WASHER-THRUST 2U7158 - Caterpillar

Illustration 1 g00779092
Manual Voltage Control Panel (Option) (1) Switch (OFF, AUTO, and MAN positions) (2) Voltage control rheostat (3) FuseThe manual voltage control is an option. The manual voltage control can be used to control the generator voltage when there is a failure in the generator regulator assembly. The manual voltage control will manually control the current flow to the exciter stator. The manual voltage control panel has a switch (1) and a voltage control rheostat (2) for the manual operating mode. The switch (1) is used to make the selection between the following positions: AUTO, MAN and OFF.In the AUTO position, the K65-12B voltage regulator controls the generator voltage.
Illustration 2 g01021519
The Cat K65-12B Voltage Regulator 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.
In the OFF position, the output voltage of the generator will go to zero.In the MAN position, the generator voltage is controlled by voltage control rheostat (2) .Note: The manual voltage control panel must not be installed in a location that is subject to engine vibrations or to outside weather.Note: When the manual voltage control is operating in the manual mode, it is not necessary for the K65-12B regulator to be connected to the generator. The manual control must remain connected to lines PM2 and PM3 of the permanent magnet generator. Refer to the Testing and Adjusting, "Wiring Diagrams" for proper connections.