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Caterpillar D7G Crawler Tractor

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Caterpillar Crawler Tractors
Equipment Specifications - RitchieSpecs
Free specifications for all classes of equipment
Cat D7G LGP with S-Dozer and ROPS
Caterpillar D7G with an S-Dozer and rollover protection system
Caterpillar CCU mounted on a Caterpillar D7G
Hyster D7F winch mounted on a Caterpillar D7G
The Caterpillar D7G Crawler Tractor was introduced in 1975 as the replacement for the D7F.

[edit] Features

The D7G has a D3306T six-cylinder engine, producing 200 flywheel horsepower. The D7G introduced three innovations by Caterpillar: a pilot hydraulic implement system replacing the traditional direct linkage to the hydraulic valves, sealed and lubricated track rails, which ran quietly and eliminated internal wear, and combined braking and steering controls.

[edit] Configurations

It is available in two configurations: the standard model has a track gauge of 78 inches (198 cm), which is eight inches wider than its predecessor; and the Low Ground Pressure (LGP) configuration, a new option for this tractor size from Cat, has an 86-inch (218-cm) track gauge and 34-inch (86-cm) standard shoe width. Both configurations are offered with the choice of either direct drive or powershift transmission.

Standard configuration, direct drive tractors produced in the USA have a 91V prefix; units with powershift transmission were given a 92V prefix. Standard configuration production in Japan was given the 64V prefix for direct drive and 65V for powershift machines.

Production of the D7G LGP configuration with a powershift transmission began in 1975 and was given the prefix 72W in the USA and 44W in Japan. The direct drive LGP model was only produced in Japan, with the prefix 45W.

[edit] Modifications

In 1975, because of new OSHA regulation, a rollover protection system (ROPS) canopy became standard on USA production beginning with 91V00971 and 92V02263. The 72W D7G LGP model was introduced with the ROPS canopy as standard at the commencement of production.

In 1978, an electric hour meter was added, beginning with 91V01289, 92V05924, and 72W00349. A folded core radiator was introduced beginning with 91V01882, 92V11467, 64V01107, and 65V04614 in 1983.

In 1984, the 3306 direct injection engine with the new scroll fuel system was introduced beginning with 91V01916, 92V11898, 64V01107, 65V04614, 44W00441, 45W00407, and 72W00608.

In 1981, Caterpillar introduced an agricultural version of the D7G produced in the USA with serial number prefix 35N. It featured a direct drive transmission with six forward and four reverse speeds. Caterpillar also began production of the D7G in Indonesia with the 7MB in 1997, 10 years after regular production had ended.

In 1997, Caterpillar began production in Indonesia, with a 7MB prefix.

A certified rebuild program was available with this model. Units beginning with the following serial number run were certified rebuilds: 35N75000, 44W75000, 64V75000, 65V75000, 72W75000, 91V75000, and 92V75000.

Production of the D7G ended in Japan in 2005 and the USA in 1987.

The Cat D7G was the last conventional “flat-track” model produced by Caterpillar in this size range. The Caterpillar D7G was replaced by the Caterpillar D7H, featuring the high-drive configuration.

Based on data from the sales database of Ritchie Bros. Auctioneers, it is estimated that more than 29,000 Caterpillar D7G crawler tractors have been produced.

Highest Serial #
Indonesia
7MB 03186
Japan
44W 00556
45W 00408
64V 01086
65V 08416
USA
35N 00353
72W 00717
91V 01932
92V 13013
Total = 29,667