U must need a injection pump rebuild or timing is off or blades are excessively dull, I pull a 15 foot and 20 full batwing in the same thickness of grass and 3rd gear no smoke
Unless the injection pump is turned up, JD 4020's only put out about 95 PTO Hp. I had a 1966 4020 with an M&W turbo kit and the pump turned up. She put out about 115 - 120 PTO Hp. I hate how they rate tractors by engine brake horsepower nowadays. It's inaccurate as hell, because of various powertrain losses beyond the crankshaft. PTO Hp was always the best apples-to-apples comparison method. Thanks to the modern "global economy & free trade" garbage of the 1990's for screwing that up too.
That tractor was the first to use the 404. Lowest go version the factory turned them up to 150 go on the 4630 and even higher on the combines like the 7720
@@henrycomputer1403 : Yeah, I'm well aware that Deere has different Hp versions of the same basic engines. In fact, most manufacturers do. Like I said, a stock, naturally aspirated JD 4020 (with the 404cid diesel engine) put out 95.86 PTO Hp from the factory. Thus, the OP's injection pump must be "turned up", if it's putting out 101 PTO Hp on a dyno. That was my whole point.
@@dieseldoc25 : You say 101 on an M&W? What exactly do you mean by that? Are you saying your 4020 is still naturally aspirated, and your 101 pto Hp number was derived from testing it on an M&W dynamometer? Or, are you saying your tractor has an aftermarket M&W turbocharger kit installed on it, as my tractor had?
Shit I run a 4010 diesel in the field every year. Runs mower, square baler, manure spreader, cultivator, ect. These machines may be old, but honestly I'd take old iron over the newer stuff(for the most part). We even utilize our john deere G my grandpa bough new in 51 still. Good equipment gets the job done. Dont need a 40k tractor.
@@lucaspeavey3787 : Equipment is made to be used, not just sit in a shed, or run once a year in a parade. It's age makes no difference. He isn't abusing it, and I guarantee he isn't fixing it 24/7. A well maintained 4020 sees less shop time than most modern junk tractors that have replaced it.
@@Kallaus_built : Nothing funny about it. That's all some people need. Not everyone runs gigantic corporate farms. The 4020 just might be the biggest tractor he has any need for. Every person's circumstances are different. One thing's for certain, you don't need a $40, 50, 60, 70+ thousand dollar tractor, when a $5,000 to $15,000 tractor will do the job just fine.
Thank you for that awesome short clip of the 4020 what a famous tractor! My son and I are off the farm but we watched that and it brought back memories you never forget the sound of a working 4020. John Deere and the engineers in that time did a work of art!
Goal was to make hay. I waited too long (work 60 hour weeks and have a 4 month old daughter), when I tried to run the haybine through I couldn’t keep from plugging it up. It wound up in the end being done by someone else with a discbine.
@@dieseldoc25 : Hmmm, that's rather odd. Never heard of a haybine constantly plugging up. Sounds like operator error to me. Was the crop all laid down & dense? Didn't appear to be from what I saw there. Perhaps you were trying to travel too fast while cutting the hay? Dunno... Seems odd. Curious, but what make & model haybine were you using? Been making hay for over 40+ years, even if late, it still mows & conditions with a decent haybine.
Dense is an understatement. First gear (2.2mph I believe). New holland 469 with good knives. This is on a slope, but the bottom of the slope is literally the Shenandoah River. The whole field stayed green even during our last 6 weeks with almost zero rain.
@@dieseldoc25 Ahh, gotcha. Damp is tough. We use tow-behind 479 New Hollands & an 8840 Case IH self-propelled windrower. Much drier land base too. Best of luck in your future haying experiences!
