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sc ks | Is the mfwd actually factory? I had never seen it before...
http://www.ebay.com/itm/301581315858 |
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| Hydraulic front, not mechanical. Rare but not super rare. |
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south central MN | Yes it is a factory power front wheel drive, wheatland fenders would make it really rare. |
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Central ND |
There is such a thing as a hydraulic fwa 4020. It would be are to find some one that pays 55,000 for a 4020, but it all depends on how bad someone wants it. |
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S.Dakota | JD started putting the HFWD on the 20 series tractors in 1969. Until very recently nobody knew how many of these left the factory with the HFWD but new records were just discovered at the JD archives that lists which ones were born with the unusual option. There have been a lot of these fronts put on later for the collectability, it would be interesting to know if this one was an original 4wd tractor. |
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| Yes they made a mechanical front wheel drive. Rare Yes very rare. I have seen one on a 4020 in America and personally know the owner.
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WC-OH | My fil has one |
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North Central Texas | Deere didn't make or market a mfwd until the 80s starting in Europe. If someone owns a 4020 woth mfwd then it was added on. You could buy hpwd from the late 20 - 40 series. Most the 4020s had the wheatland covers on the tractor if not all originally. Lots of power front drives here just like the one in the picture but 30 and 40 series. Hard to find one with the hydraulic lines still hooked up because they were a pile of crap and leaked like no other. |
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| The 4020 pictured looks nice and could be authentic.The HFWA wasn't the best but they do sell well.Until I read SDGREENs response I didn't know that # existed for the front as the P.S. is a mystery and I don't know if the tractors ordered with standard options was recorded or not 72.4020s side counsel with P.S. trans in original condition or excellent restoration usually bring over $20K |
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Near Intersection of I-35 & I-90 Southern Mn. | SDGREEN - 7/14/2015 20:54
JD started putting the HFWD on the 20 series tractors in 1969. Until very recently nobody knew how many of these left the factory with the HFWD but new records were just discovered at the JD archives that lists which ones were born with the unusual option. There have been a lot of these fronts put on later for the collectability, it would be interesting to know if this one was an original 4wd tractor.
The guy who checks out my combine each year does various types of repairs in his farm shop. I used to work as a Tech with some electronic experience and a little training (a dangerous combination). He came to me with the switch that is used to work with the hyd front drive. I was thinking this was from a 3020 but maybe a 4020. He was helping with the restoration of this tractor.
By trial and error he was able to get the front wheels to turn after putting quite a bit of money into the hydraulic repair parts. By "hotwiring" he was able to get some action with the tractor on a stand. He felt that he had gotten the hydraulics fixed but that the problem then was with the electrical. Since quite a bit of money had already been spent on the tractor it was desirable to get the front to work from a collector standpoint.
A switch controlled an electric component which seemed defective and a replacement didn't seem to be available from Deere. This electric component ultimately controlled a hydraulic valve to provide the proper amount of oil to the front wheels. The switch itself was simple enough but this other component seemed to be the problem.
He had a schematic of how the this electric component was supposed to work. It seemed quite complex with some type of a high or low assist to keep the front wheels coordinated with the rears in the various gears. There was some complex linkage that connected this component to the shift lever. It looked to me that this linkage would be subject to many problems with age. It was interesting to investigate but I was not able to help him get the switch working.
I don't know if he ever found a source for a replacement switch or how the final restoration worked out.
Edited by tedbear 7/16/2015 06:37
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| 4020R - 7/14/2015 22:28
Yes they made a mechanical front wheel drive. Rare Yes very rare. I have seen one on a 4020 in America and personally know the owner.
Aftermarket built by Elwood. |
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Leeds, North Dakota | http://www.tractordata.com/farm-tractors/000/0/6/64-john-deere-4020... had to look myself, appears so, Scott. |
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| Here is a scan from my 1969 20 series, sales brochure.
 (4020 Power FWD.jpg)
 (4020 Tractor.jpg)
Attachments
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 4020 Power FWD.jpg (155KB - 241 downloads)
4020 Tractor.jpg (258KB - 231 downloads)
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Crawfordsville, Arkansas | Wheat77 - 7/15/2015 08:49
Here is a scan from my 1969 20 series, sales brochure.
Cool pic! Haven't seen that one before. |
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| Here is more from the late model John Deere 4000 and 4020 Operator's Manual.
This shows more about the switch, and how it operates with the transmission.
Also a spec sheet, showing more details.
 (4020 spec sheet..jpg)
 (OP manual 4020.jpg)
Attachments
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4020 spec sheet..jpg (275KB - 217 downloads)
OP manual 4020.jpg (288KB - 206 downloads)
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oregon |
We have one of those, bought new in 1970?, and we still use it. In fact I used it today. What is neat about the hydraulic front drive is that it spins faster than the rear wheels and keeps you lined up better in certain applications. We have 15.5 x 38's dualled on the rear and 12.4 x 24's on the front. Since the tractor is relatively light it goes through most mud holes that would sink a heavier tractor. |
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| SDGREEN, Do you know where I could get the archive information you spoke of? I have some of these tractors around that I have collected, and it would be nice to know if they are authentic. |
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Very Rare JD 4020
