The fix for this symptom (because many people have had this issue as a 4640 is a capable machine but posses inefficient gpm to run a modern planter) is to use the pump c or a 4640 or 4840 with hyd FWA. Transaxle . If I cannot use the hydraulic drive, it is not the end of the world. If I want to use the full hydraulic capabilities of this planter, would I simply be best off purchasing a pto driven hydraulic power unit to operate these devices and leave the rest of them on the tractor's hydraulic system? We are pulling a Deere air drill with a 4960 and last year were struggling with enough air pressure to move a larger bean seed, I went with a power beyond block and straight JIC fittings ( deleting the couplers) and gained enough extra flow to make it work. HYDRAULIC FRONT WHEEL ASSIST, 18.4-38 10 bolt duals, 11.2x24 fronts, Quad Range transmission, 3 point hitch, QH, big 1000 pto, ag drawbar, 2 remotes, diff lock, front weights, 5160 hours QUICK AND EASY ONSITE LOW FIXED RATE FINANCING AVAILABLE, TRUCKING AVAILABLE ANYWHERE. This blog is to help those with questions on how to fix things on their John Deere equipment whether it is Ag Equip or Construction as well as other brands of equipment. Currently NOT using the hydraulic drive for the population, so nothing has been altered. The tractor has a front end loader and the loader will lift slowly also. As TimS stated. I am basing that on what was written in the narrative of the work done on the tractor. I've got a wonderful Wife, a cute as a button Daughter, and a little boy. Around this area those that tried the variable rate drives were disappointed and went away from them, it's an intriguing idea that can give a lot of grief. RPM X Pump Displacement / 231 How much oil will be produced by a 3 cubic inch pump operating at 2600 rpm? Save up to 60% off dealer pricing on parts for John Deere 4640 Tractors. The 4640 was equipped with either the stock 50 cm3 pump rated at 30gpm at redline or the optional 65 cm3 pump rated for 40gpm at redline. The screen was almost stopped up but clean now, still does same thing when hot after it cools down it starts moving again could it be in main pump or trans pump has anybody ran into this problem … As noted prior, nothing has been altered yet. WITHOUT THE AUTHORIZATION OF JOHN DEERE OR IT'S SUCCESSORS. Deere piston pumps are variable displacement so 3 cubic inch is the MAX rating. Why not add a PTO pump for some of the functions and take the load off your main pump? Immediately behind the main hydraulic pump outlet, or through an scv? Good old basic finger pick up and ground driven units, are cheaper and more dependable. I have a problem on a John Deere 4640 tractor's steering.After struggling for a month now.. Does anyone have any ideas about what the problem could be? Mike I have looked into one of those pto driven hydraulic power units. See your John Deere Dealer. What that will tell you is whether something is wore out or if something broke. "mainEntityOfPage": { I would not want to go back to a finger pickup, as good as they were in their day. If they missed the filter, no wonder low flow. John Deere 4640 Tractor Race, Bearing; with Rollers. John Deere Tractor Parts 4640 - Hydraulics. Neither had the SCV's upgraded to ISO couplers. When I talked about this to the representative at Worthington Ag Parts, we discussed the possibility of going to the larger main pump. This has been the one key disappointment with this tractor versus the 4630 we had. Machine Creeps Forward … Our engineers have taken the time to design a superior hydraulic cylinder versus the original equipment, hydraulic cylinders on your John Deere Equipment. I have been looking at this from the standpoint that if my main hydraulic pump is weak and needs replacement, I might be able to solve this problem with a larger main pump. Currently NOT using the hydraulic drive for the population, so nothing has been altered. I checked into the option when I got my vacuum planter. Currently NOT using the hydraulic drive for the population, so nothing has been altered. Around this area those that tried the variable rate drives were disappointed and went away from them, it's an intriguing idea that can give a lot of grief. ... 4020 Steering Problem 4640 Tractor Page 2 John Deere 4020 T 33 Turbo Kits M W Rajay Garrett 1970 John Deere 4020 Fwd Powershift S95 Davenport 2017 John Deere 24v To 12v Starter Conversion Kit Reading his comment tends to shy me away from one of those units. Where and what is the connection from the tractor to supply the planter? ... John Deere 4640. As TimS stated. From day one, lifting the planter and raising the hydraulic markers were noticeably slower on the current tractor. If the oil viscosity is not correct, the oil and oil filter may need to be replaced. I have not seen anyone who has utilized one of these pto driven hydraulic power units nor do I have any feedback, positive or negative, other than what Tim S has mentioned. My second question is if these figures are relatively close to where it should be, I have seen some reference to possibly a larger main hydraulic pump that could be installed in that tractor. This has been the one key disappointment with this tractor versus the 4630 we had. The pump does not have to be a dedicated planter pump. First was the problem a gradual failure or an instantaneous failure. "@id": "https://www.yesterdaystractors.com/" Operator Station Repair . Two subscriptions will be available with the 4640 Universal Display + AutoTrac Activation: 4640 Premium 3.0 1-year subscription. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. See your John Deere Dealer. You are checking to see if your Lube/Charge pump is putting anything out. In a closing thought. Have been told it is a failed spline, (keyway) to a hydraulic feed pump in the back end. Worn hydraulic pump. Good old basic finger pick up and ground driven units, are cheaper and more dependable. "@type": "ImageObject", HYDRAULIC PRESSURE REAR OIL PIPE AND PRESSURE CONTROL VALVE [04C10] - TRACTOR John Deere 4640 - TRACTOR - 4640 and 4840 Tractors 70 HYDRAULICS HYDRAULIC PRESSURE REAR OIL PIPE AND PRESSURE CONTROL VALVE [04C10] | 777parts. John Deere 4640 tractor parts Tractor parts for John Deere 4640 tractors at All States Ag Parts. The fix for this symptom (because many people have had this issue as a 4640 is a capable machine but posses inefficient gpm to run a modern planter) is to use the pump c or a 4640 or 4840 with hyd FWA. Deere 4020 hydraulic issue. Hydraulic oil suction filter … Hy-Capacity was founded in 1978 as a remanufacturer of agricultural clutches, water pumps and torque amplifiers ().Over the years, Hy-Capacity has expanded product lines to include ag parts such as tractor seats and cab kits, hydraulic pumps, air conditioning items, front end / front axle parts, filters, LED lights and more. The front pump will pump more oil than the charge pump can get to it. As noted prior, nothing has been altered yet. Internal leakage in control valve or cylinder. I am basing that on what was written in the narrative of the work done on the tractor. Pump damaged. "url": "https://www.yesterdaystractors.com/graphics/smllogo.png", Where and how is it ported back into the tractor? I spend 50% of my time working on construction equipment too. It seems that most modern equipment is requiring a much larger Hydraulic flow, and of course wider equipment has more cylinders to fill each time they are lifted then toss in a couple hydraulic motors to spin air systems and there you are needing a new tractor,,,sounds sorta like a marketing plan for the dealers...along with the new guidance systems luring customers in. Hoses would add more, obviously. The front pump will pump more oil than the charge pump can get to it. Over time you may want to troubleshoot your John Deereto keep it performing at its peak. Mike. John Deere Tractor Parts 4640 - Hydraulics. I have quite a bit to think about. Deere piston pumps are variable displacement so 3 cubic inch is the MAX rating. John Deere 4640 tractor overview. "interactionType": "http://schema.org/CommentAction", Pros and cons to this? Engine If Check Engine Will Not Crank PowrReverser: Transmission gear shift lever not in neutral position. The prior owner of the planter did variable rates with precision farming technologies. Deere makes three USA designed closed-center pumps. ... 4020 Steering Problem 4640 Tractor … "@type": "ImageObject", nice video about hydrostatic front-wheel drive installed on 2130 and 3130 John Deere tractors in 1976 I responded in a prior message, B & D, and I pasted your message in that response so I could address your points and questions directly in the text. John Deere 4640 tractor specification John Deere 4640 tractor specs, dimensions, fuel consumption, transmission, drive, equipment It is going into the shop here relatively soon for some repair work and I am trying to do some homework before it goes in, so that we may be able to resolve this. Your Site Artical is to good and help fullhttp://www.bishenterprise.comFor over 40 Years, Bish Enterprises has been providing innovative agricultural products, serving farmers and dealers that serve farmers, harvest the crops that help feed America. I seem to recall seeing something about rated hydraulic flow on a 4640 being around 20 gpm, but I do not recall any more information on that. Add to Cart. The fertilizer pump is operated off one of the SCV's with the flow throttled down fairly low on the SCV itself. Some John Deere 4640 Tractors have a 4x2 2WD chassis, but there are also some with a 4x4 HFWD 4WD*Optional chassis, all equipped with hydrostatic power steering. The hole job including the making the special tools to lift the cover will take you between 20 and 25 hours to complete. There are two oil filters and a screen, their condition? Is this the front hydraulic pump? There is no down side other than the cost as it is a direct bolt on swap but you will notice a pretty large difference in response time. ... John Deere 4640, quad range, 1000 pto, 3pt and quick hitch, 18.42 rears, matching 10 … I have been looking at this from the standpoint that if my main hydraulic pump is weak and needs replacement, I might be able to solve this problem with a larger main pump. 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. I am just trying to make the best informed decision I can on this. Mike I would think you could get a direct drive PTO pump from someplace such as Surplus Center for a lot less than the price you quoted. Is that something that could be done? 2.4, 3, and 4 cubic inches per revolution. Second, plumb a gauge into the filter relief valve housing. }. John Deere Rate Controller 2000 . I have the flow set to the point where I can run up to 10 gallons of 10-34-0 per acre, but only run 5 to 7. "dateModified": "2014-11-18", Years Made: 1978-1982. According to the 4640 parts catalog the larger cap hyd pump was only offered from factory on a HFWD model. Its close but somwhat low. They both were used on a prior planter, a 7100 John Deere. All of the FARMTUFF® Replacement Parts are made to meet OEM specifications and requirements. I have been looking at this from the standpoint that if my main hydraulic pump is weak and needs replacement, I might be able to solve this problem with a larger main pump. Low relief valve pressure. Low oil flow from pump - plugged inlet line or worn pump. There is no down side other than the cost as it is a direct bolt on swap but you will notice a pretty large difference in response time. By jasg in forum john deere ag tractors replies. Is this the filter or screen you are referring to, Tx Jim? What I can say, is this 4640 replaced a 4630. Using Troubleshooting Chart If you are experiencing a problem that is not listed in this chart, see your John Deere distributor for service. RPM = 2600 Pump Displacement = 3 cubic inches per rev RPM X Pump Displacement / 231 = 33.7 gpm 2002sliverado You're correct in that a QR trans has one hyd filter plus could have a small filter in the hyd pump depending on tractor serial number. Up for absolute action is a John Deere 4640 with loader. Where and how is it ported back into the tractor? If you notice that there are issues with the tractor hydraulics, there are several key areas you can troubleshoot to get the tractor running efficiently and effectively again. If I am reading Tim's response correctly, it would probably be wise to install a Power Beyond Block and reduce any restrictions with JIC couplers? My question has 2 parts. Add to Cart. If I cannot use the hydraulic drive, it is not the end of the world. This pump is 26 gpm. We are pulling a Deere air drill with a 4960 and last year were struggling with enough air pressure to move a larger bean seed, I went with a power beyond block and straight JIC fittings ( deleting the couplers) and gained enough extra flow to make it work. }, The 4640 was equipped with either the stock 50 cm3 pump rated at 30gpm at redline or the optional 65 cm3 pump rated for 40gpm at redline. High Tech Industries. I have the flow set to the point where I can run up to 10 gallons of 10-34-0 per acre, but only run 5 to 7. 2002sliverado You're correct in that a QR trans has one hyd filter plus could have a small filter in the hyd pump depending on tractor serial number. There is not a place to mount this pto driven unit. John Deere AutoTrac™ and documentation are included in the purchase of the display. I will add, this 4640 had been used on a 7100 planter for a few years, as well as a 4630 that was replaced by this 4640. ", Neither had the SCV's upgraded to ISO couplers. If the flow was measured through an scv, not all the scv's may flow the same amount of oil regardless of where the rabbit/turtle is. ... Cap Screw, New, John Deere, 19H1904 ASAP Item No. Your couplers and hose tips can also restrict flow. "@type":"DiscussionForumPosting", In a closing thought. "description":"Discussion of 4640 Main Hydraulic Pump in the John Deere Tractors forum followed by comments. When the oil returns from the planter. If you were using it for anything else but planting you wouldn't notice. I would think you could get a direct drive PTO pump from someplace such as Surplus Center for a lot less than the price you quoted. I started adding fluid and checking after 2 gallons and then after every gallon until I had added 5 gallons . Regulator of some newer equipment machine Creeps Forward … John Deere 4640 Horsepower the John Ag... In case the system pump is the MAX rating has been the one key with... 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