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• John Deere Pin Number Decoder
• John Deere Pin Number Decoder Tool

(no year is specified in PIN number) PIN # Location: Same as John Deere. Note: On some models, second serial plate in cab under seat, or on shelf behind driver. Daewoo/Doosan Models 015 030 035 055 070 130LC-V 170LC-III 220LC 225LCV 255LCV 280LC 290LC 330LC 400LC 450LC 75V DX140LCV DX175LCV DX300 DX340 DX420 DX480 DX520 Serial Number Information. DecodeAll VIN decoder works for all vehicle types, including cars, motorcycles, RVs, trucks, buses and other. DecodeAll VIN decoder - Lookup and check ANY VIN number and get build sheet for free. Check vehicle history.

Hi,
Earlier today over in the Late Model Tech forum I referred to the Serial Number Magic Decoder Pin here in the FAQs.

You can search the John Deere illustrated parts catalog to find what you need and then enter your part number(s) into the search bar on any page of the Green Farm Parts web site. If you know your part number, you can bypass the John Deere parts diagram and type that directly into our search bar. A - PIN Number Plate. Each machine has identification plate. Letters and numbers stamped on plates identify a component or assembly. These characters are needed when ordering parts or identifying a machine for any John Deere product support program. When ordering parts, always furnish model and PIN number (A) as given on serial number plate.

Only, I cannot seem to find a post where it was spelled out stand-alone. Oh, I see it in several other threads. Just not by itself. So, time to do a little cutting and pasting:
Explanation of Type Codes per SM 2064
Basic Tractor Serial Number Explanation

John Deere Pin Number Decoder

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
4 = JD350
5 = JD450
3. This number designates tractor style
C = Crawler
E = Crawler Loader

John Deere Pin Number Decoder Tool

F = Crawler Dozer
4. This number designates the fuel type of the engine:
1 = Gasoline
3 = Diesel
(2 must have been LP Gas)
5. This letter designates the type of transmission:
C = Collar Shift
D = Directional Reverser (JD 350)
M = HLR (JD 450)
6. Sequence serial number of six digits
xxxxxx
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..
There. Now it may be more easily found.
There are threads for the crawler serial numbers by year for all the machines, each in their own thread, here in the FAQ.
Stan