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D375A-8
Strength and performance
- Horsepower: 609 HP @ 1,800 rpm
- Operating weight: 163,340 lbs.
- Blade capacity: 24.2 - 28.8 yd3
Specifications
Coolant and Lubricant Capacity refill
| Fuel tank | 317.0 US gal |
| Coolant | 41.5 US gal |
| Engine | 21.1 US gal |
| Torque converter, transmission, bevel gear, and steering system | 39.6 US gal |
| Final drive (Each side) | 16.1 US gal |
Engine
| Model | Komatsu SAA6D170E-7 |
| Type | 4-cycle, water-cooled, direct injection |
| Aspiration | Turbocharged, air-to-air charge air cooler, cooled EGR |
| Number of cylinders | 6 |
| Bore x stroke | 6.69 x 6.69 in |
| Piston displacement | 1,413 in³ |
| Governor | Mid-range, electronic |
| Horsepower: | |
| SAE J1995 - Gross | |
| Forward | 636 HP |
| Reverse | 775 HP |
| ISO 9249 / SAE J1349* - Net | |
| Forward | 609 HP |
| Reverse | 748 HP |
| Rated rpm | 1,800 rpm |
| Fan drive type | Hydraulic |
| Lubrication system: | |
| Method | Gear pump, force lubrication |
| Filter | Full-flow |
| *Net horsepower at the maximum speed of radiator cooling fan: | |
| Forward | 580 HP |
| Reverse | 719 HP |
U.S. EPA Tier 4 Final emission certified.
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 teeth are bolt-on for easy replacement.
Hydraulic System
Hydraulic control unit:
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 96.7 US gal/min 366 L/min for implement at rated engine rpm.
| Relief valve setting (for implement) | 4,322 psi | |
| Control valves: | ||
| Spool control valve for Semi-U tilt dozer and U tilt dozer. | ||
| Blade lift | Raise, hold, lower, and float | |
| Blade tilt | Right, hold, and left | |
| Additional control valve required for variable digging angle multi-shank ripper and giant ripper. | ||
| Ripper lift | Raise, hold, and lower | |
| Ripper tilt | Increase, hold, and decrease | |
| Hydraulic cylinders: Double-acting, piston | Number of cylinders: | Bore: |
| Blade lift | 2 | 5.5 in |
| Blade Tilt (Single tilt) | 1 | 7.9 in |
| Blade Tilt (Dual tilt) | 2 | 7.9 in |
| Ripper lift | 2 | 7.9 in |
| Ripper tilt | 2 | 7.1 in |
| Hydraulic oil capacity (Refill): | ||
| Semi-U dozer or U dozer | 34.3 US gal | |
| Ripper equipment (Additional volume): | ||
| Giant ripper | 11.9 US gal | |
| Multi-shank ripper (variable) | 11.9 US gal |
Operating Weight
| Tractor weight Including rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment. | 124,210 lbs. |
| Operating weight Including strengthened dual tilt Semi-U dozer blade, giant ripper, 24" extreme service shoes, cab, ROPS (ISO 3471), operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank.Including Semi-U tilt dozer, giant ripper, cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank. | 161,840 lbs. |
| Ground pressure | 21.5 psi |
Steering System
Palm Command Control System (PCCS), joystick controlled, wet multiple-disc steering clutches are spring-loaded and hydraulically released. Wet multiple-disc, pedal/lever controlled steering brakes are spring-actuated hydraulically released and require no adjustment. Steering clutches and brakes are interconnected for easy, responsive steering.
| Minimum turning radius | 13 ft. 9 in |
TORQFLOW Transmission
Komatsu TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 1-phase torque converter with lockup clutch and a planetary gear, multiple-disc clutch transmission which is hydraulically actuated and force-lubricated for optimum heat dissipation. Gearshift lock lever and neutral safety switch prevent accidental starts.
| Gear | Forward | Reverse |
| 1st | 2.2 mph | 2.9 mph |
| 2nd | 4.2 mph | 5.5 mph |
| 3rd L | 5.0 mph | 6.0 mph |
| 3rd | 7.3 mph | 9.8 mph |
Undercarriage
| Suspension | Oscillating equalizer bar with shoulder pad and pivot shaft | |
| Track roller frame | Cylindrical, high-tensile-strength steel construction | |
| Rollers and idlers | Lubricated track rollers | |
| Komatsu Bogie (K-Bogie) undercarriage: | Lubricated track rollers are resiliently mounted to the track frame with a bogie suspension system whose oscillating motion is cushioned by rubber pads. | |
| Extreme service track shoes: | Lubricated tracks. Unique seals prevent entry of foreign abrasives into pin to bushing clearances to provide extended service life. Track tension is easily adjusted with grease gun. | |
| Number of shoes (Each side) | 41 | |
| Grouser height (Single grouser) | 3.7 in | |
| Shoe width (Standard) | 24 in | |
| Ground contact area | 7,527 in² | |
| Ground pressure (Tractor) | 16.4 psi | |
| Number of track rollers | 8 | |
| Number of carrier rollers | 2 | |
| Extreme service shoes: | Ground contact area: | Ground** pressure: |
| 24 in Additional weight: 0 lbs. | 7,527 in² | 21.5 psi |
| 28 in Additional weight: 1,500 lbs. | 8,760 in² | 18.6 psi |
| 32 in Additional weight: 3,000 lbs. | 9,994 in² | 16.5 psi |
** Ground pressure based on tractor, strengthened dual tilt Semi-U dozer blade, giant ripper, cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank.
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