Komatsu's automatic TORQFLOW transmission consists
of a water-cooled, 3-element, 1-stage, 2-phase, torque
converter with lockup clutch, and a planetary gear, multipledisc
clutch transmission which is hydraulically actuated and
force-lubricated for optimum heat dissipation. Equipped with
gearshift lock lever and neutral start switch.
Double-reduction, spur and planetary final drives increase
tractive effort. Segmented sprockets are bolt-on for easy inthe-
Palm Command Control System (PCCS) lever controls for all
directional movements. Pushing the PCCS lever forward results
in forward machine travel, while pulling it rearward reverses the
machine. Simply tilt the PCCS lever to the left to make a left
turn. Tilt it to the right for a right turn.
Hydrostatic Steering System (HSS) is powered by steering
planetary units and an independent hydraulic pump and motor.
Counter-rotation turns are also available. Wet, multiple-disc,
pedal-controlled service brakes are spring-actuated and
hydraulically released. Gearshift lock lever also applies parking
Lubricated track rollers are resiliently mounted on the track
frame with a bogie suspension system whose oscillating
motion is cushioned by rubber pads.
Lubricated tracks. Unique dust seals for preventing entry of
foreign abrasives into pin-to-bushing clearance for extended
service. Track tension easily adjusted with grease gun.
Including rated capacity of lubricant, coolant, full fuel tank,
operator and standard equipment.
Including strengthened SIGMADOZER®, giant ripper,
ROPS cab, operator, standard equipment, rated capacity of
lubricant, coolant, and full fuel tank.
Closed-center load sensing system (CLSS) designed for precise
and responsive control, and for efficient simultaneous operation.
Hydraulic control unit:
All spool control valves externally mounted beside the hydraulic
tank. Variable piston pump with capacity (discharge flow) of
325 ltr/min 85.9 U.S. gal/min for steering and 180 ltr/min
47.6 U.S. gal/min for implemented at rated engine rpm.
Relief valve setting
. . . for implement 27.5 MPa 280 kg/cm² 3,980 psi
. . . for steering 38.2 MPa 390 kg/cm² 5,550 psi