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4020 broken in two - revisited (more pics)

4

4020

Member
Here are a couple pictures of the side mounting frames that I welded to the front weight brackets years ago to help strengthen the frame and then I added a crossmember underneath connecting the two brackets together under the engine oilpan, then I added a crossmember across the top of the loader above the hood and took all of the wobble and side to side twist out of it. The reason I did that was because I"ve worked on a couple of 4020"s in the past with the same frame brackets with no support going forward and they had broken the frames and stuck the fan thru the radiator, along with some other damage. Welding the bracket and the frame together probably did put extra pressure on the engine on the backside of the frame, so instead of the frame breaking, I broke the block. This time when I put it back together I"m going to run the framework all the way back to the rearend so I don"t have this happen again. Someone mentioned maybe I did not have it torqed right, but the last time I had it apart was in 1990 for the clutch, so I do not think that was the problem. After I broke this tractor I went to John Deere to see about buying a new John Deere 740 loader for the 4455 tractor. Like JDseller said, they don"t make a big loader anymore.
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You run duals and all those weights on a loader tractor? It"s a wonder you haven"t broken more. Just remeber it will break at weakest link you keep beefing up things it will just find another place to break kind of like a dog chasing his tail
 
Most people run fluid I run cast, no fluid. 4020s with no weight and a loader wont hardly back up on dry ground let alone in a sloppy lot.
 
JMS.That brace you have going to the back of the tractor, where and how does it bolt up at the back?
 
So can somebody explain to me what the deal is -- why do these John Deere tractors break in two? Not originally made for the stress of the loaders?
 
JMS Thanks. That is a good picture and you have the brace low enough to use the original battery boxes. I think I can make that work. Thanks for the ideal.
 
So with all this welding if the starter goes out what do you have to remove to get the starter off. You know it going to go in cold weather. This part of the country you just never see a loader on tractor that is not four wheel drive.
Very few two wheels with loaders.
 
This tractor has over 13,000 hours. The loader has been on it 24 years. The tractor and loader have had a lot of use. This tractor and loader gets used some almost everyday just not very many hours per day. When we broke it in two we where cleaning up behind a bulldozer and trackhoe. The 4020 has 10 cast weights, radials inside, good bias duels and the bad part a 16 foot field cultivator. We had to much traction. OOPS
 
Brace is a 2x4 channel...notice the stiffener on it- quarter x 4 inch....top side. Also makes an excellent step as a side benefit. Channel goes under the rear axle, bolts? IIRC a u bolt around the axle.......Will Herring- you asked why JD breaks.....3020 has only 2 bolts at the rear of the engine...frame to engine. Never heard of a 4020 (4 bolts) breaking, but 3020s do. first time...tap the two holes heavier, second tine, weld the bolt in. third time, buy a new engine block!!! Yes, neighbors did). Signal of a problem is when you see the muffler go side to side while the hood does not! BTDT. made my fix early 80s.....broke nothing since. And I loaded tons off the feedlot for 20 years- 7 foot bucket! Did replace front hubs with 4020 hubs- heavier casting....other than that...nada
 
jm When I bought this tractor there werent any 4 wheel drives. Then in 1992 I cut back to only 100 sows farrow to finish and didnt need to up grade any more. So I just stayed with the 4020 since I didnt use it in the field that much any more.
 
Welded a plate to the loader mount frame- drilled two holes, 3/4 inch? Channel and end plate bolts to that.............one bolt outside of JD frame, other inside.
 
JMS I have never heard of a 4020 breaking in two. untell we did it. I had a 7 foot bucket also, it was so worn out it was not rebuildable so I got a used 6 footer and rebuilt it to use. And around 1989 I put a 4430 front end under it. That fixed a lot of front end problems.
 
My inlaws put a Westendorf WL40 on a 4020 way back in the late seventies, and I remember seeing a reinforcing plate that I believe might have gone to the back axle that Westendorf recommended for a 4020. So Westendorf obviously knew about this weakness back then and offered a method of prevention for their loaders. Jim
 
Just find a local Koyker dealer. They are making the JD 740 loader exactly like they where from JD but with a slightly different bucket.

They bought the rights and tooling from JD.

Here are pictures of the Koyker 740 Self leveling and a 740 Std loader.
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Koyker 740 loader
 
All this time money and tinkering to something into what it"s not.
You could have paid less in the long run with an industrial articulated loader. Or even a backhoe tractor.
Hydrostatic transmission beats a dry clutch when digging up a load.
 

Aw come on b&d. Jeez he only had 5 rear wheel weights per side with duals and a field cultivator for ballast on a FARM TRACTOR and it snapped in TWO PIECES why should he need an industrial machine?
 
well by industrial he means something meant to take the abuse that digging tree roots out of the ground makes, like a backhoe or a bull dozer not a poor 100 hp farm tractor and manure loader which was ballasted to the point a 160 hp tractor would be, tis a shame that a 4020 should have to endure such abuse, a poor poor tractor that relies on good decisions from the operator as to say when enough is enough, especially when Caterpillar has been making bull dozers for such a long time and they are reliable and work well for tree removal, tis a shame, and its too bad Deere doesnt make blocks for them tractors any more, why dont we just ruin the ones still left?
Instead of "Could of had a V8" maybe it should be " Should of had a D8" ?
 
Oh you know working at the shop, moving cows home and managing to use the 4020's with out abusing them, just the normal life of someone who cares about their equipment. and you I bet you have been fixing something that could have been avoided by using some common sense
 
Well the work in the pictures is all we have gotten done. Been sorting cattle. Going to ship two pots wednesday. Been grinding feed with one of the old school 7520s. It dose make that 4 ton mill look little.
 
sideconsole: I just got in from grinding feed at 6:30. The grinder mixer is a case ih 1350 self contained electric over hydraulic and a trouble some electric scale. we have two of them old 7520s. By the way my old 4020 was allmost a sideconsole #198,xxx. Some time when I have time I will post a couple pictures of the old 7520s. Sometime when I time I will tell the story of the 4520 one of the boys bought, powershift transmission was in a box. after hunting down obsolete parts he got it going it sounded sweet for around 50 hours then the pump went wide open, bad deal. I will tell the hole story with some pictures sometime.
 
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