Returning the oil direct to sump will bog a Dubuque , Mannheim or Waterloo closed center system . John Deere 4640 John Deere 4840; Drive system: 4x2, 2WD (depending by model) 4x2, 2WD (depending by model) Additional: one wheel drive: one wheel drive: Permanent 4-wheel drive: n.d. n.d. If they missed the filter, no wonder low flow. Second, plumb a gauge into the filter relief valve housing. 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. I purchased a John Deere 4640 and am having a hydralics problem. Hydraulic Pump w/ New Piston Housing - Reman R94658NH. I was told there was some sort of screen in the 3 cubic inch pump, and that if I went to the 4 cubic inch pump, this would no longer be the case. There is a wee screen up at the front pump I'll bet the dealership missed. Look for oil flying around there , on the bottom of the rockshaft there's a cover that can blow the gasket thus dumping return oil into the sump, causing low oil flow . Consult your John Deere dealer for this problem. Replacement John Deere Brand Hydraulic Cylinders and Parts Hydraulic Cylinders Inc. has an extensive inventory of premium aftermarket hydraulic cylinders for many John Deere models. Years Made: 1978-1982. Low relief valve pressure. John Deere 4640 Hydraulic System Parts | Hydraulic Pumps … On my breaks from school I worked at the John Deere Dealership. It just has to have enough flow and a flow regulator of some kind on it. John Deere Rate Controller 2000 . 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. Pump damaged. At this point I can raise the loader and lower loader to ground the hydraulics will operate as normal, but it only last a few moments and I have to do the same thing to operate the disk cylinder. When they flow-rated the pump, where did they do it at? John Deere 4640 tractor specification John Deere 4640 tractor specs, dimensions, fuel consumption, transmission, drive, equipment I have a 1979 or 1980 2140 John Deere tractor that has a hydraulic problem. Have been told it is a failed spline, (keyway) to a hydraulic feed pump in the back end. }. ... 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 The prior owner of the planter did variable rates with precision farming technologies. Standby pressure was at 2000 psi and was turned up to 2300 psi. "interactionStatistic": { It just has to have enough flow and a flow regulator of some kind on it. The vacuum plants varying seed sizes much more accurately. They both were used on a prior planter, a 7100 John Deere. You could a have just a wore out pump. I have a problem on a John Deere 4640 tractor's steering.After struggling for a month now.. 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. Visit TractorJoe today! Manufactured by: JOHN DEERE. This has been the one key disappointment with this tractor versus the 4630 we had. The relief valve could also be damaged. The pump does not have to be a dedicated planter pump. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. "@type": "InteractionCounter", If this was a JD planter, attaching it to the hitch frame would seem to be a piece of cake. Both pumps are single bank 2000 series units. I decided to call in some help. Situation or Problem. Second, plumb a gauge into the filter relief valve housing. 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 3 inch pumps that I run on test here normally only get 14-15 GPM, and this is set for Ideal performance,no leaky valves in the mix. If the flow was measured between the pump and junction block, you may be losing flow through the steering, brakes, or rockshaft. Used on John Deere 4240, 4440, 4640 (Part No: AR96767) $471.38: Radiator - For model 4640. }, Look for oil flying around there , on the bottom of the rockshaft there's a cover that can blow the gasket thus dumping return oil into the sump, causing low oil flow . "@type": "WebPage", Immediately behind the main hydraulic pump outlet, or through an scv? I am just trying to make the best informed decision I can on this. When the oil returns from the planter. I've got a wonderful Wife, a cute as a button Daughter, and a little boy. Transaxle . Good old basic finger pick up and ground driven units, are cheaper and more dependable. "description":"Discussion of 4640 Main Hydraulic Pump in the John Deere Tractors forum followed by comments. I will also be replacing all fluids and filters before spring, and the pickup screen WILL be looked at and cleaned. John Deere 4640, 4840 Tractors Technical Manual (TM1183) John Deere 60 Skid Steer Loader Technical Manual (TM1185) John Deere 670A and 672A Motor Grader Repair Technical Manual (TM1188) ... John Deere 250GR Hydraulic Excavator (HYEX) Field Maintenance Technical Manual (TM12141) 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. ... John Deere 4640. Mike Why not add a PTO pump for some of the functions and take the load off your main pump? 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. Is this the filter or screen you are referring to, Tx Jim? All of our new, rebuilt, and used parts come with a 1 year warranty. 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? I am basing that on what was written in the narrative of the work done on the tractor. 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. 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 JD 4640 is equipped with a 7.6 L six-cylinder diesel engine and one of two transmissions: partial power shift transmission with 16 forward and 6 reverse gears or full power shift transmission with 8 forward and 4 reverse. Where and what is the connection from the tractor to supply the planter? The vacuum plants varying seed sizes much more accurately. Don't have the tractor sitting in a convenient location, and I cannot recall for sure, but with its Quad Range, isn't it just one filter? Look for oil flying around there , on the bottom of the rockshaft there's a cover that can blow the gasket thus dumping return oil into the sump, causing low oil flow . Complete Technical Manual with electrical wiring diagrams for John Deere 4640 and 4840 Tractors. Español; Français; Deutsch; got a question? 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 am not sure exactly where they checked the system, but from what I can figure out, it would seem the readings probably came from one of the SCV's. Immediately behind the main hydraulic pump outlet, or through an scv? If pressure is going to the main hydraulic pump but nothing is coming out remove your system pressure relief valve and inspect it for sticking or wear. nice video about hydrostatic front-wheel drive installed on 2130 and 3130 John Deere tractors in 1976 According to the cost I saw in the Worthington Ag Parts catalog, I seem to recall seeing the standard pump running around $800 and the 4 cubic inch pump running around $1000. I was told there was some sort of screen in the 3 cubic inch pump, and that if I went to the 4 cubic inch pump, this would no longer be the case. Where and what is the connection from the tractor to supply the planter? Screenshots for John Deere 4640 & 4840 Tractors Technical Manual TM1183 PDF: enlarge Our company provides for sale original spare part catalogs, workshop manuals, diagnostic software for all models of engines, cars, trucks, buses, forklifts, tractors, harvesters, cranes, buldozers, generators, construction and agricultural machines, motorcycles. 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. Hydraulic oil suction filter … "height": 57 2.4, 3, and 4 cubic inches per revolution. I think it could be done, reservoir and all, for $1000 or less. Mike One thing not mentioned is that under continuous hydraulic function use the transmission/charge pump is the limiting factor. "url": "https://www.yesterdaystractors.com/graphics/smllogo.png", 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. You are checking to see if your Lube/Charge pump is putting anything out. Hydraulic Multiplier Accessories John Deere “Old Style” Male Coupler Tip Set for Summit Hydraulic Multipliers. 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. but it will cost about $1600 or so for the pump the the add on hydraulic pump won't work out well. Worn hydraulic pump. They both were used on a prior planter, a 7100 John Deere. Remove the rear plug on the back of the tranycase case. 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? Remove the rear plug on the back of the tranycase case. 'Our inventory of JD 4640 tractor parts is always changing. My question has 2 parts. Yes and if you can return oil threw the charge circuit it will help..When I was using a power beyond block for the air pump I was dumping back to sump, but what I needed in my application was a better flow to the air pump.. There is a wee screen up at the front pump I'll bet the dealership missed. Mike Tim, experience with both a finger pickup planter and a vacuum planter, along with testing several of both kinds on my planter test stand convinces me the vacuum is the better choice these days. There are some very simple items to check to verify the problem. John Deere 4640 Row-Crop tractor featured with 4×2 2WD or 4×4 HFWD 4WD, hydrostatic power steering, differential hydraulic wet disc brakes, 16-speed partial power shift or 8-speed full power shift transmission and 7328 lbs (3323 kg) Rear lift. RPM = 2600Pump Displacement = 3 cubic inches per revRPM X Pump Displacement / 231 = 33.7 gpm. ", Where and how is it ported back into the tractor? Remove the rear plug on the back of the tranycase case. The hole job including the making the special tools to lift the cover will take you between 20 and 25 hours to complete. John Deere 4640 and 4840 Tractors Technical Manual (TM1183) TM1183 – John Deere 4640 and 4840 Tractors Technical Manual.pdf 1,151 pages, bookmarked, Searchable, Printable, high quality PDF. Currently NOT using the hydraulic drive for the population, so nothing has been altered. I changed the filter and it inproved slightly but is still very slow. It just has to have enough flow and a flow regulator of some kind on it. I am struggling with this issue because I tend to believe the main hydraulic pump is not putting out what it should. Is this the filter or screen you are referring to, Tx Jim? In a closing thought. Immediately behind the main hydraulic pump outlet, or through an scv? The price I was quoted came in at just under $6000. ... Front Hydraulic Pump Drive Clamp Half - This Coupler Half measures 5.142 inches overall length, 2 inches wide and has 3/8-16 NC threaded hole. Both pumps are single bank 2000 series units. ISO couplers and tips will flow more oil the John Deere ones. Returning the oil direct to sump will bog a Dubuque , Mannheim or Waterloo closed center system . The front pump will pump more oil than the charge pump can get to it. Changed filters on every tractor last spring and my recollection on doing that is not the greatest at this point in time. 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. See your John Deere Dealer. "userInteractionCount": 22 "@context":"http://schema.org", As you check the oil, make sure that the reservoir air vent cap is plugged. If you were using it for anything else but planting you wouldn't notice. ISO couplers and tips will flow more oil the John Deere ones. It raises and lowers the planter and hydraulic markers slower than what I would expect it to do, even when I am not using the liquid starter when planting soybeans. Your couplers and hose tips can also restrict flow. The John Deere 4640 has a … Sounds like some debris went through the system. The 3 inch pumps that I run on test here normally only get 14-15 GPM, and this is set for Ideal performance,no leaky valves in the mix. John Deere Tractor Parts 4840 - Hydraulics. We went with ground driven finger pick up units on the last couple Deere planters, feeling the consistency of that system made a better stand, this can be argued in both directions but it's what works good for us One thing not mentioned is that under continuous hydraulic function use the transmission/charge pump is the limiting factor. Odds are it would be cheaper as well. Is that something that could be done? I have looked into one of those pto driven hydraulic power units. I looked at this variable rate drive as a step towards some of the precision farming practices and that I could get a comfort level with the variable rate population before taking a step further with precision. I think it could be done, reservoir and all, for $1000 or less. For problems with the boom arms not rising or lowering correctly, it could mean that the gear pump is damaged. We accept Paypal and All Credit Cards. John Deere 4640, 4840 Tractors Technical Manual (TM1183) John Deere 60 Skid Steer Loader Technical Manual (TM1185) John Deere 670A and 672A Motor Grader Repair Technical Manual (TM1188) ... John Deere 250GR Hydraulic Excavator (HYEX) Field Maintenance Technical Manual (TM12141) John Deere 315SK Backhoe Loader Diagnostic Operation and Test Technical Manual (TM12471) 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. What that will tell you is whether something is wore out or if something broke. "@type": "Organization", Mechanical: Chassis: 4x2 2WD : 4x4 HFWD 4WD: Differential lock: pedal-actuated hydraulic 4640/4840 No Hydraulics, No Steering, No Brakes. Its close but somwhat low. Re: 4640 Main Hydraulic Pump in reply to 2002sliverado, 11-19-2014 05:26:36. I would not want to go back to a finger pickup, as good as they were in their day. High Tech Industries. Replaces OEM Part Numbers; Allis Chalmers: 70239804 John Deere. That pump does not seem to take a lot of hydraulic oil flow to operate it. ", }, What I can say, is this 4640 replaced a 4630. … When you have checked all the possible causes listed and you are still experiencing the problem, see your John Deere distributor. $237.00. Hi. Excessive load on hitch. Reading his comment tends to shy me away from one of those units. Machine Creeps Forward … John Deere Rate Controller 2000 . Reading his comment tends to shy me away from one of those units. Deere piston pumps are variable displacement so 3 cubic inch is the MAX rating. Good old basic finger pick up and ground driven units, are cheaper and more dependable. JOHN DEERE 4640 Horsepower RPM X Pump Displacement / 231 How much oil will be produced by a 3 cubic inch pump operating at 2600 rpm? There are two oil filters and a screen, their condition? It is also worth noting that the independent rear PTO runs at 1000 (1.75) rpms. Skip to Content. 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. Deere makes three USA designed closed-center pumps. This one has been a head scratcher trying to isolate problem in load sense circuit on priority 3 block for hitch and remotes . There is not a place to mount this pto driven unit. The John Deere 4640 is a 2WD/4WD row-crop tractor from the Iron Horses series. As TimS stated. It is important to note that John Deere Rate Controller 2000 can control up to five operations and may be used for liquid or dry application. "interactionType": "http://schema.org/CommentAction", John Deere 4640 Tractor Race, Bearing; with Rollers. Yes and if you can return oil threw the charge circuit it will help..When I was using a power beyond block for the air pump I was dumping back to sump, but what I needed in my application was a better flow to the air pump.. ’ s speed has a front end loader and the pickup john deere 4640 hydraulic problems will be looked at and cleaned is... Deere ones the 4600 CommandCenter and 4640 Universal Display + AutoTrac Activation: 4640 & 4840 Chassis only Volume of... Option when i talked about this to the larger main pump, 4440, 4640 ( Part No: )... You see pressure move on to checking pressure at your main pump why not add pto! 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Meter directly onto the output of the SCV itself which prevents oil flow fittings and ensure the return is... Will be produced by a 3 cubic inch is the MAX rating a difference well! Fix, i was number one in my case the pump does not have to be dedicated. You were using it for anything else but planting you would n't notice FARMTUFF® parts. I tend to believe the main hydraulic pump is new: AR96767 ) $ 471.38 Radiator... Units, are cheaper and more dependable $ 99.95 $ 64.90-John Deere Replacement couplers Deere... Spline, ( keyway ) to a hydraulic problem priority 3 block for hitch and.. The time to design a superior hydraulic cylinder versus the 4630 we.! Agco Corporation, please call toll-free 877-530-4430 go back to a finger pickup, as good they... Planter did variable rates with precision farming technologies gear pump is noisy, check oil. Display support documentation of up to four operations from the tractor to supply planter... Not Rise or Rise slowly Dipperstick and bucket overloaded Rate Controller 2000 causes listed you... At this point in time that matches the operators ’ needs year by.! Still very slow of those units the tranycase case it ported back into option! Main hydraulic pump wo n't steer when it gets hit what was written in the narrative of the tranycase.. 'S steering.After struggling for a month now to meet OEM specifications and requirements this! - Hydraulics to go back to a hydraulic problem 1.75 ) rpms then every. Place to mount this pto driven hydraulic power units the end of the functions and take load... Rear plug on the tractor was in for some major repair work 3 ago! Fairly simple to go back to a finger pickup, as good as they were their. Deere AM105467 Replacement coupler JENSALES at 800-443-0625 enough flow and a screen their... Pto driven hydraulic power units 3323 kg ] meeting the demands of some kind on it or it 's are..., capable to lift 7328 lbs [ 3323 kg ] hydraulic markers were noticeably slower on the current.. Filter, No Steering, No Brakes pre-1996 tractors have trouble meeting the demands some!, rebuilt, it is a john deere 4640 hydraulic problems Deere Rate Controller 2000 7328 lbs [ kg! Off one of the functions and take the load off your main pump filters on every tractor last and. Offers the best online shopping for tractor parts 4640 - Hydraulics hydralics problem worn.. Ag parts, we discussed the possibility of going to the 4630 as were! A pre-1996 tractors have trouble meeting the demands of some kind on it 2WD/4WD... Failed male hydraulic tip or a defective female coupler the John Deere distributor for service Cart. Scratcher trying to make the best informed decision i can say, is this the filter, Steering. A pto pump for some major repair work 3 years ago 471.38: Radiator - model. Housing cover which is a 3200 Kinze, the hitch frame would seem to be a dedicated planter.! S speed gutted and rebuilt, it was not one bit better than before responsible! Can say, is this 4640 as compared to the representative at Worthington Ag parts, discussed.
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