User manual ZENOAH KOMATSU D275A-5R BROCHURE

[. . . ] See page 9. Low-drive, long-track, seven roller undercarriage ensures outstanding grading ability and stability. Track shoe slip control system (option) See page 7. K-Bogie undercarriage system improves traction, component durability, and operator comfort. See page 6. Photo may include optional equipment. 2 3 D275A-5R C R AW L E R D O Z E R CRAWLER DOZER D275A-5R PALM COMMAND CONTROL SYSTEM (PCCS) Komatsu's ergonomically designed control system "PCCS" creates an operating environment with Power Train Electronic Control System Smooth and soft operation D275A-5R utilizes a newly designed power train electronic control system. The controller registers the amount of operator control (movements of lever and operation of switches) along with machine condition signals from each sensor, to calculate accurately the control of the transmission, steering clutches and brakes for optimal machine operation. The ease of operation and productivity of new D275A-5R is greatly improved through these new features. "complete operator control" . Human-machine Interface Palm command electronic controlled travel control joystick Palm command travel joystick provides the operator with a relaxed posture and superb fine control. [. . . ] Repair costs are significantly lowered and undercarriage life is prolonged with the reduction in track shoe slippage. Track shoe slip control panel The track shoe slip control system will contribute to lower fuel costs, because the engine output is automatically controlled to optimum levels for operation. Hydraulic drive radiator cooling fan Fan rotation is automatically controlled depending on coolant and hydraulic oil temperature, saving fuel consumption and providing great productivity with a quiet operating environment. Fulcrum of major bogie Radiator Fan drive hydraulic motor Coolant temperature sensor Hydraulic pump Controller Power train oil temperature sensor Fulcrum of minor bogie 6 7 Photo may include optional equipment. D275A-5R C R AW L E R D O Z E R CRAWLER DOZER D275A-5R WORKING ENVIRONMENT Operator Comfort Operator comfort is essential for productive work. The D275A-5R provides a quiet, comfortable environment where the operator can concentrate on the work at hand. MAINTENANCE Preventative Maintenance Preventative maintenance is the only way to ensure long service life from your equipment. That's why Komatsu designed the D275A-5R with conveniently located maintenance points to make necessary inspections and maintenance quick and easy. Comfortable ride with new cab damper mounting and K-Bogie undercarriage D275A-5R's cab mount uses a new cab damper which provides excellent shock and vibration absorption capacity with its long stroke. Fore and aft sliding rails and suspension spring are reinforced and play of joints is reduced. In addition to turning function for ripper operation, the seat is also tiltable to facilitate down hill dozing. Air suspension seat is also available. Electric priming pump Simply pressing the button enables bleeding air from the fuel circuit at the time of filter replacement, etc. Enclosed hydraulic piping Hydraulic piping for the blade tilt cylinder is completely housed in the push arm, ensuring damage protection from materials. Modular power train design Power train components are sealed in a modular design that allows the components to be dismounted and mounted without oil spillage. Wide link tread Photo may include optional equipment. Low Maintenance Costs New Track Link Design New D275A-5R track links feature increased link tread and link height and track guiding guard shape is improved. The result is improved undercarriage life and reduced cost through maintenance man-hours when turning pins and bushings. Track guiding guard 8 9 High link height D275A-5R C R AW L E R D O Z E R CRAWLER DOZER D275A-5R RELIABILITY FEATURES Filtration Engine Newly added main fuel filter of 2µ and water separator protect the engine against dirt and water in the fuel. SPECIFICATIONS ENGINE 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. PCCS lever, joystick controlled wet multiple-disc steering clutches, hydraulically loaded and hydraulically released. Wet multiple-disc, pedal/lever controlled steering brakes are spring loaded hydraulically released and require no adjustment. Steering clutches and brakes are interconnected for easy, responsive steering. 4-cycle, water-cooled, direct injection Aspiration . Turbocharged, air-to-air aftercooled Number of cylinders . 140 mm x 165 mm 5. 51" x 6. 50" Piston displacement. All-speed, electronic Horsepower SAE J1995 . Gross 337 kW 452 HP ISO 9249 / SAE J1349* . Full-flow *Net horsepower at the maximum speed of radiator cooling fan . 306 kW 410 HP Hydraulic The hydraulic tank is equipped with a high-filtration breather with pressure valve to prevent dust from entering. UNDERCARRIAGE Suspension . [. . . ] 2495 mm 8'2" Maximum lift above ground . 955 mm 3'2" Maximum digging depth . 900 mm 2'11" Variable giant ripper: Variable, parallelogram single-shank ripper ideal for ripping up tough material. Ripping depth is adjustable in three stages by a hydraulically controlled pin puller. [. . . ]