Komatsu D37-23 and D39-23 crawler dozers have been upgraded with Tier 4-Interim SAA4D95LE-6 diesels.
Komatsu D37-23 and D39-23 crawler dozers have been upgraded with Tier 4-Interim SAA4D95LE-6 diesels that cut fuel consumption by up to 10 percent over predecessor models while retaining the same horsepower ratings: 89 and 105 horsepower, respectively, at 2,200 rpm. Operating weights range from 18,386 to 21,363 pounds, depending on configuration and model. Long track EX and low-ground-pressure PX models are available. A variable-flow turbocharger, direct-flow air filter, high-pressure common rail fuel injection, and exhaust gas recirculation (EGR) result in precise air flow management and more complete combustion, eliminating the need for a DPF, Komatsu says. Forward cab design and a steeply sloped hood provide more room for operators and move them closer to the blade than in predecessor machines. A newly designed PAT blade has standard adjustable blade pitch that allows the operator to adjust the aggressiveness of the cutting edge. Komatsu’s ergonomically designed Palm Command Control System (PCCS) gives operators maximum control, and thumb push buttons simplify transmission speed setting shifts which are indicated graphically on the monitor.
The 1050K crawler dozer has a base weight around 95,000 pounds and a 350-horsepower PowerTech Tier 4-Final diesel.
Models 750K and 850K crawler dozers have been upgraded with a PowerTech 6.8-liter Tier 4-Final diesels with 165 and 205 horsepower, respectively.
Komatsu PC290LC-11 replaces the Dash-10 version. It is Tier 4-Final certified with a 196-horsepower Komatsu SAS6D107E-3 engine
The D155AX-8 crawler dozer has an operating weight of 89,300 pounds and is powered by a 354-horsepower Komatsu SAA6D140E-7 diesel