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Case Tractors Discussion Forum
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4494 rear steering

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timmis

04-04-2010 18:26:43




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My 4494 rear steering locked to 1 side - I tried to overide the control box by running a 12v source to either side of the control selenoid but get no response -ground is OK -- am I thinking right that the selenoid is bad - the 2 sides show different levels of resistance. Any idea on replacement cost or procedure. Thanks




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4435

04-04-2010 20:41:52




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 Re: 4494 rear steering in reply to timmis, 04-04-2010 18:26:43  
I don't think you want to apply 12 volts to that solenoid! I may be wrong and will be again.

If the little filter don't fix it you may be in for an adjustment of the internals of the steering valve takes a couple 2000 psi gauges and some fittings.

This from doing my 4490 if it is the same.

Tom



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turbo

04-04-2010 19:08:41




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 Re: 4494 rear steering in reply to timmis, 04-04-2010 18:26:43  
Did the rear steer turn to the right? If so, the small metal screen filter on the rear steer valve is restricted or plugged. The rear steer valve is a pilot operated valve with the pilot oil passing through the filter. It is under the 1 inch hex plug on the valve. It protrudes from the valve a little over and inch. The screen is a little bigger than a sprayer screen in a nozzle tip and watch for the spring. Also you need to change the rear steer filter next to the valve. This is the first thing to check and it is a cheap repair. Fixes problem 90% of the time.

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timmis

04-04-2010 19:41:35




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 Re: 4494 rear steering in reply to turbo, 04-04-2010 19:08:41  
Ok - the wheels are turned to the right -- I"ll check the filter out on Monday. So the selenoid isn"t a concern even though it"s testing different ohms? Am I thinking right that a 12v applied to the 2 different non ground prongs should move the wheels? Is there any bleeding procedure for the valve? It does make sense with what you"re saying. I kind of want to know how it works -- the rear steer is intermitant- i think the sensor is out of adjustment - I"d like to be able to manually center the wheels if the sensor won"t work that day. Thanks a bunch - I"ll sleep a little easier knowing I may not have to replace that valve.

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dwag

04-05-2010 10:36:11




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 Re: 4494 rear steering in reply to timmis, 04-04-2010 19:41:35  
a reg 9v batt works well for bypassing controller. Touch 1 post to grnd stud and other to either post /stud. I vote for the filter/screen thing as turbo said.



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