Caterpillar D3C Series III Crawler Tractor
It is available in two configurations: the standard model has a track gauge of 56 or 57 inches (142 or 145 cm); the Low Ground Pressure (LGP) configuration has a 65- or 79-inch (165- or 201-cm) track gauge. Standard tractors have a powershift-torque converter (PS-TC) planetary transmission. LGP tractors are available with a PS-TC or powershift-direct drive (PS-DD) planetary transmission. Both configurations have three speeds forward, three reverse.
Standard tractors have a 6SL and 7GS serial number prefix. The 6SL has a 56-inch (142-cm) track gauge, the 7GS has 57-inch (145-cm) track gauge.
LGP tractors have a 7XL, 8DL, and 9CL prefix. The 7XL and 9CL both have a 65-inch (165-cm) track gauge and PS-TC transmission. The 8DL has a 79-inch (201-cm) track gauge and a PS-DD transmission.
In 1993 and 1995, Caterpillar made modifications to the steering valve, beginning with 8DL00042, 9CL00329, 6SL01089, and 7XL00438.
The new standard configuration tractors have 4KS, 4TS, 7GS, and 9TS prefixes.
The new LGP configuration tractors have 5GS and 5NS prefixes.
In 1997, Caterpillar added new dozer blades and made modifications to the undercarriage guards, beginning with 6SL02556, 7XL01108, and 9TS00218.
Also in 1997, modifications were made to the steering clutch brake lining material, beginning with 6SL02663, 7XL01247, 8DL00094, 9CL00867, and 9TS00273.
Many modifications were made in 1998. Caterpillar added a turnbuckle blade anti-pitch link, beginning with 4KS00409, 4TS00366, 5GS00283, 6SL02721, 7XL01308, and 9TS00312. It added joystick hold control, beginning with 4KS00602, 4TS00603, 5GS00439, and 7GS00230. Also, the planetary transmission three-planet carrier was replaced with a six-planet carrier, beginning with 6SL02767, 7XL01349, and 9TS00346. Caterpillar modified the steering clutch control valves, beginning with 6SL02827, 7XL01423, 8DL00111, 9CL00978, and 9TS00391.
The Caterpillar D3C III was replaced by the Caterpillar D3G.
Based on data from the sales database of Ritchie Bros. Auctioneers, it is estimated that more than 10,000 Caterpillar D3C Series III crawler tractors have been produced.
|Total = 10,036|