I looked at a Deere 4020 today with a cab. Runs and drives really well, all the glass is there, AC is non-functional but otherwise, it's complete and runs really well. They're asking $8900 for it...

I'm purchasing about 12 acres of pasture land & I have the opportunity to buy a 1966 4020 John Deere for $12,000. I was told it has 97 hp. The seller told me he replaced the injector pump, new...

I am replacing the rockshaft seals 1. Lift arms are all they way lowered 2. Load sense handle is adjust all the way down The rockshaft sensor arm is now blocking me from putting the shaft...

Thought I started a thread about this but then couldn't find it, not sure what happened. So I'll do it again, sorry if it duplicates..... Ran into this 18 year old young man plowing with a very...

Hi Folks- I have a John Deere 570A motorgrader that supposedly shares the same powershift transmission with the 4020, less the PTO. Anyway, all forward gears are working properly, but reverse has...

I recently purchased a 4020 Gas from a friend who got it through a barn find. It's a 4020 Gas Powershift, with a cab and seems to be pretty clean. The main plans for it is just do some plowing for...

I posted a link since I did not know if actually posting the picture would run afoul of copyright rules. https://www.chipfoose.com/wp-content/uploads/2017/08/Tractor20color2001_051-37.jpg

Should you chg both hoses on JD 4020 at same time on lift arm

Hello I'm working on my 4020 again, getting ready to put the new head gasket in and I'm finding different info on cylinder head torque specs useing new bolts. Does anyone have any advice...

People say size, weight and tires make a difference. Obviously the 4020 is bigger and heavier and this one has old R1 tires, but they still have good tread. His FEL is a lot bigger too. Same...

JD 4020 keeps getting water in hydraulic fluid. I have heard that a gasket under the floor plate in the cab can go bad. Has anyone had this problem. Never has done it in 20 years-now twice in...

OK, so the engine(s) aren't in one of my tractors, but in my trawler - Grand Banks / American Marine marinized Deere 6404 tractor engines with Roosa Master DM injection pumps. One engine...

Hi everyone, I am posting just to get some ideas on where to start the diagnosis on this generator issue . This was my grandfathers tractor , it sold at auction , and today I found it and...

I have the option to buy a non running 1970 John Deere 4020 with a cab. It has a bad engine. The rear end has been rebuilt at one point, and a dent in the hood. I havent seen the tractor in person...

I have filters. Not sure where hydraulic filter is at. Any pics would help. Then there is I am told a suction screen ? Where is this plug at? Also having troubles with the shifting linkage. It is...

I have the required 9 bolt clamp on hubs for a John Deere 4020. Trying to find rims just isn't happening. Their must be thousands of rims in the weeds. I have checked all the adds I have...

I'm looking at a JD 4020 that is a few hundred miles away. The asking price is 8900 and hours are unknown so I'm assuming the hour meter isn't functional. The paint is good and there are no leaks...

My good old do anything 4020 is in need of rims for rear duals. I have the hubs but no rims. Any suggestions on where to try to find a pair. I have just about given up searching the net. I am...

New owner 1966 jd 4020. 24v to 12v conversion previously. New alternator, batteries check good. Start with full charge and batteries quickly discharge while tractor runs. Any ideas?

I'm looking at a old 4020 2wd, thinking it'd be good to pull a large bush hog mower. Not running right now, but looks pretty good, not all beat up and has good rubber. Wondering what $$ I should...

I just bought a JD 4020 tractor and am attempting to complete some well needed maintenance, including changing all the fluids and filters. The fan belt is very poor so I bought a new one for...

Hi guys, My neighbor has a 1969 (I think) John Deere 4020. He only really uses the tractor a few times a year to bush hog 30 acres. He was bush hogging and literally made one pass and the...

When my 4020 gets hot the hydralulics and power steering and brakes stop working. After sitting a short while they work again. I changed the fluid 2 wksd ago. Maybe I put in the wrong...

Hi all. I have a John Deere 4020 that is getting diesel in the oil. Dealer says it needs Injection Pump. I've never used a additive to lube the pump and wonder if the pump is worn because of this...

I need to fit a Farmhand f11 loader to a JD 4020. Need Help

We have an old (dash model) 4020 that the steering is acting up and I need to know what the probable cause is. The issue is it seems to steer to the right fairly well. When turning to the left...

I have a '65 4020 that leaks down on the 3 pt. hitch while using implements. Is this the rockshaft control valve and what will it take to stop the leaking down?

Hey guys Im new to the tractor game and I came upon a John Deere 4020 with a front end loader. The problem is the PTO is not working. They want 6000 for it. How expensive or hard is it to...

i have a jd 4020 and can't get the wiring for the switch key right, because there are no marks to show where the blue, red , yellow,and brown wires go.mine is a 6 blade switch, 2 on left, 2 in...

Just to make sure I'm not missing something. Our 1968 4020 seems to lose prime on the hydraulics after it has been sitting for a while. I don't see any major leaks and it's not losing oil. It...

I put this on the John Deere forum and someone suggested that I put it out here: Helping Mom sell Dads old tractor, its a John Deere 4020 propane, auto shifter, 8 forward and 4 reverse, still...

Does anyone know where to get a pivot valve for the hydraulic system that will fit on a John Deere 4020 tractor? I've been told that you can't get them from JD

I have a front end loader on my 4020 and was using it to push some trees and brush I had cut months earlier. Transmission working fine one second, then moved the gear shifter to reverse and...

My JD4020 has an old Deere loader originally intended for a much smaller industrial tractor (a 1010 backhoe) and the loader just isn't sized right for the tractor and sits too far forward. The...

What does a '68 John Deere 4020 diesel with a WFE and a #48 loader weight?

We're considering a '68 JD 4020 diesel. I know their John Deere's most popular tractor ever made, but I also know everything has it's flaw's. What should we look for, or look out for, when going...

I have a JD 4020 was pulling it to a shop. The tranny jumped out of neutral and started whining. We got it back in Neutral and pulled it to the shop. After we got it running the transmission seems...

Trying to install a JD ported filter cover (PN T31170 Or L55982) on a JD 4020/JD4010 as a replacement of the factor non-ported cover. The ported filter cover will fit, but it is longer than the...

Getting ready to look over a purchase on a 4020 syncro shift. Anybody have a short list of "look out for this" items?

Hello all, I was running my 4020 in a dusty field and the engine stopped very abruptly. I didn't see any smoke or anything else that would indicate an overheat(it had only been running for about...

This is how a 4020 was listed in the auction listing, that sold last Saturday, about 5 miles from me. Wish I could have gone. Everything he had was really well taken care of. Sweet '72 JD...

i recently purchased a 1972 4020 gas with dual remotes, cab, full 3 point, synchro trans. seems to be 2 serial numbers,362gra, and 265092r, can somebody decipher these for me thanks

If there is anyone out there that has a wiring diagram for a 4020 propane wireing diagram please email me a copy. I will love your neck and dance at your next wedding with cowbells on. Not to...

First I would like to apologize if this has already been addressed but I did a search I could not find the information. I am wanting to add a 3 spool valve to my 4020 to operate a batwing mower...

Hello, I was wanting to view how the new EH 3rd scv, the 4th & 5th scv, and the Power Beyond kit plumb together on the new MY2011 4020 series compact tractors (Open Station). I have looked at...

there are some other auctions covered too but I was surprised to see the 4020 went for $50,000! looks to be in great condition though. very well kept. ya get what you pay for JD 4020 Tractor Sold...

I bought a 1968 4020 a year ago and it has a loader on it. The numbers on the tag are "1010". Is this the right loader for this tractor? I noticed under the green paint there was yellow paint...

Inherited a 4020 diesel. The tractor runs but appears to need some work to make it right. I am interested in seeing if this is something a collector might be interested in and what someone would...

Just below the dash on the left hand side of the sonsole, say directly left of the Quick Start port. There is a small pull knob that seems to be stuck but even if it wasn't I still ahve absolutely...

Any recommendations for oil for my JD4020?

I have a 68 4020 and haven't ordered an operators manual yet. The tractor has a Powershift Tranny which I love but I can seem to find the diff lock. The repair manual discusses one but Alas I...

Has anyone changed one before? is it something I can do myself? My steering works great to the left but is sluggish and weak to the right. guy I bought the tractor off said to buy a rebuilt...

Actually two questions I have a 68 4020 with a 148 Loader. The loader controls are actually the rear hydraulic controls and somewhat hard to reach to control the loader with any finesse. Can I...

Hello, I am south of San Antonio, Texas and urgently need a front-end loader in good condition for a John Deere 4020. If you know of one that is available please contact me. Thank you.

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...

need to know if anyone has schematic for headlight switch (tractor is now 12 volt :confused:

A good friend of mine is a cattle farmer and is selling his 4020 after he replaced it with a kubota 90hp cab and air tractor. I have about 50 acres and already have 2 tractors, a 8N and a 05 5103...

A friend has a JD4020 and several attachments (disk, box blade) which he has offered to lend me. However our hydraulic connectors are different, I have a JD 5303. Do they make a adaptor...

I have a John Deere 4020 that runs on propane - however, a new radiator was installed so there are no tank shutoff rods going into the cab. The tank seems to leak propane anyway and I don't have...

I've been knocking along with my little JD 850 diesel, and the hay making needs and business have grown around here, and it's clear I need 2 tractors, and one needs to be larger. Most of my needs...

I have a late model 4020 from which someone removed the starter. We have purchased new starter - but need to know where each wire connects. Do not want to take chance of damage by wiring it...

I just bought a john deere 1967 4020 with a farmhand 258 loader. I would like to have my bucket quick a tach. do you know where I can get the parts to do this? also it looks like the loader is a...

I will be picking mine up somewhere around the end of this coming week hopefully, problem is, i left the only large enough trailer out in Ohio with one of our cars until end of this month... only...

What does a cab model 4720 weigh? round about without any ballast box, just fueled up with a 400x or cx loader? What is the top height with the R4s to the top of the cab? I have about 8 feet of...

I've got a chance to buy a rough 4020 that belongs to my buddy's MIL. The sheet metal will need replacement if I want to restore it to a decent condition. I know they sell for $8500-12000...

Hello all, Have a problem with my 4020. This past summer - if the tractor sat for more than 2-3 days...it wouldnt start. At the time - was a 24v system. 1st thing I did was replace the...

Just traded my JD4410 in for a JD4120 and am looking for ideas on where others are chaining down their tractors that have loaders insalled for trailering. I was looking things over and was...

Hey John could you do me a favor and look up in your source and see what a 1967 JD 4020 with 5500 hours would be worth. Thanks much.