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John Deere Tractors Discussion Forum
Show Parts for Model:

John Deere 4020 Serial Number

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fatbob50

03-04-2009 20:46:50
66.82.162.20



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I am trying to age my JD 4020. Every time I try to buy parts they want the year. I know the time frame but not the year. The serial number is SNT213R137964R. I think it is a 1968, but I am not certain. There is a picture of this tractor on my web site, (www.geocities.com/fatbob50). I went to put it back in the barn and this is as far as I got with it. I have been working on it in this location, so I have an excuse to not work on it when it is very cold. ;) Thanks for all the help with my questions. Bob

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Gerald J.

03-05-2009 09:48:04
4.254.68.115



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 Re: John Deere 4020 Serial Number in reply to fatbob50, 03-04-2009 20:46:50  
All the breaks in my early 4020 parts catalog are on serial numbers and most are at 91,000, but some are at other numbers before 200,999 that is the last number this book covers. There were significant changes made a 91,000, but not a signifficnt as those made at 201,000. There were essentially three models called 4020, those before 91,000, those after 201,000 and those in between. Those after 201,000 are known as "side console" and bring a premium. The differences are so great pre side console and side console that the parts catalogs and the shop manuals are separate and different. Some parts interchange, some will fit, but shouldn't be interchanged, some don't interchange and the hydraulics are drastically different.

It IS important to have the correct parts catalog and shop manual to fit the tractor at hand else you will be confused and can cause damage with improper tests and adjustments.

There are similar breaks in the 3020.

Gerald J.

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4020_1966

03-05-2009 09:24:02
75.207.202.39



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 Re: John Deere 4020 Serial Number in reply to fatbob50, 03-04-2009 20:46:50  
Mine is #136862 and is a '66. Yours and mine look a lot alike (a comment on appearance but not year...). What kind of work are you doing to it out of curiousity?



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fatbob50

03-05-2009 10:00:01
66.82.9.58



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 Re: John Deere 4020 Serial Number in reply to 4020_1966, 03-05-2009 09:24:02  
I am replacing the injector pump. I sent it out to have it rebuilt and in the process of putting it back on, I realized that the spring that goes on the bottom of the shaft is missing. (It is probably in the oil pan.) I ordered a new spring from John Deere and gave them the serial number T213R etc... they did not interpret the number correctly and started with the 213 instead of using the actual number which comes later in the serial number. Several times now I have gotten the wrong parts and I am just now realizing why. I guess the John Deere dealer does not have staff that can correctly interpret the serial number on it. The part they sold me was a R44686, and the part I need is a F1942R. I want to fix all the leaks and any problems with the tractor before moving on to the cosmetic part. When I bought the tractor, they told me it was either a '68 or a '69. I did not check it at that time as it was not important to me. Most of the time when I buy a tractor the seller exaggerates the age to make it sound newer. Bob

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thurlow

03-05-2009 07:31:00
74.177.51.91



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 Re: John Deere 4020 Serial Number in reply to fatbob50, 03-04-2009 20:46:50  
GENERALLY speaking, when your turn comes to be waited on, if you'll say, "I need a **** for an early model 4020 (diesel/synchro/power shift)", that'll give the part's guys enough infomation to get started.......assuming they know what they're doing. They MIGHT need some additional information and there are some additional.....minor.....serial number breaks, but I can't remember the last time that came into question when ordering parts. I suppose it might also matter whether or not they know you by name and print the appropriate type of ticket without asking. Depending on the dealership, it may (or may not) matter how well you're treated depending or whether or not you're wearing flip-flops/crocs/have an ear-ring. There may be a lady behind the counter and they may sell more lawnmowers than tractors, but around 'here', a tractor dealership still has a 'macho' aura......

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Mike M

03-05-2009 05:06:09
24.140.28.219



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 Re: John Deere 4020 Serial Number in reply to fatbob50, 03-04-2009 20:46:50  
Where ever you are buying your parts are confused ! John Deere has always used serial number for parts breaks and the year is irrelevent. They should be asking for the serial number, but of course you should have that with you to present to them anytime you go for parts.



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Tx Jim

03-05-2009 03:26:47
67.142.163.22



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 Re: John Deere 4020 Serial Number in reply to Alex S, 03-04-2009 20:46:50  
There's a list of serial numbers to the left side of this page. It shows "SN 137964" of this tractor to be a '66 model.
This post was edited by Tx Jim at 03:28:15 03/05/09.



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larryanderson

03-04-2009 22:54:42
75.104.160.38



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 Re: John Deere 4020 Serial Number in reply to fatbob50, 03-04-2009 20:46:50  
You might want to recheck your S.N. The tractor doesnt look like it is a 69.If it has an round muffler and the controls are on the dash it is a 68 or older. The manifold on left side will be rectangular to be newer than 66.Hope this helps as the picture is alittle hard to tell maybe Im not seeing console.



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fatbob50

03-04-2009 23:18:26
66.82.162.20



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 Re: John Deere 4020 Serial Number in reply to larryanderson, 03-04-2009 22:54:42  
Larry, I believe you are right. I think it is a '66, after reviewing the link again. It does have a round muffler. It does not have a side console, all the levers are on the dash. Sorry the picture was not much help. Thank you for your time, Bob



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