Series 3G1-3G1971, 1934 - 1936

The DIESEL FORTY replaced the DIESEL THIRTY FIVE in 1934. Using the same engine, it had a slight increase in power from 41 D.H.P (Drawbar Horse Power) to 44 D.H.P.

Like most tractors of the period, the DIESEL FORTY was made in two versions, narrow 56 inch (see below) and wide 74 inch gauge versions. The track frames were now welded rather than riveted. The DIESEL FORTY was made in small numbers being replaced by the RD6 in 1936.

Cat DIESEL FORTY

Narrow (56 inch) gauge tractor above and wide (74 inch gauge below. Photographs courtesy Galynn Ferris

Cat DIESEL FORTY
Cat DIESEL FORTY

Production began in 1934 and continued until 1936 with only 1971 tractors being built.

DIESEL FORTY Details

3G1-3G1971
1934-1936
D6100 Diesel engine 3 cylinders 5 1/8inch x 6 1/2inch bore / stroke.
44.19 D.H.P.
Weight 14,700 lbs.

Below is a list of machines made by year and serial number.

Year 3G
1934 1 334
1935 335 1956
1936 1957 1971

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