The Caterpillar D9 is a large track-type tractor designed and manufactured by Caterpillar Inc. It is usually sold as a bulldozer equipped with a detachable large blade and a rear ripper attachment.
Caterpillar D9T
Introduced in 1974, the 410 hp (310 kW) D9H was the last D9 with conventional track drive
CAT D9L, the first D9 model to employ Caterpillar's "high drive" configuration, which raises the drive sprocket, resulting in elevated ground clearance and a triangular track.
The 370 hp (280 kW) D9N replaced D8L in 1987
The Caterpillar D10 is a bulldozer originally manufactured by Caterpillar between 1977 and 1987, when it was superseded by the D11; the successor of the smaller D9L was then rebranded as the D10N, whi
Caterpillar D9
…in company history. The DD9H and the SxS D9H soon followed. In 1980, the 460 hp (340 kW) D9L was introduced. The unit featured the same new type of elevated drive sprocket undercarriage as had been introduced on the larger D10 in 1977. The new undercarriage design reduced strain and shock loads on the final drives and…
CAT D10N at work in Rishon LeZion, Israel