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JD 520 Power Steering Problems.

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Bob

07-10-2002 14:18:04

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A fella asked me to post this question. His JD 520 Power steering turns to the right immediately when he tries to start the tractor. Can not turn it to the left until he shuts it off. Any help would be appreciated. Please e-mail your answers as I don't check in here very often

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ChuckW

07-10-2002 17:11:33

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Re: JD 520 Power Steering Problems. in reply to Bob, 07-10-2002 14:18:04

I've found that these units are bad about breaking a vane pin. Generally the first thing I do is pull the housing and check the vanes, pins and put in new rectangle seals....then go for the adjustments, tear down the control assy...renew the rotator pins, etc. A lot of wear occurs in these units and most of them have never been rebuilt.

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Clooney

07-10-2002 14:30:21

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Re: JD 520 Power Steering Problems. in reply to Bob, 07-10-2002 14:18:04

Bob, while it could be almost anything from a flow control problem, to a worn actuating valve assembly, to worn bearings on the worm, to misadjusted helix screw, to wear on other parts, the usual cause is a misadjustment of the steering valve housing [it has to be centered to work properly, & even a very slight movement fore or aft can cause the problem you describe.
~To adjust, loosen the 4 bolts shown & bump the steering valve housing in the direction shown to improve the turnability in the direction shown [in your case it turns hard left]...

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