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Thread: Cat D4 serial numbers

  1. #1
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    Default Cat D4 serial numbers

    Can anyone tell me what numbers and the year for a D4 7J series machines? I would think early 1940's but not sure of the number sequence.
    Many thanks
    Martyn

  2. #2
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    Default 7J

    According to the Cat SNID book the 7J started production in 1939 and the 5T D4 in 1943 and then the 6U @ 7U in 1947.

  3. #3
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    Jan 2007
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    devon uk
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    Default D4 serial numbers

    Between the 7J and 5T there were also the 2T series machines,7J 1939-1943, 2T 1943 to 1945, 5T 1945-1947. then they broke with traditionn and gave narrow and wide gauge separte serial numbers, narrow 6U series and wide gauge 7U series. 1947 to 1960? But I do know that the later D4C, 24A (UK built) started production in 1959!

  4. #4
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    Default D4s

    Catsilver, I think this Cat SNID sales book I got from the dealer is mixed up a lot. It shows as you said the 2T coming out in 1943 and also the 5T coming out in 1943 and the 5T RD4 coming out in 1945 both starting at 1 and up.

  5. #5
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    May 2007
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    Watlington, England
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    Default

    Hi Martyn
    Wendel's List show the following.....
    1939.......7J1 - 7J1754
    1940.......7J1755 - 7J4110
    1941.......7J4120 - 7J7544
    1942.......7J7545 - 7J9939
    1943.......7J9940 -
    I'm not sure what happened to 7J4111 - 7J 4119 probably a misprint.
    I'm the proud owner of 7J2832W (W = Wide Gauge).
    John Gaunt - Link Club Treasurer (Formerly ACMOC Chapter 2 Treasurer).
    1941 D7 7M
    1940 D4 7J
    1940 D2 5J
    1940 R2 4J

  6. #6
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    Default

    Thanks everyone.When I go down to see the machine I will post pictures of it.
    Martyn

  7. #7
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    Default

    There's a pretty good listing of the various D2 & D4 models over on the ACME board that breaks 'em down to years and serial numbers.

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