User manual ZENOAH KOMATSU D275A-5 BROCHURE

[. . . ] See page 6 Spacious interior Comfortable ride with new cab damper and K-bogie undercarriage Excellent visibility High capacity air conditioning system (optional) PCCS (Palm Command Control System) lever Pressurized cab (optional) Adjustable armrest Travel control console integrated with operator seat 306 kW 410 HP turbocharged, aftercooled engine provides ample power. See page 6. Preventative Maintenance Centralized Service Station Enclosed Hydraulic Piping Modular Power Train Design Oil Pressure Checking Ports See page 9. ECMV (Electronic Controlled Modulation Valve) controlled steering clutches/brakes facilitating steering operation. See page 5. Simple Hull Frame and monocoque track frame with pivot shaft for greater reliability. Rippers (option) : Photo may include optional equipment Large Blade Capacities: 13. 7 17. 9 (Semi-U dozer) and 16. 6 m3 21. 7 yd3 (U dozer) m3 yd3 New Track Link Design Track link height and link tread width are increased, providing extended wear life. See page 9. Low-drive, long-track, seven roller undercarriage ensures outstanding gradeability and stability. K-Bogie Undercarriage System improves traction, component durability, and operator comfort. [. . . ] Facing Front Outline of Electronic Control System UP Heavy Load MANUAL MODE (F1-R1) Press DOWN switch Press UP switch Light Load Auto shift down switch Switch Fuel control dial Travel control lever DOWN F1-R2 MODE Press DOWN switch Press UP switch F2-R2 MODE Monitor panel MONITOR SYSTEM Deceleration pedal Auto Downshift Function Controller monitors engine speed, travel gear and travel speed. Pitch angle sensor Brake pedal potentiometer When Turned 15° Engine controller Transmission controller Transmission control Steering controller When load is applied and machine travel speed is reduced, the controller automatically downshifts to optimize gear speed to provide high fuel efficiency. This function provides comfortable operation and high productivity without manual downshifting. (This function can be deactivated with cancel switch. ) Actuated on Heavy Load or Steep Slope Transmission control valve ECMV ECMV ECMV ECMV Engine speed Water Engine temp. oil pressure Fuel control valve unit Auxilliary valve Engine Torque converter Electronic controlled transmission Transmission output speed Electronic sensor 4 controlled steering/brake system ECMV ECMV ECMV ECMV 5 PRODUCTIVITY PRODUCTIVITY FEATURES FEATURES Engine The Komatsu SDA6D140E engine delivers 306 kW 410 HP at 2000 rpm. The fuel-efficient Komatsu engine, together with the heavy machine weight, make the D275A-5 a superior crawler dozer in both ripping and dozing production. The engine is designed to surpass EPA/CARB Tier II, EU and Japan regulations, and features direct fuel injection, turbocharger, and aftercooler to maximize fuel efficiency. To minimize noise and vibration, the engine is mounted to the main frame with rubber cushions. The idler does not oscillate under load, providing excellent machine balance. Blade and ripper penetration force remains stable for increased productivity. New features on K-Bogie Undercarriage System: K-bogies oscillate with two fulcrums, and track roller vertical travel is greatly increased. Impact loading on all undercarriage components has been reduced and durability of components is improved since track rollers are Fan drive hydraulic motor Coolant temperature sensor Hydraulic pump Controller D275A-5 CRAWLER DOZER Large Blade Capacities of 13. 7 m3 17. 9 yd3 (Semi-U dozer) and 16. 6 m3 21. 7 yd3 (U dozer) yield outstanding production. High-tensile-strength steel has been incorporated into the front and sides of the blade for increased durability. Undercarriage K-Bogie System New K-Bogie Undercarriage System retains prior advantages, with new additional features. Dual Tilt Dozer (option) The dual tilt dozer increases productivity while reducing operator effort. Optimum blade cutting angle for all types of materials and grades can be selected on-the-go for increased load and production. Digging, dozing (carry), and dumping (spreading) are easy and smooth with less operator fatigue. Air filters and a higher internal air pressure combine to prevent dust from entering the cab. Silicon oil Spring on the display, check-before-starting and caution items Cab Damper Mounting appear on the right lower part of the panel. The monitor finds abnormalities, corresponding warning light blinks and a warning buzzer sounds. The monitor displays engine rpm and forward/reverse gear speed on the upper part of the monitor during operation. When abnormalities occur during operation, user code and service meter are displayed alternately. When a high importance user code is displayed, the caution light blinks and a warning buzzer sounds to prevent the development of serious problems. Gull-wing Engine Side Covers (optional) The opening area is further enlarged when gull-wing engine side covers are opened, facilitating engine maintenance and filter replacement. Side covers have been changed to a thick one-piece structure with a bolt-on catch to improve durability. New suspension seat D275A-5 uses a newly designed suspension seat. Fore and aft sliding rails and suspension spring have been newly designed to increase strength and rigidity, reducing movement of seat components. Fore and aft seat travel has been designed for all operator sizes. Enclosed Hydraulic Piping Hydraulic piping for the blade tilt cylinder is completely housed in the push arm, ensuring damage protection from materials. [. . . ] 27. 5 MPa 280 kg/cm2 3, 980 psi Control valves: Spool control valves for Semi-U tilt dozer and Full-U tilt dozer Positions: Blade lift . Right, hold, and left Additional control valve required for variable digging angle multishank ripper and giant ripper. Increase, hold, and decrease Hydraulic oil capacity (refill): Semi-U tilt dozer . Double-acting, piston Number of cylinders 2 1 2 2 Bore 120 mm 4. 72" 180 mm 7. 09" 180 mm 7. 09" 160 mm 6. 30" 60 500 50 F1 50 400 40 F2 DRAWBAR PULL vs. [. . . ]