The numbers are relevant to Ford tractors manufactured between 1965 and 1975, located on the right hand side of the tractor on the flywheel housing, just rearwards of the starter motor.

They are given in 3 parts an example of which is given below…
D1013C
9G12C
B123456
This example above would be…
- a model 4000, agricultural all purpose, diesel, live 540 pto, 8 speed
- 1969, July, 12th of the month, afternoon shift
- built in Basildon, England, serial number 123456
Use the data below to identify your tractor.
FIRST PART OF NUMBER
Model
April ‘68 to 1975 (1965 to March ‘68 in brackets)
B(2) 2000
C(3) 3000
D(4) 4000
E(5) 5000
Chassis
10 Agricultural all purpose
11 LCG
12 Highway
13 Rice
20 Row crop
30 Vineyard
31 Narrow
40 Utility
50 Industrial
Fuel
1 Diesel
2 Gas
3 LP
PTO
1 No PTO
2 Trans 540
3 Live 540
4 Independent 540
5 Independent 540 - 1000
6 Independent 540, 1000
Transmission
A 4 speed
C 8 speed
E Select-O-speed
F 4/4 TC power reversing
K 6/4 Manual reversing
SECOND PART OF NUMBER
Year
1965 - 5
1966 - 6
1967 - 7
1968 - 8
1969 - 9
1970 - 0
1971 - 1
1972 - 2
1973 - 3
1974 - 4
Month
Jan - A
Feb - B
March - C
April - D
May - E
June - F
July - G
Aug - H
Sept - J
Oct - K
Nov - L
Dec - M
Day
Date of the month from 1 through to 31
Shift
Midnight - A
Day - B
Afternoon - C
THIRD PART OF NUMBER
Letter at beginning of serial number
B - Built in Basildon, England
C - Built in USA
Number in serial number
The production number of the tractor.