The current D11T was introduced in early 2008 and is also 850 hp (630 kW). This comes as a regular bulldozer and a carrydozer like the previous model. As with the D11R, the D11T Carrydozer can push 57.9 yards (52.9 m) while the regular D11T can push 45 yards (41 m) of earth. A new D11T was on display at the Caterpillar display at Minexpo during the 22 to 24 September 2008 expo in Las Vegas, Nevada.
The D11T and D11T CD are both powered by the CAT C32 engine with ACERT technology.[1] The D11R and the D11T also differ in the configuration and layout of their operator controls. Several levers have been changed into electronic switches, and several controls have been moved for increased visibility. Another difference is that the D11T has its exhaust mufflers moved back closer to the front of the cab like the D10T. They stand taller than the ones on the D11N/D11R.
In November of 2018 - a number of enhancements were introduced and announced for the current D11T/D11T CD machines.
D11s are primarily used for moving large quantities of material (dirt, rock, aggregate, soil etc.) short distances in relatively confined places. For example, they are often used in quarries. The D11 is most commonly found in use in large scale forestry, mining, and quarry operations.
D11s can be adapted for agricultural and rock ripping by fitting a ripper, a long claw-like device on the back of the tractor. Rippers can come singly (single shank) or in groups of two or more (multi shank rippers). Usually, a single shank is preferred for heavy ripping.
Ripping rock allows the ground surface rock to be broken into small, easy to handle and transport rubble which can then be removed so that grading can take place.
Agricultural ripping allows rocky or very hard earth to be broken up so that otherwise unarable land can be used for agriculture. For example, much of the best land in the California wine country consists of old lava flows. Ripping shatters the igneous rock, allowing the growth of wine grapes. Hard earth can also be ripped and decompacted to allow the planting of orchards which otherwise could not grow on the land.