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| Illustration 1 | g03275456 |
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General Information | |
The steering system shares a common hydraulic tank with the propel system, the vibratory system, and the fan system. The steering pump provides the oil to operate the steering system.
The steering system section of this presentation is divided into segments. The first segments show the location of all components on the machine which are part of the steering system. A brief discussion of each component is provided in these segments.
The last section explains the operation of the electrical system and the hydraulic system. Schematics are used in this segment to trace current through the electrical system and hydraulic oil through the hydraulic system.
When steering the split drum machine, the propel system allows each drum half to rotate at a different speed. The outside drum half rotates faster than the inside half, acting like a differential.
Note: Refer to "Propel System" for additional information about the components and controls of the propel system.
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| Illustration 2 | g03275500 |
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Propel Control System (1) Machine ECM number one (2) Hydraulic temperature sender (3) Steering encoder (4) Steering angle position sender (5) Propel lever (6) Seat position switch 1 (7) Seat position switch 2 (8) Warm up valve solenoid (9) Steering shunt solenoid (10) Front counterclockwise solenoid (11) Front clockwise solenoid | |
Note: The blue lines in the above illustration indicate an input signal. The red lines indicate an output signal. The red and blue lines indicate two-way communications.
Machine ECM number one (1) energizes steering shunt solenoid (9) in order to enable the steering system.
Machine ECM number one (1) monitors input signals from steering encoder (3) and steering angle position sensor (4). The machine ECM number one monitors two seat position switches (6) and (7) in order to determine which direction the operator station is facing. At the same time, the machine ECM number one monitors the position of propel lever (5).
Machine ECM number one (1) evaluates the input signals and determines if any output signals should be sent to steering solenoids (10) and (11).
Machine ECM number one (1) monitors the signal from hydraulic temperature sender (2). When the system determines that the hydraulic oil temperature is below operating requirements, the machine ECM number one energizes warm up valve solenoid (8).