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Caterpillar 951B/951C Crawler Loader

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Caterpillar Crawler Loaders
Equipment Specifications - RitchieSpecs
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Caterpillar 951C
Caterpillar 951C
Caterpillar 951C bucket
The Caterpillar 951B crawler loader was introduced in 1967 in the USA and Japan. Production began in France a year later.

[edit] Features

The 951B has a D330 four-cylinder engine producing 85 flywheel horsepower (FWHP). It comes standard with electric start.

The 951B was manufactured in the USA, with a 79H or 86J serial number prefix; in Japan, with a 15H, 32F, 72J, or 78J prefix; and in Scotland, with a 69H prefix.

The 72J and 78J units have a direct drive transmission. All other units have powershift transmission and pedal steer.

The 69H, 32F, and 86J units have a 60-inch (152-cm) track gauge.

[edit] Modifications

Production of 15F, 78J, and 79H ended in 1968.

Production of 72J ended in 1970.

Caterpillar replaced the 951B with 951C in the USA and Japan in 1970. Most 951C units continued the previous 951B prefixes, but one new Japanese was introduced, with a 19H prefix.

The 19H unit has a 3304 four-cylinder engine producing 85 FWHP. It has a direct drive transmission. It comes standard with electric start, pedal steer, and a sealed loader linkage.

In 1971 and 1972 Cat added a sealed loader linkage, beginning with 69H01833, 32F00902, and 86J01992. At the same time the 32F and 86J units receieved hydraulic track adjusters, an automatic bucket positioner standard, and increased horsepower to 95 FWHP. The French unit received these other features beginning with 69H01869. The 19H unit had its horsepower increased to 95 FWHP, beginning with 19H01567.

In 1972 and 1974 a sleeve metering fuel system was added, beginning with 69H03509, 19H02173, 32F01330, and 86J02598. At the same time the 86J unit received a rollover protection system (ROPS).

In 1976 and 1977 Cat added a sealed and lubricated track (SALT), beginning with 69H04330, 19H02509, 32F01560, and 86J04520.

In 1977 an interim scroll fuel system and ROPS were added, beginning with 19H02474 and 32F01555.

Production ended in the USA in 1980.

Production ended in Japan and France in 1981.

Based on data from the sales database of Ritchie Bros. Auctioneers, it is estimated that more than 17,200 Caterpillar 951B/951C crawler loaders have been produced.

Highest Serial #
France
69H 05811
Japan
15F N/A
19H 02644
32F 01771
72J 01146
78J N/A
USA
79H 00354
86J 05514
Total = 17,240