User manual ZENOAH KOMATSU PC78US-8 BROCHURE

[. . . ] Japan. PC78US-8 C O M P A C T H Y D R A U L I C E X C A V A T O R COMPACT HYDRAULIC EXCAVATOR PC78US-8 HORSEPOWER Gross: 42. 8 kW 57 HP @ 1950 rpm Net: 41 kW 55 HP @ 1950 rpm OPERATING WEIGHT 6945 ­ 7535 kg 15, 315 ­ 16, 615 lb WALK-AROUND Ecology and Economy Features Low emission engine A powerful, turbocharged and air-to-air aftercooled Komatsu SAA4D95LE-5 provides 41 kW 55 HP. This engine is EPA Interim Tier 4 and EU Stage 3A emissions certified without sacrificing power or machine productivity. Large Comfortable Cab · Low noise design cab · Sliding convex door facilitates easy entrance in confined areas. See page 6. Large TFT LCD Monitor · Easy-to-see and use 7" large multifunction color monitor · Can be displayed in 12 languages for global support. TFT : Thin Film Transistor LCD : Liquid Crystal Display BUCKET CAPACITY 0. 09 ­ 0. 34 m3 0. 12 ­ 0. 45 yd3 Low operation noise See page 4. Productivity Features Tight tail swing · Excellent operation in tight tail swing radius design Tail swing radius: 1240 mm 4'1" Mode selection · Five working modes designed to match engine speed, pump delivery and system pressure. [. . . ] Allows focus on operation in the green range with reduced CO2 emissions and efficient fuel consumption. Eco-gauge Low Operation Noise Enables low noise operation using the low-noise engine and methods to cut noise at source. Electronically controlled common rail type engine · Multi-staged injection Low noise design · Optimal arrangement of sound absorbing materials · Partition between the cab and engine room large drawbar pull and single pump with double flow, and it demonstrates superb maneuverability while operating at its optimum travel speed. It exhibits a large drawbar pull for moving on job sites, traveling in rough terrain and climbing steep slopes. Maximum drawbar pull: 66. 9 kN 6820 kgf 15050 lb Idling Caution Auto-decel Engine speed automatically slows down when all control levers are set in neutral to minimize fuel consumption. Photo may include optional equipment. To prevent unnecessary fuel consumption, an idling caution is displayed on the monitor, if the engine idles for 5 minutes or more. 5 4 PC78US-8 C O M P A C T H Y D R A U L I C E X C A V A T O R COMPACT HYDRAULIC EXCAVATOR PC78US-8 WORKING ENVIRONMENT Large Comfortable Cab Safety Features New Cab Design for Hydraulic Excavators The cab is designed specifically for hydraulic excavators and gains reinforced strength from the pipestructured cab framework. The cab framework provides the high durability and impact resistance with very high impact absorbency. The seat belt keeps the operator in the seat of the cab in the event of a roll over. Wide Visibility Large cab and extended front glass enable operator to get better visibility. Lock Lever When lock lever is placed in lock position all Photo : Rigid seat Retractable Seat Belt Easy-to-use retractable seat belt is employed. hydraulic controls (travel, swing, boom, arm, bucket and blade) are inoperable. Lever shown in lock position Multi-position Controls The multi-position, PPC (pressure proportional control) levers allow the operator to work in comfort while maintaining precise control. A double-slide mechanism allows the seat and controllers to move together or independently, allowing the operator to position the seat and controllers for maximum productivity and comfort. Large Cab Large cab provides ample operation space. The cab has wide doorway for easy access. Automatic Air Conditioner Automatic air conditioner is utilized. The bi-level control function keeps the operator's head and feet cool and warm respectively. This improved air flow function keeps the inside of the cab comfortable throughout the year. Defroster function keeps cab glass clear. Emergency Escape Hammer The cab is equipped with an emergency escape hammer for Thermal and Fan Guards Thermal and fan guards are placed around high-temperature parts of the engine and fan drive. Side-view and Rear-view Mirrors Large side mirror and rear mirror allow the PC78US-8 to meet the new ISO visibility requirements. breaking the rear window glass in case of an emergency. Skylight Skylight with window can be opened for overhead visibility. Low Cab Noise Cab is highly rigid and has excellent sound absorption ability. Thorough improvement of noise source reduction and use of low noise engine, hydraulic equipment, and air conditioner allows this machine to generate a low level of noise. Photo : Rigid seat Sliding Convex Door The sliding convex door facilitates easy entrance in confined areas. Travel Alarm Pump/engine Room Partition Pump/engine room partition prevents oil from spraying onto the engine if a hydraulic hose should burst. An alarm is installed as standard equipment to give other workers a warning when the machine travels in forward or reverse. 7 6 PC78US-8 C O M P A C T H Y D R A U L I C E X C A V A T O R COMPACT HYDRAULIC EXCAVATOR PC78US-8 MAINTENANCE FEATURES Easy Maintenance Komatsu designed the PC78US-8 to have easy service access. By doing so, routine maintenance and servicing are less likely to be skipped, which can mean a reduction in costly downtime later on. Here are some of the many service features found on the PC78US-8. 1 2 3 Large TFT LCD Monitor Large Multi-lingual LCD Monitor A large user-friendly color monitor enables safe, accurate and smooth work. Improved screen visibility is achieved by the use of TFT liquid crystal display that can easily be read at various angles and lighting conditions. [. . . ] Shoes mm in 450 17. 7" 600 23. 6" 450 17. 7" 600 23. 6" Operating Weight kg lb 7365 16, 240 7535 16, 615 6945 15, 315 7115 15, 690 Ground Pressure kPa kg/cm2 psi 33. 0 0. 34 4. 83 25. 3 0. 26 3. 70 31. 1 0. 32 4. 51 23. 9 0. 24 3. 47 BACKHOE BUCKET AND ARM COMBINATION Bucket Capacity (heaped) SAE, PCSA 0. 09 m3 0. 12 yd3 0. 12 m3 0. 16 yd3 0. 20 m3 0. 26 yd3 0. 28 m3 0. 37 yd3 0. 34 m3 0. 45 yd3 --General digging CECE 0. 08 m3 0. 10 yd3 0. 11 m3 0. 14 yd3 0. 18 m3 0. 24 yd3 0. 25 m3 0. 33 yd3 0. 30 m3 0. 39 yd3 Without Side Cutters 350 mm 14" 450 mm 18" 550 mm 22" 650 mm 26" 755 mm 29. 7" Width With Side Cutters 450 mm 18" 550 mm 22" 650 mm 26" 750 mm 30" NA X-- Not available Weight 145 kg 320 lb 160 kg 355 lb 185 kg 410 lb 210 kg 465 lb 210 kg 465 lb Number of Teeth 3 3 3 4 4 X X Arm Length 1650 mm 2250 mm 5'5" 7'5" Hydraulic cylinders: (Number of cylinders ­ bore x stroke x rod diameter) Boom . 1­115 mm x 858 mm x 65 mm 4. 5" x 33. 8" x 2. 6" Arm . 1­100 mm x 861 mm x 60 mm 3. 9" x 33. 9" x 2. 4" Bucket . 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