| 摘要 |
A dual counterbalance valve is added in the hydraulic lines between the steering unit and the steering cylinders on an implement to maintain pressure in the steering lines by metering hydraulic fluid to and from the cylinders under pressure so that the steered wheels stay in phase. Since the steering system is kept under constant pressure, the wheels can only be steered by the steering unit and not by tractive soil forces so toe in and toe out problems are eliminated without need for a mechanical tie rod connecting the steered wheels. The valve is added in-line to the system so that current machines can be easily retrofitted.
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