Better pull the screen again Quoting Removed, click Modern View to see Quoting Removed, click Modern View to see Thanks Thanks Funny, last month I purchased the check valves from Deere and A&I and DEERE was cheaper. I am not saying that is your problem, but a good thing to check pipe when putting back together. Should be shutting of at around 2300 PSI.
Viewing a thread - 4020 'synco hydraulic pump removal - AgTalk There is a difference between repair and restoration. I believe I slide pump and cradle forward and dropped cradle down first, reverse for installation. 4020 transmission pump - Yesterday's Tractors My hydraulics have been taking longer and longer to start working after the tractor has set a couple days anc yesterday the hydraulics never did pick Welcome! Why the first time, and why-again for the second time? This kit includes RE28790 Lip Seal. Are you 100% positive that frt pump shaft is turning with engine crankshaft? Thanks guys. If you do find the charge pump bad, it can be replaced with a higher volume version to supply extra oil to the front pump You might have a bunch of small internal leaks bleeding off charge pressure, not supplying adequate oil to the front pump.
4020 transmission pump - Yesterday's Tractors Sunny More Details. There could be a steering valve so worn its grabbing all the avialable flow. Verified that the pump is turning with the crankshaftRemoved rockshaft housing and inspected rockshaft bottom cover.Replaced the stroke control valve in the pump - which appeared to be new - no grooves or junk in the valve.I tested the output of the transmission pump, per the service manual and a 5 gallon bucket. "@type": "ImageObject", Much eaisier and safer from the top for me. Recommend removing the platform and top transmission cover to look at the gears to see if you can determine the problem before splitting. { Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. Deere has a bulletin that says what size to drill and tap the hyd line elbow to install it. 40/20vision Posted 12/22/2014 21:49 (#4258804 - in reply to #4258599) Thats what Im asking, The clutch is not depressed and the loader will barely raise thats what Im asking, Im running out of oil with the clutch engaged . Yes the key is built into the wedge.
Transmission & Rear Axles for John Deere 4020 Tractor You can change it without taking the pump off.
john deere 3020 tractor hydraulic pump - Tractor Talk Forum I replaced the pump because of age and because I had the front end all torn apart to replace the radiator, oil cooler and fuel tank - there was no previous failure. Tom You do not plug the pump. Yes I've utilized that test when performing hyd diagnostics but the results isn't as accurate as when utilizing a flow-rater when the oil GPM is measured under some pressure. } Thats what Im asking Quoting Removed, click Modern View to see NOT sure where you are going with this, with clutch depressed , synchro transmission pump isn't operating, so whether it's good or weak, it's immaterial. It performed just as the JD service manual said it should. with your comments and being this deep into it i believe i'll just replace it and move on. Both ways work fine. I thought I had a bad trans pump but I just needed to set the front pump pressure up a little higher. "@type": "Organization", . Source can be transmission pump, brake facing debris, etc. Mark P. I can't remember if pressure control valve sits far enough away from firewall to access the plug(parts key 1) for removal.
Hydraulic Pumps for John Deere 4020 Tractors | Up to 60% off Dealer I've never seen one stripped. 161858. I destroked the pump and readjusted the pressure to 2300 pounds. I replaced the pump because of age and because I had the front end all torn apart to replace the radiator, oil cooler and fuel tank - there was no previous failure. Enjoy banner ad-free browsing with Green Tractor Talk Plus. Please use the navigational links to explore our website. "@id": "https://www.yesterdaystractors.com/" Old fluid needs to be completely flushed-use clean new fluid, CCW rotation. Remotes, loader valve, steering motor, three point cylinder. The seat won't - it is lightly pressed in with o-rings holding it in place. You've been told the entire stroke-control housing has been repaired,twice. 114097. I thought YT old member was Gerald J but my Google & YT search came up with ZERO info. That check valve has been discussed several times on this forum. LJD the transmission on a synchro-range trans is lubricated by the trans pump. "author": { When it gets hammered, it "hammers." All you need to see is the spool that falls out. scmarkyp said: (quoted from post at 21:43:01 04/12/15) TX Jim - Where is the port to test under the hood? Source can be transmission pump, brake facing debris, etc. Sorry but "Oldtimers disease'' caused me to forget how your FEL is controlled. Turns out the pipe coming out of the transmission pump broke off. The 3020 will have to put up all the hay by Itself I didnt have time to get a gauge after work but I did raise the front wheels off the ground with the loader the one scv is holding the other one drifts pretty fast . Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Is this an early or late 4020? Tom I hope it isnt but Im afraid it might be . There could be a cracked piston in the main pump, there could be a cracked case in the main pump, though that should be leaking. John Deere 40T. }, In the I&T manual there is a flow test for the charge pump, but only for preside console tractors. There could be a bypassing leak in any of the valves, steering, rock shaft, brakes, diferential lock, remotes from a worn valve. Please use the navigational links to explore our website. Aug 18, 2014 From under the tractor look up at the pump, there is a screw type bolt extending out of the pump with a lock nut against the pump body. Thanks all.I will go back to the start this week on this.There has been many "cooks in the stew" here on this 4020.Will update again when I find somethind.Thanks again,Tom. TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. Gerald,the chatter on this one is present regardless of cluth in or out.Another post suggested the stroke control valve and seat.Cheap and easy enough.I;ll give it a try.Thanks,Tom.
John Deere Tractors Discussion Board - 4020 hydraulic pump leak revisited Without seeing it, or hearing it - who knows? Tx. ", Mark P. Won't hurt to pull the pressure control valve apart and see if it is working correctly. Remotes, loader valve, steering motor, three point cylinder. "headline":"4020 transmission pump",
Viewing a thread - JOHN DEERE 4020 HYDRAULICS - AgTalk "url": "https://www.yesterdaystractors.com/graphics/smllogo.png", I am slowly (but surely) restoring this tractor. "image": { Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. It has no brakes, steering, 3-point, SCV..nothing. 200445. Attachments RXP8028________UN01JAN94.gif No pressure needed for the front pump to work properly. It will all fall out. You don't need to remove the hood also with a transmission jack, splitting stand and about 45 minutes you can have it on the ground. View Details. That cap and adjuster pushes against a spring and the stroke-control valve spool. Rebuilt bottom end, had transmission overhauled, new hydraulic pump, new hydraulic circuit. Also, why is the standby pressure set so high? JD tech manual does not indicate you need to remove this. ", Gerald J.
PDF John Deere 4010 | 4020 | 6-302 | 6-341 | 6-380 | 6-404 Manual I am not saying that is your problem, but a good thing to check pipe when putting back together. Funny, last month I purchased the check valves from Deere and A&I and DEERE was cheaper. Tom, I hope it isnt but Im afraid it might be . functions. }, Ok with a 5000 psi gauge install/pressurize each breakaway coupler to see if each side will hold pressure after control lever has been returned to neutral position. What vintage 4020 is it? What DOES matter/shorten the time the hydraulics function with the clutch depressed is high pressure leaks to sump , meaning that a high pressure component is leaking oil that should be going back up front to the oil cooler to keep the main pump fed and instead is leaking off to the sump . functions. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. . Its up front in a T over the oil reservoir, next to the oil cooler. $2,600.00. Should be shutting of at around 2300 PSI. "@context":"https://schema.org", Dec 21, 2010 Messages 7 Tractor John Deere 4020 I was helping a friend do some work on a 4020 they bought, and in removal of a panel, we bumped the transmission disconnect lever (by the left heel as you sit), and no matter what we try, we cannot get it to reengage.anybody got any ideas? Best Answer Copy Real pain. Transmission Case Cover Gasket fits John Deere 4055 4430 4040S 4320 4040 4255 4050 4350 4020 4250 600 4230 4440 4240 4450 4000 4240S 4455 R33425 ASAP Item No. Just looked at a tractor yesterday - advertised with a newly fully rebuilt engine with a noise inside the engine. probably be back to bend your ear when i start on the high pressure "chatter" side of the system. Why the first time, and why-again for the second time? Jim do you have a number for this check valve where does it go ?
4020 transmission pump - John Deere Forum - Yesterday's Tractors Paris le-de-France destination - official website | VisitParisRegion "interactionType": "https://schema.org/CommentAction", I am also curious as to why the front pump was replaced. I tried de-stroking the pump with the manual de-stroke valve and still nothing. Find parts & diagrams for your John Deere equipment. Trying to figure out the size of the pipe so I can get a gauge and do the 5 gallon bucket test Ok. To get it out - you remove the cap at the bottom of the pump that has the lock-nut and adjuster (for pressure adjustment). There could be air leaks on a suction point. You might have a bunch of small internal leaks bleeding off charge pressure, not supplying adequate oil to the front pump. I was standing next to my running 4020 with a loader on it talking to a neighbor when it got very quiet. If any were lost, it will be too loose. Wind Gusts 8 mph. Plug thread size is .375 ORB. It says there will be damage if the same test is run on the later tractors. I started it back up and all seemed fine until I let up on the clutch then the tractor died. JD 4255/Kubota M7040 HDC. No trans pump and you will trash the top shaft and related parts! There could be a cracked piston in the main pump, there could be a cracked case in the main pump, though that should be leaking. Are you 100% positive that frt pump shaft is turning with engine crankshaft? None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. one new rear tire and rim. It will all fall out. May require aux fittings AT49331 and R27175 from OEM. I guess the next thing to do is get a gauge setup and test the transmission pump per the service manual and see what happens from there . Tom Ok. I can cycle the bucket cylinders 9 times then I run out of oil tractor about 1200 rpm clutch engaged . Or just the stroke control valve/seat. }, This is for a syncrorange transmission tractor. thanks so much, again, thanks tim.
JD4020 low hydraulic pressure | The Combine Forum Bought this 4020 syncro year ago in sad shape had to rework injection system, starter, and various other things just to get her running. Thanks all.I will go back to the start this week on this.There has been many cooks in the stew here on this 4020.Will update again when I find somethind.Thanks again,Tom Thanks all.I will go back to the start this week on this.There has been many cooks in the stew here on this 4020.Will update again when I find somethind.Thanks again,Tom More info here.I talked to the tractor owner.He said the entire stroke control valve has been replaced ,twice.Also the trans pump has been rebuilt ..now what?A pump? You Save: $96.08. If ind has valve been checked to be sure it's setup for closed center OR hasn't blown an internal seal allowing valve to revert to open center which is a CC hyd system pressure/flow thief. How to replace hydraulic pump on John Deere 3020 2. Tx. Used to cost around $25 for a new spool and seat - but now? what do i look for to determine if it has excessive wear ? That was in specs so next we added a 300# pressure guage to the fitting on top the hyd pump and came up with a little less than 50# of pressure. Use of this Web site constitutes acceptance of our. Trying to figure out the size of the pipe so I can get a gauge and do the 5 gallon bucket test, Don't be real quick to assume the trans pump is bad. Start tractor and do not work any hyd. To get it out - you remove the cap at the bottom of the pump that has the lock-nut and adjuster (for pressure adjustment). This sort of problem can be a mess - since there will be bits of debris throughout the hydraulic system. When you remove the pump support to block bolts take the bottom two out first. If it was my repair job - and I felt confident the noise was coming from the pump area - I'd first pull the stroke-control valve spool and eyeball it.
4020 transmission pump - Yesterday's Tractors The hydraulics are so different between the side console and the preside console that trouble shooting one for the other won't work well. I checked my service bulletins and service bulletin index and found some information on the later 4020 and there is a check valve in them too. Technical Manual John Deere 4000, 4020 Tractors.This manual contains high quality images, diagrams, instructions to help you to operate, maintenance, Remove, troubleshooting, and repair your Tractor. Come join the discussion about towing, PTOs, reviews, attachments, modifications, troubleshooting, maintenance, and more! This is for a syncrorange transmission tractor. Overview. It says there will be damage if the same test is run on the later tractors. Thanks for the reply guys. I did take the stroke control valve out of the pump and verify that it was clean - there did not appear to be any visual issues with it.
1967 JD 4020 powershift transmission sudden failure John Deere 4020 Hydraulic & Power Steering Components Parts Diagram Please use the navigational links to explore our website. "logo": { Usually, when it leaks it also causes hard hot cranking and starting. Posted 12/1/2022 16:29 (#9960144 - in reply to #9960118) Subject: RE: John Deere 4020 / Transmission Hydraulic Pump: scmn: Remove the two 1/2 bolts that hold the couplers to the rockshaft leaving the lines connected. View Details. So just plumb a gauge with a John Deere hydraulic tip on it and plug into the breakaway coupler, Jim Im running it off the couplers off the back of the tractor I have the stuff that you helped me with earlier and I have the valve converted for closed center but I have not hooked any of it up so it still works off the couplers, Shouldnt run out of oil with the clutch engaged pedal out should I ? There is not much to fix in there - a few adjustments, a few seals/o-rings, one little filter to clean and/or change, and replacement of the actual stroke control valve and seat. That cap and adjuster pushes against a spring and the stroke-control valve spool. John Deere 4020 is one of John Deere's best-selling tractors with over 180,000 units produced and sold in the United States. That would indicate to me that something was done wrong - and makes any of the repair work suspect. - just about anything that gets past the transmission-pump screen in the bottom of the trans. I've updated my web page with what information I have, at least the service bulletins I have index or bulletin. Thanks for the reply guys. "userInteractionCount": 39 So just plumb a gauge with a John Deere hydraulic tip on it and plug into the breakaway coupler Quoting Removed, click Modern View to see What type valve controls loader(scv or ind)? Turns out the pipe coming out of the transmission pump broke off. 2800 PSI is way high. "@type":"DiscussionForumPosting", What gpm is being pushed to the front pump? And the loader wont raise at all even after a five minute idle if I give it about ten minutes it will raise one time with the clutch engaged Pulled the screen clean as a whistle pulled the filter clean as a whistle . Have you tried checking stand-by pressure in front of pressure control valve that's under the hood?? Why? My point is - any previous claim of repair work can be suspect - unless you know and trust the people involved. If you all have anymore suggestions, I'd be very interested to hear about them. . Compare at: $362.96. The check valve goes in the elbow by the trans filter that connects to the line that goes to the front pump. "width": 200, Pump hammers, off and on, but gets generally noisier over time. IIRC there was an old YT member that discussed the installation but I can't remember his handle. It's not much different than a valve out of an engine cylinder head. Gerald J. I checked my service bulletins and service bulletin index and found some information on the later 4020 and there is a check valve in them too. It performed just as the JD service manual said it should. I would not assume it was done correctly - but hey, maybe it was. Transmission Input Shaft fits John Deere 4020 4320 4000 4010 600 R34201 ASAP Item No. If trans pump is pumping oil to frt pump and stroke control valve is functioning properly then there should be some stand-by pressure.
John Deere main hydraulic pump disassemble and inspection. 2800 PSI is way high. "mainEntityOfPage": { 1. thanks !! My point is - any previous claim of repair work can be suspect - unless you know and trust the people involved. The tracor still ran fine and pto worked but as soon as I let up on the clutch it would kill motor. The clutch is not depressed and the loader will barely raise thats what Im asking The clutch is not depressed and the loader will barely raise thats what Im asking Im running out of oil with the clutch engaged . In addition, if you suspect the pump, you ought to be able to hear the noise coming from that area. It's not much different than a valve out of an engine cylinder head. It does have a manual destroke screw on it - and I have tried turning it down and it has not helped. Start tractor and do not work any hyd. } Tom, Plug the line to the main pump to do the test according to the manual, So if I let it idle for about ten minutes I can cycle the loader clear up and down once before its starts getting jumpy and quits going up, Mine would steer fine but did not want to raise the discbine completly and would not begin to run a hyd motor. Have a John Deere 4020 with syncro range, transmission , when you hold clutch pedal in to shift gears you lose power steering, when you let clutch pedal out you get power steering back , what would cause this, where is it losing the pressure at. THE QUAD RING WITH BACKUP WASHER RATHER THAN THE TEFLON SEALING WASHER. Tractor tends to get hard to start, espcecially when hot - unless a pump-detroker is installed. "name": "Yesterday's Tractor Co.", How much and what do I gain buy plumbing the loader into the rockshaft line will that help at all with this deal Pulled the screen clean as a whistle pulled the filter clean as a whistle . If there is anything wrong with it - you will see it - because the valve-seating area will be clean and smooth - or it will be hammered with dents in it. Any info on what could have happened or how to fix this would be appreciated. John Deere and its logos are the registered trademarks of the John Deere Corporation. It's a ten minute job. Why? Show more Show more View Details. I installed a manual de-stroke valve for the stroke control valve on the hyd pump. If the hyd pump shaft is turning when the engine crankshaft turns then I'd guess the hyd pump has a faulty stroke control valve. "name": "Svcummins" I think a new trans pump would improve your tractors hyd operation very insignificantly if any at all. This sort of problem can be a mess - since there will be bits of debris throughout the hydraulic system. New generation hydraulic check valves Gerald,the chatter on this one is present regardless of cluth in or out.Another post suggested the stroke control valve and seat.Cheap and easy enough.I;ll give it a try.Thanks,Tom Gerald,the chatter on this one is present regardless of cluth in or out.Another post suggested the stroke control valve and seat.Cheap and easy enough.I;ll give it a try.Thanks,Tom",
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