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Look at the ends of the rocker shaft, are the rubber plugs right against the cotter pins? Had a 4020 that the rubber plugs got hard and moved into the shaft tube and cut off the oil to the shaft. But it does sound like the problem is deeper. The brazing rod trick that Janicholson mentioned won't work unless the head is off.4020 starter problem - 24volt. ... My older 4020 with hydraulic levers on the dash is having starter problems. It's still a 24 volt system. ... A forum community dedicated to John Deere tractor owners and enthusiasts. Come join the discussion about towing, PTO’s, reviews, attachments, modifications, troubleshooting, maintenance ...The common problems with the John Deere 4020 include fuel system issues and electrical problems. The John Deere 4020 is a reliable tractor that has been used …Mar 12, 2013 · Location. Coyote Flats, Texas. Mar 12, 2013. #1. O-rings blown in steering motor. These can be R&R'd by removing one side frame rail. Caution block tractor up carefully and spindle must be timed to piston. R34748 SEAL,OIL ADD 30.28 USD 30.28 USD. 2-R26290 RING,BACK-UP ADD 5.04 USD 10.08 USD. Posted 1/9/2009 23:52 (#564641 - in reply to #564612) Subject: Re: 4020 gas. Oh yah, stuck centrifugal weights is a problem. Makes for really hard cranking when they are stuck advanced or the springs have rusted off. The fuel shut off solenoid was retrofitted to the early tractors in many cases.06-08-2006 22:44:16. Report to Moderator. Re: 4020 powershift no park in reply to toby, 06-07-2006 04:17:49. remove the right battery box and the cable is on the side of trans case at the top. Most of the time the cable comes unhooked or the clamp that holds the cable housing is loose or broken. If the cable is stiff i have drilled a small hole ...Sep 29, 2016. #1. Hello, While investigating the cause of poor running issues / top end noise on our 4020 we found significant wear in the valve adjuster / pushrod region on some of the cylinders. Further inspection revealed that the rear facing plug in the rocker arm shaft had shifted, cutting off the oil supply to a good portion of the top end.Apr 27, 2015. #1. (quoted from post at 16:34:03 04/27/15) Started 4020 other day ran 5min and died. Wouldnt start. Tracked it down to what I thought. was an injector pump. Had it rebuild still not. starting. So far I have cleaned all the fuel lines and.Re: 4020 powershift problem in reply to Wayne, 03-06-2004 22:56:18. Our 4020 had the same problem yours has with the park. I was able to fix it by shortening the park cable. You can do this behind the dash by taking off the hood cowl (I think that's what it's called). It has a threaded end so it can be shortened.4020 History. 4020 Fans; Models 4020, 3020, 4000 - Fan Letter; 4020 Photos; 4020 Serial Numbers; 4320 (Super 4020) "'The Long Green Line (tm)' of John Deere Tractors has included several that were classic - the models 'D', 'A' and 'G', among others. But none wears that designation more deservedly than the 4020. It was the most popular tractor of …According to John M. Eades, author of the book "Gambling Addiction," people with gambling problems often find themselves deep in financial debt. To finance their addiction, problem...If it still fails to work, contact a mechanic. 3. Oil. To ensure that your 3-point hitch runs smoothly, it is important to use the correct viscosity of hyd oil. Using the wrong type of oil can lead to a variety of problems. If you’re using the correct viscosity of oil, then check your oil level.Now we are a dairy farm. We have a 1964 John Deere 4020 diesel, the weight retainer for the governor in the injector pump broke so we ordered the part and began to disassemble the pump. (uses the RoosaMaster DB pump). During disassembly, my Dad broke the "cam locating screw" off in the housing, so we cannot continue to …The John Deere 4020 may experience problems regarding the hydraulic, clutch, steering, powershift, and PTO mechanisms. Worn-out, damaged, and loose …Weird shifting problem - JD 4020. We have a 1969 John Deere 4020. A while back I began having shifting problems: If I put it in 5R, I need to fully let out the clutch for at least a 2 full seconds, or I will only be able to shift it into 5, 4, and 7. If I don't fully let it out, I'll have to turn the tractor off, turn it back on, place it in ...I run a 64 4020 gas, first year for 4020 so your late 4010 would be a 63. The aluminum carb was a real bad deal, the big iron carb with vacuum accelerator pump was not much better. In my opinion the carb on the 4020 was much oversize for the application and runs poor at anything but full load.Apr 27, 2015. #1. (quoted from post at 16:34:03 04/27/15) Started 4020 other day ran 5min and died. Wouldnt start. Tracked it down to what I thought. was an injector pump. Had it rebuild still not. starting. So far I have cleaned all the fuel lines and.John Deere 4020 12-Volt Wiring Common Issues and Troubleshooting Tips. The John Deere 4020 is a popular tractor model among farmers and enthusiasts. However, like any other machinery, it may encounter wiring issues from time to time. Here are some common problems and troubleshooting tips related to the 12-volt wiring on the John …

11 Jun 2016 ... Comments8 ; John Deere 4020 Injector Pump Problems! PatrickShivers · 7.5K views ; John Deere 4020 diesel fuel system bleeding - zeketheantiquefreak.Member. Apr 26, 2011. #1. I am having two problems with my 1971 4320 with 7500 original hours. The first is that there is a rattling noise that starts shortly after the engine is started and it never quits. I have had this tractor for 4 years and it hasn"t gotton any worse or better. It sounds like it is coming from the front pump area.Subject: Reman JD 4020 cam or new. Eastern Iowa. I need to buy a camshaft for my 4020 to replace an aftermarket cam I'm sending back. Deere has OEM original spec. reground cams and brand new cams available. A new cam is going to cost a couple hundred more than the reground cam. Any opinions on this. They do offer $100 core for the old cam ...John Deere 4020 - Problems and repair. Yesterday I discovered trouble with my John Deere 4020. Diesel will not crank. Tell me please what could be the damage? You must use the recommended fuel grade. Drive high pressure fuel pump is broken. Check and repair. Wrong fuel injection pump timing. Adjust if needed.

Posted 4/28/2023 11:47 (#10207028 - in reply to #10205538) Subject: RE: 4320 John Deere loose hydraulic when clutch is depressed. ecmn. Key take away is "long time" you have some reserve between oil returning from something, cooler and reservoir. The time is the big difference between a problem or not.John Deere 4020 tractor is a versatile and robust agricultural machine known for its power and reliability. It offers options for both diesel and gasoline engines, multiple transmission choices, and a range of features that make it suitable for various farming and field applications. Additional insights and information about the John Deere 4020:#1 · Aug 13, 2020. I have a John Deere 4020 and the power steering has stopped working in one direction. When this tractor was evening used daily we never had any trouble with ……

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. May 22, 2009 · I have a '67 4020. It has the tw. Possible cause: But the 4020, 4230, etc. use large-frame starters the larger starter-solenoi.