User manual ZENOAH KOMATSU D155A-5 BROCHURE

[. . . ] When the operator wants to move the machine forward and to the left, he simply moves the joystick forward and to the left. The machine responds to the movement of the lever, providing the operator with feeling of natural control with Komatsu joystick. Electronic Monitor Panel An electronic monitoring system prevents minor problems from developing into major ones. All meters and gauges are controlled by a microcomputer, which provides a wide indication range for easier, more precise reading. Electrical Charge Lamp Engine Air Intake Pre-heat Lamp Engine Coolant Temperature Caution Lamp Engine Coolant Temperature Gauge Engine Oil Pressure Caution Lamp Fuel Gauge Service Meter Monitor Caution Cancel Switch Monitor Caution Lamp Transmission Oil Temperature Gauge Low-Noise Design The engine, power train components, and control valves are rubber-mounted to the frame. [. . . ] This X-bogie and rubber cushion provide different absorption characteristics, depending on the ground surface. When the machine travels on flat ground, the REU functions as a conventional rigid undercarriage. When the machine travels on uneven ground, the REU maximizes the suspension effect. The Komatsu REU system improves traction, component durability, and operator comfort. Flexibility Flexibly grasps ground surface due to Komatsu's unique trackroller design for more and better ground contact. Independent X-bogies and rubber pads (cushions) are incorporated into the track rollers. Powerful Drawbar Pull for All Kinds of Terrain The X-bogie and rubber pad provide different suspension characteristics depending on the ground surface. On uneven terrain, the REU maximizes the suspension effect the shoes always follow the contour of the ground, ensuring a greater actual ground contact for greatly-improved drawbar pull. On flat ground Track frame Conventional Undercarriage There is minimal shoe slippage with the conventional low drive type undercarriage. The shoe slip limit has been substantially raised due to long tracks and large ground contact area. The large traction force thus obtained, in combination with high engine power, results in superb drawbar pull. With the low center of gravity, dynamic stability is excellent. Functions as a conventional rigid undercarriage. Ensures almost the same traction force as a conventional rigid undercarriage. On uneven ground Seesaw movement is performed corresponding to ground surface. Compared with a rigid type, the actual ground contact area increases and powerful drawbar pull is ensured because the track shoes follow the contour of the ground. Large deformation of the rubber pads contributes to greater suspension effect. Comfortable Ride on Uneven Ground Outer bogie Rubber pad Inner bogie Minimum Shock in Riding Over Obstacles Fall height A Conventional rigid type Suspension effect 4 1 Flat ground travel Rough terrain travel B A REU Obstacle height B Center Shaft: Fixed to track frame On uneven ground, the rubber pad provides four times the suspension effect. When riding over obstacles, the height of the machine fall is low. Track roller Frame Flat Bottom Frame The pivot shafts and monocoque frames prevent mud buildup. The design facilitates good maneuverability in muddy conditions and reduces the chance of hanging up on stumps or boulders. 6 7 D155A-5 CRAWLER DOZER ENGINE ENGINE Engine AND AND TORQUE CONVERTER TORQUE CONVERTER Fuel Efficient Engine The field-proven, rugged reliable Komatsu 225 kW 302 HP SA6D140E-2 provides high torque for efficient dozing power and high reliability and low fuel consumption. SPECIFICATIONS SPECIFICATIONS ENGINE Komatsu SA6D140E-2, water-cooled, 4-cycle, turbocharged and aftercooled, diesel engine, 6 cylinders with 140 mm 5. 51" bore x 165 mm 6. 50" stroke and 15. 24 ltr 930 in3 piston displacement. 160 kg·m 1, 157 lb/ft @ 1250 rpm * Net flywheel horsepower output for standard engine (SAE J1349) including air cleaner, alternator (not charging), water pump, lubricating oil pump, fuel pump, muffler, and fan. STEERING Joystick controls for all directional movements. Pushing the lever forward results in the machine forwarding, while pulling it toward the operator reverses the machine. Wet, multiple-disc, pedal-controlled service brakes are springactuated and hydraulically released. 3. 7 m 12'2" (As measured by track marks on ground. ) Modular Power Train Components Modular design has facilitated removal/ installation of power train components, shortening machine downtime. Wet, Multiple-Disc Brakes Automatic Preheating Mechanism The best preheating times is set automatically by sensing ambient temperature. Eliminate brake adjustments for maintenance-free operation. Direct-injection fuel system. Dual element, dry-type air filters with automatic dust ejector and dust indicator. Oscillation-type with equalizer bar and forward mounted pivot shafts Track roller frame . [. . . ] Hydraulic control unit: All spool control valves externally mounted beside the hydraulic tank. Gear-type hydraulic pump with capacity (discharge flow) of 255 ltr 67. 4 U. S. 20. 6 MPa 210 kg/cm2 2, 990 psi Control valves: Spool control valve for Semi-U tilt dozer and Full-U tilt dozer. [. . . ]