Posted by Bob M on April 16, 2009 at 09:35:23 from (151.190.254.108):
In Reply to: Char-Lynn PS Super M posted by Chris NW Ind on April 16, 2009 at 08:45:56:
Chris - First thing I�d do is burp the air out of the PS system exactly as Andrew suggests below and see what happens.
If that doesn�t help then suspect a problem the pump � either the pump itself or the relief valve. If it�s the relief valve you should hear a squealing sound from inside the pump when it�s dead-headed - especially when the steering hits the stops. Otherwise the pump is tired and cannot make sufficient pressure.
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I wouldn�t bother changing out the ATF for hydraulic fluid - ATF should work fine. (As far as the Charlynn unit is concerned, ATF is simply hydraulic fluid with red coloring added...)
Also my experience with Charlynn PS on M�s (I have two of �em) is even when working properly the PS motor has difficulty turning the wheels when the tractor is stationary and the front wheels are on hard ground. This is particularly true if the tractor has a wide front end.
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