Gleaner K Hydraulic Problem
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=207077
Printed Date: 30 Jul 2025 at 5:24pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Gleaner K Hydraulic Problem
Posted By: evan austin
Subject: Gleaner K Hydraulic Problem
Date Posted: 13 Jun 2025 at 5:12pm
|
Hello All, My name is Evan, this is the first time I've posted on here. Anyway, I'm trying to help a friend diagnose a couple of hydraulic issues with his Gleaner K combine. I don't know the serial # but he said that it is one of the last K's before the K2's came out. The issues are possibly related: 1. The machine is very slow to lift and lower the head. He sent me a video of it and it was probably 25 seconds or more for the head to lower from all the way up to all the way down. If it was only slow going up, I would suspect the pump, but since it is slow both directions, I think it is a flow restriction somewhere. Is there an adjustment for flow control in the valve? He did disconnect the linkage and operated the spool at the valve and there was no change. I told him to check the lines too to make sure there wasn't a spot that was crushed or collapsing, but beyond that or a valve problem I'm not sure where else to look with that one. 2. After about 10 minutes of the engine running, not working the hydraulics just engine running, he said that the pump/reservoir/valve were so hot you couldn't hold your hand on them. My understanding, please correct me if I'm wrong, is that the system on these is "open centered" so there shouldn't be any significant pressure in the system until you move the handle to lift. It sounds like it is dead heading somewhere in the valve stack and making the pump work all the time.
My hydraulic knowledge isn't the greatest. He is a couple states away from me so I can't easily go look at it is person. He had texted me about it a couple days ago because I'm working on an E, so we were comparing systems over the phone. He said he was going to pull the whole valve stack off and have it checked out, he may have already done that. I appreciate any knowledge and insight I can get from people who know these machines far better than I do. Thank you again, Evan
|
Replies:
Posted By: DrAllis
Date Posted: 13 Jun 2025 at 5:23pm
|
The speed of drop is outside the cab window if it has Auto Header height control system. Overheating oil is usually ALWAYS caused by one of the spools stuck or the cab control linkage stuck going to the spools on the valve stack. You don't say which head is on the machine. I'd guess the reel lift or reel speed spool/linkage isn't in the center or "neutral" causing the oil to heat and this will ruin the hydraulic pump. Disconnect every spools pin and make sure each spool can operate in and out and return to center on it's own.
|
Posted By: evan austin
Date Posted: 13 Jun 2025 at 5:42pm
|
The grain header is on it currently, he's wanting to cut oats with it soon. It does not have auto header height. I think it does have hydraulic reel speed and height control. I'll tell him to check his linkages and make sure they aren't out of whack. Thank you for your help
|
Posted By: IBWD MIke
Date Posted: 14 Jun 2025 at 6:39am
|
Welcome aboard Evan!!! Good to see you here. Don't be afraid to chime in from time to time.
|
Posted By: evan austin
Date Posted: 14 Jun 2025 at 8:13am
|
Thank you, Mike! It's good to be seen!
|
Posted By: DSeries4
Date Posted: 14 Jun 2025 at 10:24am
First things first. Make sure there is enough hydraulic fluid in the reservoir and maybe put a new filter on it.
-------------
'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '61 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
|
Posted By: evan austin
Date Posted: 14 Jun 2025 at 7:00pm
|
I'm sure he checked the fluid level, I'll suggest a filter if he hasn't done it already. Thanks!
|
Posted By: DrAllis
Date Posted: 14 Jun 2025 at 7:35pm
|
Don't install the filter upside down !!!
|
Posted By: evan austin
Date Posted: 20 Jun 2025 at 7:41pm
|
Well, sort of an update on this project. My friend took the valve stack off and had a local hydraulic shop check it out. Aside from some questionable o-rings, they didn't find anything wrong with it. But, they did have a question about the pressure relief, because they didn't have a schematic of it, so he took the one off of his A2 to them so they could compare them. When he did that, he noticed that the A2 has 2 return hoses going from the valve stack to the reservoir, the K only had one. And the corresponding hole in the K reservoir had a very conspicuous looking plug in it. We've been studying the diagrams on Agco parts book, and I also think that somebody has been in that valve stack before and possibly put the valves back in the wrong order, if that's possible. The valve that is feeding the header lift I think is actually supposed to be for the reel speed, just in the wrong place in the stack, the hose going to the lift cylinders was in the port with the restrictor orifice in it, and the other port had a pipe plug in it. So that could explain the head moving up and down so slowly. He also said that the engine would bog down when you tried to lower the head, and the plugged port on the other side of the valve would explain that. The hose for the variable reel speed on the combine is gone, and the handle has been blocked from moving in the cab, and the linkage to the valve was removed. I didn't realize all that at first. It's fun trying to figure out what other people have messed with in the past! I think he's going to try to get it back together this weekend, so I'll keep you posted if I hear anything from him. Thanks again for the help Evan
|
Posted By: DrAllis
Date Posted: 20 Jun 2025 at 8:33pm
|
So, in the end, your buddy just bought this combine and has never used it ?? An Owners/Operators manual would show pictures of how the valves are properly stacked.
|
Posted By: AC7060IL
Date Posted: 21 Jun 2025 at 3:20am
Evan Austin, Here’s a link from a past AC forum post that may help you determine how all hydraulic lines were initially (factory) routed? In this previous post, you’ll find a color photo of gleaner hydraulic schematic from F/K combine service book that I posted back then in Jan 2024.
This old post’s topic says Gleaner A II variable speed, but it’s hydraulic content in general, applies to most older (1960s, 70s, 80s?) gleaner combine’s hydraulic valve stacks, pump, reservoir, etc.
if the valve stack is/or has been disassembled for resealing(new o-rings), individual valves could be eliminated, added, &/or rearranged in whatever order desired, with exception to the inner flow control valve & outer cap plate which are ALWAYS positioned at the ends so inside valves can be sandwiched together by mounting bolts. And obviously any new configured width of valve stack requires corresponding mounting bolts (3 - 1/4” diameter x correct lengths) to sandwich entire valve stack together & mount it to the pump/reservoir metal plate housing. The cab’s Hydraulic levers(linkages) to valves can easily be switched between valves too, if so desired?
And yes, each valve’s corresponding hydraulic hose(s) MUST BE correctly assembled/matched to that valve’s function(cylinder, VS), INCLUDING All return hoses to reservoir and hydraulic oil cooler positioned next to engine’s radiator, if equipped…..
https://www.allischalmers.com/forum/gleaner-a-ii-variable-speed-drive_topic199114_page1.html" rel="nofollow - https://www.allischalmers.com/forum/gleaner-a-ii-variable-speed-drive_topic199114_page1.html
|
Posted By: IBWD MIke
Date Posted: 21 Jun 2025 at 5:52am
|
Ahhhh, the previous owner.... Did some cussing of the P.O. yesterday myself. Should have had the camera rolling, could have won a comic relief award!
|
Posted By: evan austin
Date Posted: 21 Jun 2025 at 7:29pm
|
AC7060IL, thank you very much for sharing that diagram, that is very helpful! I forwarded that on and I saved that for future reference.
We don't know a lot of history of the combine, it was supposedly parked for several years until our friend Scott bought it, I think sometime in 2023. He got it running and shelled corn with it in 2023, but the hydraulics gave him a lot of trouble so he finished his harvest with a different combine. He was planning to get the hydraulics sorted out, but he was killed in a wreck in May 2024. The current owner bought it from Scott's son last winter. The rest of the machine is in really nice shape, we think that somebody was into the hydraulic system back before Scott got it, didn't get it back together right, and the machine got parked as a result. Hopefully we've got enough information about how it should be that he will be able to get it back together and functional again. Thanks again to everybody for all the help
|
Posted By: AC7060IL
Date Posted: 22 Jun 2025 at 7:26pm
Evan, you’re welcome. PM me about it, if needed.
In addition to correcting each valve’s proper hose(s)/functions, check the following areas for good measure.
- engine’s front double belt drive system (driven PTO shaft that power’s hydraulic pump & unloading auger) is in good repair(stretched/worn drive belt set-2 belts, worn idler pulley bearing.
- worn PTO shaft’s driver pulley & belt to power hyd pump. (Hydraulic drive belt should be very tight. Use a 18-24” prybar to tension/hold hydraulic assembly mounting plate when tightening 1/2”bolts using a 3/4”socket on a 1/2” rachet.
|
|