Selective Transition Switch 9. Cab Heater 10. Control Switches 11. Feed Valve 12. High Voltage Cabinet 13.
Backward transition is made by closing the throttle to idle the same as in all other switchers.
The reverse lever changes direction of movement of the locomotive. It operates the reverser drum in the high voltage cabinet which reverses the traction motors, as described in Section 1. The reverse lever must be in neutral to start the engine. The switch box is located alongside and to the left of the controller. Control - to energize the engine starting, reversing and S contactor circuits, and through the generator field button to the P contactor, transition and field circuits.