Komatsu upgraded the HD785-5 rigid-frame off-highway truck to “dash-7” status with the arrival of its Tier-2 engine — the 1,178-hp Komatsu SAA12V140E-3.
Komatsu upgraded the HD785-5 rigid-frame off-highway truck to “dash-7” status with the arrival of its Tier-2 engine — the 1,178-hp Komatsu SAA12V140E-3. The HD785-7 truck not only picked up 137 horsepower (a 13-percent improvement), but it also gained a new Komatsu-designed, seven-speed transmission with an additional reverse gear for low speeds and electronically controlled clutch modulation to manage optimum clutch-engagement oil pressure at every gear for smoother shifting with minimal torque shock. Komatsu replaced the dry-disk front brakes with wet-disk retarders similar to those on the rear wheel ends. The trucks will be produced at the Peoria, Ill., plant by February.
