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Hydraulic help needed!!!
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AllisandGleaner View Drop Down
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Joined: 04 Mar 2016
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Points: 360 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AllisandGleaner Quote  Post ReplyReply Direct Link To This Post Topic: Hydraulic help needed!!!
    Posted: 12 Jun 2020 at 8:07pm
Got the little K gleaner out and started harvesting wheat today and after running it for a few minutes the reel won’t lift and the header got slow about raising got off to take a look And discovered the Hydraulics were hot and couldn’t hold your hand on the valves. Changed the filters and no help any pointers as to why the hydraulics are getting hot?
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 21995 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jun 2020 at 8:59pm
Reel speed lever is stuck in the forward position causing the hydraulic system to open the relief valve and get the oil HOT. Also, your hydraulic pump drive belt might be loose. What you call HOT might be normal 180 degree oil temp.
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MACK View Drop Down
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Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jun 2020 at 9:43pm
DR. Is right, have saw it happen a lot of times.       MACK
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AllisandGleaner View Drop Down
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Points: 360 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AllisandGleaner Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jun 2020 at 6:57pm
When you say the valve is stuck forward are you talking about the piston in the bottom that the lever works ore something internally in the body?
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DrAllis View Drop Down
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Points: 21995 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jun 2020 at 7:20pm
A model "K" Gleaner combine has a hydraulic valve stack that usually consists of four spools......header up/down......reel up/down.....reel speed fast/slow...….traction drive variable speed fast/slow.  One of those spools isn't centered and is activated. This is usually due to the linkage from the operators platform being rusty and sticking from sitting around for 10 months out of the year. If there wasn't a problem when put away for the last harvest, something is stuck now. Lots of WD-40 and move every lever in all directions many times to try and free things up.  You did check the belt/belts that drive the hydraulic pump, right ???
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AllisandGleaner View Drop Down
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Points: 360 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AllisandGleaner Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jun 2020 at 8:14pm
Yeah I checked the belts they was all nice and tight I got off the combine one time and looked at the valve slack and all the pistons were out in the same amount linkage is free the reel will raise fine whenever you first crank it up but after running it for 15 minutes or slow it might raise a couple inches that’s it I’m beginning to wonder if that second lift cylinder has an internal leak not letting oil transfer as it should since they appear to be in series and after it sits it transfers back is that possible?
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MACK View Drop Down
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Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jun 2020 at 10:26pm
Will header raise OK now? I have saw hydraulic coupler ware out at header.
.      MACK
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AllisandGleaner View Drop Down
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Points: 360 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AllisandGleaner Quote  Post ReplyReply Direct Link To This Post Posted: 14 Jun 2020 at 9:27am
The header will raise fast and smooth whenever you first start it gets a little slower as the oil get warmer
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DrAllis View Drop Down
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Points: 21995 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 14 Jun 2020 at 9:35am
So, if there are no spool valve centering issues, slower header raising with normal operating temperature hyd oil is the sign of a bad pump.
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