Hydrostatic steering drift?

UPFord · Mar 25, 2017

I have a 1989 445C industrial. When traveling on the road, the tractor drifts slowly to the right, requiring an occasional left turn input to drive straight. Otherwise the power steering works well in both directions and with heavy loads in the bucket. I realize that with hydrostatic power steering, the steering wheel is not directly attached to the tie rods.

Is there any cause for concern with this?

Thanks:

Fordfarmer · Mar 25, 2017

Sounds like every hydrostatic steer tractor I've driven. Some are worse than others.

Texasmark1 · Mar 25, 2017

May be a seal leaking slightly; course the seal could be the interface between a bored steel block and a steel piston with no rings. You know that you can rotate the steering wheel without turning the tires with the engine off. The directional valve moves to one side or the other to select which hole the fluid runs when the pump is running so it seems to me that if you are leaking to one side you will be weak on that side and steering will drift to the other.

Bern · Mar 26, 2017

A very small amount of drift is normal with a hydrostatic steering system, however a larger amount most likely means you have an internal leak in the steering cylinder. Test the cylinder just like you would any other cylinder, such as on the loader, for an internal leak.

Hydrostatic steering drift?

UPFord

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Fordfarmer

Well-known Member

Texasmark1

Well-known Member

Bern

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