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4430 shifting\hydraulics

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Posted by sbr on August 23, 2005 at 20:07:51 from (199.120.118.80):

Working on an early model quad range 4430 John Deere. When hydraulic oil gets extremely hot(field work), the two speed won't shift from the high to low side. The only other function that is out of the ordinary is the disc will raise but will not lower. I checked the trans. pump flow and pressure and it was well within specs. If anybody has any other ideas I would be open for suggestions. Thanks in advance.

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