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Komatsu Dozer D85EX-15

 Komatsu Dozer D85EX-15
D85EX-15
Hydrostatic steering makes the D85EX-15 very maneuverable for such a large, powerful dozer. Palm command controls for travel and equipment give the operator the precise control of a small dozer with the pushing power of a high production dozer.

Engine
Model Komatsu SAA6D125E-5
Type 4-cycle, water-cooled, direct injection
Aspiration 100 in³ Turbocharged, air-to-air aftercooled, cooled EGR
Number of cylinders 6
Bore x stroke 4.92" x 5.9" 125 mm x 150 mm
Piston displacement 674 in³ 11.04 ltr
Governor All-speed, electronic
Horsepower:
SAE J1995 / Gross 266 HP 199 kW
ISO 9249 / SAE J1349* / Net 240HP 179 kW
Hydraulic fan at maximum speed / Net 240 HP 179 kW
Rated rpm 1900 rpm
Fan drive type Hydraulic
Lubrication system:
Method Gear pump, force lubrication
Filter Full-flow
EPA Tier 3 and EU stage 3A emissions certified.
TORQFLOW Transmission
Komatsu TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 1-phase, torque converter and a planetary gear, multiple-disc clutch transmission which is hydraulically-actuated and force-lubricated for optimum heat dissipation. Gearshift lock lever and neutral switch helps prevent accidental starts.
Travel speed: Forward: Reverse:
1st 2.1 mph
3.3 km/h
2.7 mph
4.4 km/h
2nd 3.8 mph 6.1 km/h 5.0 mph 8.0 km/h
3rd 6.3 mph 10.1 km/h 8.1 mph 13.0 km/h
Final Drive
Double-reduction final drive of spur and planetary gear sets to increase tractive effort and reduce gear tooth stresses for long final drive life. Segmented sprocket rims are bolt-on for easy replacement.
Steering 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 left to make a left turn.Hydrostatic Steering System (HSS) is powered by steering planetary units and an independent hydraulic pump and motor. Counterrotation turns are also available. Wet, multiple-disc, pedal-controlled service brakes are spring-actuated and hydraulically released. Gear shift lock lever also applies parking brake.
Minimum turning radius 6'6" 1.99 m
Undercarriage
Suspension Oscillating equalizer bar and pivot shaft
Track roller frame Monocoque, large section, durable construction
Rollers and idlers Lubricated track rollers
Track shoes Lubricated tracks. Unique seals prevent entry of foreign abrasive material into pin to bushing clearances to provide extended service life. Track tension is easily adjusted with grease gun.
Number of track rollers (each side) 7
Type of shoes (standard) Single grouser
Number of shoes (each side) 41
Grouser height 2.8" 72 mm
Shoe width (standard) 22" 560 mm
Ground contact area 5295 in² 34160 cm²
Ground pressure(with dozer, cab and ROPS) 10.7 psi 0.75 kg/cm² / 73.6 kPa
Track gauge 6'7" 2000 mm
Length of track on ground 10' 3050 mm
Coolant and Lubricant Capacity (refill)
Fuel tank 129 U.S. gal 490 ltr
Coolant 15.3 U.S. gal 58 ltr
Engine 10.0 U.S. gal 38 ltr
Torque converter, transmission, bevel gear, and steering system 15.9 U.S. gal 60 ltr
Final drive (each side) 6.9 U.S. gal 26 ltr
Operating Weight
Tractor weight:
Including rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment. 46,780 lb 21220 kg
Operating weight:
Including Semi-U tilt dozer or straight tilt dozer, multi-shank ripper, steel cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank. 61,950 lb 28100 kg
Hydraulic System
Closed-center load sensing system (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.
Hydraulic control units: 2 x axial piston motors
All spool valves externally mounted beside the hydraulic tank. Plunger type hydraulic pump with capacity (discharge flow) of 195 ltr/min 51.5 U.S. gal/min at rated engine rpm.
Relief valve setting 3,270 psi 22.6 MPa230 kg/cm²
Control valves:
Spool control valves for tilt dozer:
Blade lift Raise, hold, lower, and float
Blade tilt Right, hold, and left
Additional control valve required for multi-shank ripper:
Ripper lift Raise, hold, and lower
Hydraulic cylinders Double-acting, piston
Number of cylinders: Bore Bore
Blade lift / 2 3.9" 100 mm
Blade tilt / 1 5.9" 150 mm
Ripper lift / 2 5.1" 130 mm
Hydraulic oil capacity (refill):
Straight tilt dozer 17.7 U.S. gal 67 ltr
Semi-U tilt dozer 17.7 U.S. gal 67 ltr
Ripper equipment (additional volume):
Multi-shank ripper 2.9 U.S. gal 11 ltr

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