The primary and secondary functions of the steering cylinders are:
Primary Function: Articulated Steering: The Cat 735 is an articulated haul truck, meaning it has a hinge (articulation joint) between the tractor (front) and trailer (rear) sections. The steering cylinders are the actuators that pivot these two sections horizontally relative to each other, enabling the truck to turn left or right. This provides exceptional maneuverability in tight spaces like loading areas and haul roads.
Secondary Function: Oscillation Control: The steering system, through its cylinders and valves, also helps manage frame oscillation. On uneven terrain, the tractor and trailer sections can pivot slightly vertically to keep all wheels in contact with the ground. The steering cylinders, in conjunction with the oscillation joint, contribute to vehicle stability and traction without compromising steering control.
Integration with Steering System: The cylinders work as part of a larger, closed-center hydraulic system. They are controlled by a steering hand pump (in the cab) and a priority valve that ensures steering always receives hydraulic priority over other functions (like hoisting and dumping), which is critical for safety.
This 211-0603 steering cylinder is used for 730 725 735 caterpillar truck.
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