JD350 thru JD350D Serial Numbers

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Tigerhaze
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Post by Tigerhaze » Thu Jan 23, 2014 3:26 pm

Too many- this has been discussed in other threads that you can search. I believe the second letter ("E") has to do with whether it is a bare crawler, dozer crawler, or loader but am not positive. If you search for "CE" you will eventually find the thread that discussed this, and one of those discussions was only a month or two ago.
(1) JD Straight 450 crawler dozer with manual outside blade; (2) JD 2010 diesel crawler loaders; (1) JD 2010 diesel dozer with hydraulic 6-way blade; (2) Model 50 backhoe attachments, misc. other construction equipment

Toomanytractors
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Post by Toomanytractors » Sat Jan 25, 2014 9:48 pm

Thanks for the information. I try finding it.
How sad it is when one sees only the machine and not the artistry of heart and soul that designed it.

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Stan Disbrow
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Post by Stan Disbrow » Sun Jan 26, 2014 7:10 am

Hi,

In the serial number string, E means Loader and F means Dozer from the factory. But, in the model number E means economy, IIRC. Meaning one without all the toys. To figure it out for sure, decode the serial number string.


Explanation of Type Codes per SM 2064
Basic Tractor Serial Number Explanation

1 2 3 4 5 6 7
| | | | | | |
T 5 F 3 M xxxxxx T

1. The first letter designates the application T = Tractor

2. This number designates the series 5 = JD450

3. This number designates tractor style
C = Crawler
E = Crawler Loader
F = Crawler Dozer

4. This number designates the fuel type of the engine:
1 = Gasoline
3 = Diesel

5. This letter designates the type of transmission:
C = Collar Shift
D = Directional Reverser

6. Sequence serial number of six digits

7. This letter designates the plant:
T = John Deere Dubuque Tractor Works

Thanks to Ihoulton who originally posted this over in the 450 serial number thread.

Stan
Last edited by Stan Disbrow on Wed Mar 26, 2014 5:07 am, edited 1 time in total.
There's No Such Thing As A Cheap Crawler!

Have: '58 JD 420c 5-roller w/62 inside manual blade
Have: '78 JD350C w/6310 outside manual blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Also Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)

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JPignatello
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JD 350 serial numbers

Post by JPignatello » Mon Mar 24, 2014 9:22 am

So if I am understanding everything. My machine with a number of T4F3D-024448T would be a 1976 350C? The guy we just bought it from thought it might be a 350D but he was not 100% sure.
1951 Ford F2
1996 Ford F350 7.3 5 spd
1966Chevy C60 Dump truck
1966 JD 350
1970 Ford Backhoe

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Lavoy
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Post by Lavoy » Mon Mar 24, 2014 12:38 pm

I would say that 24,XXX would be a 66 straight, not a 76 C.
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Parts and restoration for antique and late model John Deere crawlers.
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Stan Disbrow
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Post by Stan Disbrow » Mon Mar 24, 2014 1:08 pm

Hi,

Exactly. That leading '0' changed to a '1' in 1969.

Stan
There's No Such Thing As A Cheap Crawler!

Have: '58 JD 420c 5-roller w/62 inside manual blade
Have: '78 JD350C w/6310 outside manual blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Also Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)

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Tigerhaze
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Re: JD 350 serial numbers

Post by Tigerhaze » Mon Mar 24, 2014 6:52 pm

JPignatello wrote:So if I am understanding everything. My machine with a number of T4F3D-024448T would be a 1976 350C? The guy we just bought it from thought it might be a 350D but he was not 100% sure.
Lavoy/Stan- what does the "D" stand for- directional reverser?
(1) JD Straight 450 crawler dozer with manual outside blade; (2) JD 2010 diesel crawler loaders; (1) JD 2010 diesel dozer with hydraulic 6-way blade; (2) Model 50 backhoe attachments, misc. other construction equipment

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Stan Disbrow
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Post by Stan Disbrow » Mon Mar 24, 2014 8:02 pm

Hi,

The letters stand for major redesigns.

In the early days, they changed the model numbers: 40, 420, 430, 440. Then they used letters for the type: S for standard, C for crawler, etc. Somewhere along the 420, they started using I for industrial. The letters separated machine styles.

By the time they revamped Dubuque into an Industrial machine only plant, they decided to make the machine types their own model number prefaced with JD to indicate industrial machines from agricultural.

So, the new model for the smallest industrial crawler was the JD350. There was no JD350 wheel tractor. They were all crawlers. They made that for years, then performed a major redesign. They called that the JD350B. They made that for years as well, then redesigned it again and it became the JD350C.

That was a major redesign in that they redid the final drives from dry steering clutches to much longer lived wet clutches. They made that for years and then redesigned one last time into the JD350D.

The problem is, way too many people recall when the 'C' meant Crawler. So, when they get around to re-decal-ing the thing after performing a 'rebuild in a can', they stick on 'JD350C'. - and it is probably an original JD350 'no letter' machine.

Which, we tell by the serial number list at the beginning of this thread.

BTW, we call a 'no letter' a 'straight', as in "a straight 350". That does not mean it has nothing bent or twisted in it. :P

We probably should refer to a straight 350 or 450 as an 'A'. Deere never used that letter to refer to the first pass designs. But, by using a 'B' for the first redesign, they imply the originals were 'A'. But, we don't because that would confuse the heck out of the parts guys, trying to look up an 'A' that does not exist anywhere.

Those guys get confused enough as it is when we want parts for these old, obsolete, machines. ;)

Stan
There's No Such Thing As A Cheap Crawler!

Have: '58 JD 420c 5-roller w/62 inside manual blade
Have: '78 JD350C w/6310 outside manual blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Also Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)

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JPignatello
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Re: JD 350 serial numbers

Post by JPignatello » Mon Mar 24, 2014 11:43 pm

JPignatello wrote:So if I am understanding everything. My machine with a number of T4F3D-024448T would be a 1976 350C? The guy we just bought it from thought it might be a 350D but he was not 100% sure.
Guys thank you for the quick help and history of the models. My Dad recalls running what he thinks may have been the same model machine for his uncle many moons ago but he has not had one since and this is my first experience with an older dozer. I had a 450G that he rented for me when I was doing a power line job off the road 14 years ago.

I am sure I am going to have many questions on operation and repair of the machine as we get into it. But my first question is if the reverser is adjustable for neutral? I started the machine up tonight (it was about 28 deg out) and the machine jumped when I started to let the clutch out even though the reverser was in neutral. Also what oil does the reverser take?
1951 Ford F2
1996 Ford F350 7.3 5 spd
1966Chevy C60 Dump truck
1966 JD 350
1970 Ford Backhoe

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Stan Disbrow
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Post by Stan Disbrow » Tue Mar 25, 2014 7:00 am

Hi,

It should not do that, but you might be on the right track with the oil. It ought to have HyGard in it, IIRC, which is the current Deere hyd oil.

You might want to make up a new thread in the Late Model forum. Not too many folks look at this thread unless they need to look up a serial number to get their machine production year....

Stan
There's No Such Thing As A Cheap Crawler!

Have: '58 JD 420c 5-roller w/62 inside manual blade
Have: '78 JD350C w/6310 outside manual blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Also Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)

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Tigerhaze
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Joined: Thu Jul 06, 2006 12:13 pm
Location: West-Central MO

Post by Tigerhaze » Tue Mar 25, 2014 11:59 am

Hi Stan-

I read your response and found it very interesting to read how the model variants were lettered. However my question was specific to Jpig's serial number that had a "D" digit in the 5th column for "transmission type".

I'm assuming since "C" was collar shift and "M" is HLR, that "D" was directional reverser but would still like to confirm that is true.
(1) JD Straight 450 crawler dozer with manual outside blade; (2) JD 2010 diesel crawler loaders; (1) JD 2010 diesel dozer with hydraulic 6-way blade; (2) Model 50 backhoe attachments, misc. other construction equipment

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Lavoy
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Post by Lavoy » Tue Mar 25, 2014 3:45 pm

D is sliding gear with reverser for 350, Stan was referencing 450.
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com

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Stan Disbrow
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Post by Stan Disbrow » Wed Mar 26, 2014 5:10 am

Hi,

Oops. I had copied that from a different discussion, which was originally regarding 450s. I forgot to change that reference. I just fixed it. :)

Stan
There's No Such Thing As A Cheap Crawler!

Have: '58 JD 420c 5-roller w/62 inside manual blade
Have: '78 JD350C w/6310 outside manual blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Also Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)

Bearbutler
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JD-350?

Post by Bearbutler » Sun Apr 06, 2014 3:48 pm

New to this board , Thanks for adding me , Just bought a John Deere Crawler with a Drott 4 n1 bucket , I don't know for sure What it is but after looking around on this board Im sure its a 350 , Directional shifter is on the dash , Its a diesel , on the dash it has a plate that says made in France and has the following number on it E7350 000279CD , The only other number I can find anywhere is on the frame under the hydraulic tank T24856 , Anyone have any idea what year it might be? Any help would be greatly appreciated ..

Bear !

alvanskl
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German JD350C

Post by alvanskl » Thu Feb 26, 2015 12:50 pm

Recently purchased a JD350C crawler-dozer with a manual 6-way blade.
In the cockpit there is a metal tag mounted below the right side arm rest that says "Made in Germany S/N T4F3D o65245L"

Is this right for a 350C?

On he bulkhead aft of the diesel engine are numbers: T244o44
T244o54
which are compatible wih a 1976 JD350C
Light was low so the 4's might be 6's but still a 1976 JD350C

These s/n locations are different than the Parts Manual.

Any one else have a JD350 made in Germany??

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