Komatsu America’s new GD655-5 motor
grader, equipped with a U.S. EPA Tier 3
emission-certified Komatsu SAA6D107E-1
diesel providing 9% more power (218 hp),
weighs 35,351 lb in standard configuration.
According to the company, a completely
new power train design positions the
engine at the rear of the machine, which,
along with increased weight on the front
axle, provides better control. The diesel
engine’s three-stage 2-Mode system allows
the operator to select either an economy
mode or a power mode, depending on the
work application, with three levels of power
from gear one through gear eight, providing
more productivity with a 20% fuel consumption
savings when compared with the
previous model. The new dual-mode power
shift transmission, designed and built
specifically for Komatsu graders, provides a
lockup torque converter mode as well as a
direct drive mode. An anti-stall feature for
direct drive allows the transmission to shift
to torque converter mode before the grader
stalls in a low speed application, thus
allowing better operator control.
A new hexangular-shaped cab eliminates
the front corner pillars for greater
visibility, and includes tinted windows with
intermittent wiper/washers on all glass. Air
conditioner/heater, electric rear window
defrost, 12-volt power port, radio, lunch
box holder, cup holder and coat hook are
all standard. The console-mounted
hydraulic controls are arranged in an
industry standard pattern on each side of
the steering wheel, with Komatsudesigned
control valves built specifically
for graders. A color monitor allows the
operator to check current machine functions.
Large service doors open wide for
easy access to service points and daily routine
maintenance. Refueling can be easily
done from the ground. In addition, a new
hydraulic driven reversible fan saves power
and reduces noise, and when working in
dusty conditions can be reversed to clear
the radiator.
www.komatsuamerica.com
As featured in Womp 2010 Vol 05 - www.womp-int.com
