained personnel only.The terminals and heat sinks are live at hazardous voltages when power is applied and for up to 8 minutes after power is removed.
Do not operate generator at a voltage greater than 5% above the name plate rating.
The factory calibration adjustment (1) should be used by the factory technicians only. The following procedure can be used if the factory calibration has been disturbed:
Remove the seal from the factory calibration adjustment (1) .
Start the genset.
Run the genset at no load.
Turn the factory calibration adjustment (1) in a fully counterclockwise direction.
Turn the voltage adjust potentiometer (2) in a fully clockwise direction.
Slowly turn the factory calibration adjustment (1) CW until the voltage on 20-22-24 is 252 1 VAC for 60 Hz (226 1 VAC for 50 Hz).
Turn the voltage adjust potentiometer (2) CCW.
Verify that the voltage on 20-22-24 is between 156 VAC and 180 VAC. The unit is calibrated.
Seal the factory calibration adjustment (1) .