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Robbpend 
Bronze Level
Joined: 25 Aug 2014
Location: Florida
Points: 4
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 Topic: K Gleaner Hydraulics
Posted: 24 Jan 2015 at 11:30am |
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The combine has power steering, Hdy variable reel speed, and Hdy reel height control. The reel speed and height controls work fine when just starting the machine, but after about an hour of running the controls get slower and slower until they will not respond. The power steering, header height and variable speed still work. I can spray water on the Hdy pump and the reel speed and height will start working some, but very slow, and will eventually stop working again. Is this just worn pump or could it be something else? The Hdy filter and oil was changed, but the problem is still there.
thanks,
Robb
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SHAMELESS
Orange Level
Joined: 13 Sep 2009
Location: EAST NE
Points: 29486
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Posted: 24 Jan 2015 at 3:45pm |
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sounds like it's heating up. I don't have power steering on mine. might be sucking air or getting air pockets in it
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thunderbird
Silver Level
Joined: 31 May 2010
Location: Iowa
Points: 73
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Posted: 24 Jan 2015 at 4:43pm |
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Look for a clogged oil cooler. It may just need to be washed out. Are you using type A transmition oil?
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waltw
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Joined: 17 Sep 2009
Location: williston Fl
Points: 39
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Posted: 24 Jan 2015 at 5:21pm |
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Since header lift and traction drive variable speed works I might look at the control linkage. Something may be bent worn are lost .
There are two hydraulic circuits that dont work properly but there both activated by same lever in cab.
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AC7060IL
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Joined: 19 Aug 2012
Location: central IL
Points: 3533
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Posted: 25 Jan 2015 at 7:21am |
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My guess: Hydraulic pump and/or hydraulic flow control valve is(are) worn or internally cracked. When the combine is initially started, it's hyd oil is cold and thicker so the worn or cracked part('s) leakage is less noticeable. After the hyd oil heats up, leakage volume increases.
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tbran
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Joined: 14 Sep 2009
Location: Paris Tn
Points: 3526
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Posted: 26 Jan 2015 at 8:56am |
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common, replace the pump. Also remember - keep those header helper springs as pushed up tight as possible.
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