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John Deere Tractors Discussion Forum
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4010-4020

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BEWILDERED

02-24-2006 08:49:44




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What is the differance between these two tractors? I never have undrstood the numbering system of JD. Never found a book that could explain it very well.




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txgrn

02-24-2006 14:29:34




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 Re: 4010-4020 in reply to BEWILDERED, 02-24-2006 08:49:44  
And then there is something about a shear pin that the 4010 has on the PTO that the 20 doesn't requiring access to the rears (however you do that....top or split? dunno..... .) if it shears.

Had a 20 LP.....gone. Have a 10 Diesel. No problems so far.

Mark



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HTR

02-25-2006 05:31:00




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 Re: 4010-4020 in reply to txgrn, 02-24-2006 14:29:34  
There is no shear pin in the 4010 PTO. The thing that bends or breaks , is the pin that goes through the 540 shift collar. There is a rod that goes through the hollow PTO shaft, from the rear of the tractor to the front of the transmission housing where the gears and shift collars are. The back side of the 540 stub shaft is flat, and when bolted on pushes the rod forward, contacts the shift pin, and pushes the shift collar forward to engage the gear.

The shift mechanism, is spring loaded to disengage the 540, and engage the 1000 rpm. The back side of the 1000 stub shaft is hollow, to allow the shift rod to move rearward.

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txgrn

02-25-2006 19:49:39




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 Re: 4010-4020 in reply to HTR, 02-25-2006 05:31:00  
Well whatever it is, my neighbor had one and had to have it hauled to the JD house to get it fixed right in the middle of hay season.

I was happy as mine was a 20 and according to them I didn't have whatever broke and rendered the (540) pto useless....course I did have dual pto capability and shafts.

But now I have the 10 (another tractor). So it is good to know that he was blowing smoke....I guess. Don't know how he broke what he broke. Oh well.

Mark

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Dr.EVIL

02-24-2006 09:14:30




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 Re: 4010-4020 in reply to BEWILDERED, 02-24-2006 08:49:44  
And no Power Shift or Differential lock avail. on the 3010/4010. 3010/4010 had three reverse gears from the factory and 3020/4020 only had access to the two lowest reverse gears, although all the gears were still IN the transission for the third reverse. Probably a reverse avail in the 6th & 8th gear range too if You want a 25 mph reverse gear. Rear PTO shafts on the 3010/4010 were bolted on and tended to come loose causing problems in the PTO drive gears. 3020/4020 PTO stub shaft was held on securely with a snap ring. Most 3010/4010's only had 3-point hitch and a single remote outlet, Most 3020/4020 had 3-point and two remotes. The 3-point & number of remotes were an option so anything is/was possible on these 40+ yr old tractors. Once You get into the later model 3020/4020's with the side console hydraulics there's MANY more differences.

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Bob

02-24-2006 09:06:01




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 Re: 4010-4020 in reply to BEWILDERED, 02-24-2006 08:49:44  
4010 preceded the 4020.

SOME changes:

The 4010 ORIGINALLY had a 380 CID diesel vs. the 4020 (and updated 4010s') 404 CID

4010 rear axles are smaller, and I believe the final drive gears are lighter.



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