On articulated ride-on rollers steering is achieved by actuating a hydraulic ram (or rams) which is controlled by turning the steering wheel. a) How does the engine supply the oil flow and b) what hap?

a) The engine supplies oil flow to the hydraulic system by driving a hydraulic pump, which converts mechanical energy into hydraulic energy, generating pressurized oil that circulates through the system.

b) When the steering wheel is turned, it activates the hydraulic rams through control valves, directing the pressurized oil to either side of the ram, which in turn moves the rollers in the desired direction, allowing for articulated steering.