User manual ZENOAH KOMATSU PC138US-8 BROCHURE

[. . . ] · The machine travel speed changes automatically to Hi or Lo at optimal points according to the travel load. See page 5. Photo may include optional equipment. Larger Comfortable Cab · Low noise cab design with viscous cab mounting · Sliding convex door facilitates easy entrance in confined areas. · Large cab improves working space. See page 8. Easy Maintenance · Long replacement interval of hydraulic oil and hydraulic filter · Remote mounted engine oil filter and fuel drain valve for easy access · Equipped with the fuel pre-filter as standard (with water separator) · Side-by-side cooling function enables only the cooling unit to be attached and detached. [. . . ] digging depth 5480 mm 18'0" 144mm 5. 7'' Protrusion from the track (handrail) Roadwork When performing roadwork, protrusion of the machine into the unoccupied lane is kept minimal since the rear portion of the upper structure protrudes slightly from the track at swing. This allows a dump truck to be positioned closer to the track of the machine. The operator is able to load materials efficiently onto the front of the dump body at ease since ample dumping reach is assured for the loading. Large working space is not required for the machine. Logging and forest roadwork Since the protrusion of the rear portion of the upper structure is kept minimal, there is less possibility of the counterweight hitting against a tree or a slope, allowing the operator to operate the machine at ease. Furthermore, large digging height facilitates slope finishing work. The cab mount system absorbs shocks and aids vibration reduction to provide comfortable ride. Retractable Seat Belt Easy-to-use retractable seat belt is employed. Lock Lever When lock lever is placed in lock position all hydraulic controls (travel, swing, boom, arm and Sliding Convex Door The sliding convex door facilitates easy entrance in confined areas. Tempered and Tinted Glass The glass features high strength and Rubber Silicon Oil bucket) are inoperable. Skylight Skylight with window can be opened for overhead visibility. Lever shown in lock position blocks ultraviolet rays. Pressurized Cab Auto air conditioner, air filter and a higher internal air pressure prevent external dust from entering the cab. 8 9 PC138US-8 H Y D R A U L I C E X C AVAT O R MAINTENANCE FEATURES Easy Maintenance Komatsu designed the PC138US-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 PC138US-8. Large TFT LCD Monitor Equipped with the Fuel Pre-filter (with Water Separator) Removes water and contaminants in the fuel to prevent fuel problems. Side-by-side Cooling The oil cooler, aftercooler and radiator are installed side by side. As a result, it is very easy to clean the radiator, etc. In addition, the operator can remove and install the aftercooler, radiator and oil cooler in a short time. Oil cooler Aftercooler Radiator Dust-proof net 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. Industry first function keys facilitate multi-function operations. Displays data in 12 languages to globally support operators around the world. Indicators 1 Auto-decelerator Working mode EMMS (Equipment Management Monitoring System) Monitor function Controller monitors engine oil level, coolant temperature and battery charge, etc. If controller finds any abnormality, it is displayed on the LCD. Washable Floor Optimum Maintenance Layout With the left and right side service doors, it is possible to access the major maintenance points from ground level. Furthermore, the fuel drain valve, engine oil filter, swing machinery oil filler, and PTO oil filler are remote mounted, facilitating easy maintenance. 2 Control valve 1 2 3 2 The PC138US-8's floor is easy to keep clean. The gently inclined surface has a flanged floor mat and drainage holes to facilitate run off. 3 Travel speed 4 Engine water temperature gauge 7 5 Hydraulic oil temperature gauge 6 7 8 Fuel gauge Eco-gauge Function switches menu 6 Large Tool Box Large tool box provides plenty of space. Grease pump storage space is also provided. Basic operation switches 4 5 Maintenance function Monitor informs replacement time of oil and filters on LCD when the replacement interval is reached. Basic operation switches 8 1 Auto-decelerator 2 Working mode selector 3 Traveling selector 4 Buzzer cancel 5 Wiper 6 Windshield washer 1 2 3 Cab Tool Box Valve room Fuel tank Hydraulic tank Function switches 4 5 6 1 12 Engine Trouble data memory function Monitor stores abnormalities for Air conditioner operation switches 11 Oil cooler After cooler 10 Radiator 3 4 5 6 8 7 effective troubleshooting. 9 7. Air cleaner Excellent Reliability and Durability High Rigidity Work Equipment Boom and arms are constructed of thick plates of high tensile strength steel. In addition, these structures are designed with large cross-sectional areas and Metal Guard Rings Protect all the Hydraulic Cylinders and Improve Reliability. Metal guard ring (Cast iron ring) DT-type Connectors DT-type connectors seal tight and have higher reliability. Waterproof seal Waterproof seal Maintenance Costs Reduced Eco-white Filter Element High performance filters are used in the hydraulic circuit and engine. Longer hydraulic oil, hydraulic oil filter, engine oil and engine oil filter element replacement intervals significantly reduce maintenance costs. Engine oil & Engine oil filter Hydraulic oil generous use of castings. The result is Photo may include optional equipment. working attachments that exhibit long term durability and high resistance to bending and torsional stress. Piston ring Waterproof seal Long Greasing Interval Special hard material is used for the bushings of the work equipment to lengthen greasing interval. All bushing lubrication intervals of work equipment except arm top bushing are 500 hours, reducing maintenance costs. O-ring Face Seal Sturdy Frame Structure The revolving frame, center frame and undercarriage are designed by using the most advanced three-dimensional CAD and FEM analysis technology. Wear ring The hydraulic hose seal method has been changed from a conventional taper seal to an O-ring seal. [. . . ] 1 x piston motor with swing holding brake Relief valve setting: Implement, travel circuit . 34. 8 MPa 355 kgf/cm2 5, 050 psi Swing circuit. 27. 1 MPa 276 kgf/cm2 3, 920 psi Pilot circuit . 3. 2 MPa 33 kgf/cm2 470 psi Hydraulic cylinders: (Number of cylinders ­ bore x stroke) Boom . [. . . ]