Event: Gear Box 2nd Gear

1. See “Drum Brake Release” for first sequence of this event.

2. The operator selects the Second Gear position of the selection switch and Directional Control Valves (1A and 3A) are energized and air pressure flows through the valves to the #1 and #2 ports of Air Cylinder (21).

3. The gearbox in shifted to the Second Gear position.

4. Exhaust from the #3 port of Air Cylinder (21) is vented through Directional Control Valve (2A).