hydraulic steering

[darmstrong2319]

You may have to loosen the fittings on steering cylinder so front tires can turn a little bit but it will work. I had a stump break the hydraulic filter off a 2615 gear tractor one time lost fluid so no steering. Had about 150 ft to go to get to trailer an being geared tractor drove right up on trailer steering with brakes only so if towing it an letting pressure of steering cylinder it should work

 

[Xfaxman]

With no fluid moving and no fluid pressure, it can't push the cylinders in or out to steer. How is it your 'pieces' work without a direct linkage or hydraulic pressure?

I don't know what the system is called, but the steering valve turned by the steering wheel acts as a pump to move the steering cylinder, if the engine isn't running. It is slow, but it will move lock to lock.

 

[JerryK]

That's about the only way I could figure to do it.

I do have plenty of time to think since my wife died unexpectedly about 6 months ago. Too much time.

Sorry to hear that, but we have to carry on. My wife died in 2014. Now there is no one to curb my tractor buying........ and the frying pan wounds are finally starting to heal.

 

[dickfoster]

I don't know what the system is called, but the steering valve turned by the steering wheel acts as a pump to move the steering cylinder, if the engine isn't running. It is slow, but it will move lock to lock.

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It's called a hydraulic steering valve HSV or sometimes is called an orbital valve that is used in almost any kind of hydrostatic steering system. It's just a valve that meters and directs pressure from the hydraulic pump to the steering cylinder in relation to where the steering wheel is pointing. It can generate no pressure on it's own.

Although this link is on a rock crawling board, it is descriptive of the valve and the role it plays in a hydraulic steering system. All hydraulic steering systems work pretty much the same whether they are in a small tractor to those huge dump trucks used in open pit mines. Pirate4x4.Com - Extreme Four Wheel Drive

 

[Jabonee]

Since there is no standard hardware connection between the front wheels and the steering shaft, only a couple of hydraulic cylinders, if one is unable to start the engine and needed to pull it somewhere, how would you steer it?

You will have a limited amount of steering till the circuit is pumped dry by the steering valve(geroter type pump/valve} The wheel will be hard to turn. when the circuit is empty and the wheel turns easy just crank the engine to refill the system.:confused3: