User manual CATERPILLAR HW300 BROCHURE

[. . . ] 6 Structures Superior structural design delivers stateof-the-art ride, capacity, and material control while assuring the durability and reliability customers expect from Caterpillar. 7 Push-Pull Arrangement (637G only) For maximum production capability, Caterpillar offers an optional push-pull arrangement for the 637G, which allows two push-pull scrapers to act as a selfloading machine. 12 Auger Arrangement Provides self-loading capability with the same wide material appetite as an open bowl machine. 13 Quick loading, high travel speeds and the ability to load and dump on the run yield ® fast cycle times, allowing Caterpillar Wheel Tractor-Scrapers to consistently deliver high productivity. 2 Operator Station Convenient control placement and a comfortable work environment are keys to high productivity. [. . . ] Twin nitrogen accumulators help deliver a smooth ride for enhanced operator comfort. · cushion hitch lock down control for positive cutting edge down pressure when loading or spreading controlled oil flow dampens rebound oscillation leveling valve automatically centers piston in cylinder for all loads steel castings are used extensively to eliminate many welded joints and increase strength double-kingbolt design withstands high external forces and simplifies installation and removal 1 2 3 4 5 6 7 8 Load cylinder Hitch castings Scraper gooseneck Nitrogen accumulators Orifice Oil from tractor hydraulic system Leveling valve Free floating pistons · · · 3 2 4 · 4 1 5 7 8 6 8 Nitrogen Accumulators. Vertically mounted hydraulic cylinder transfers road shocks to nitrogen accumulators. They absorb and dampen road shocks, thus reducing loads from being transmitted to the operator. Lockout Switch. An operator-selectable lockout switch, located on the joystick, locks the cushion hitch for improved control of the cutting edge during loading and dumping. 7 Operator Station State-of-the-art productivity and operator comfort. Seat Suspension. The new standard seat suspension features a high performance air shock absorber with a self-contained air compressor. For operators requiring additional damping, dual shock absorbers in the seat suspension are available. Standard air conditioning system with relocated louvers enhances airflow in the cab. Convenient storage location includes space for a lunch box and first aid kit. The redesigned hood has sloped corners to maximize visibility while accommodating the low emissions engine. The redesigned hood and front shroud are wider to enclose the air-to-air aftercooler (ATAAC), ether starting aid, and lights. Fuel is precisely controlled during cranking, starting and acceleration to reduce smoke. The Engine Electronics are faster and more efficient than mechanically controlling the governor rack position. Simplified System. The electrical system has been redesigned to utilize three electronic control modules (ECM) on the tractor instead of four. If the restriction exceeds the allowable limit, it alerts the operator by sending a message to the Electronic Monitoring System (EMS III). The ADEM A4 controller activates the ether injection system during engine cranking to enhance cold weather starting. At high altitudes the system automatically de-rates fuel delivery as a function of barometric pressure sensed by the system's atmospheric pressure sensor. 10 Scraper Bowl Designed for optimum loading, material retention and ejection. Redesigned Bowl. The redesigned bowl minimizes falling material lodging between the bowl and the draft arm, which can result in premature wear. The modifications also provide better load retention on level ground or traversing down a grade. Bowl capacity has been increased by 3 yd3 (2. 3 m3), allowing more material to be moved. · · Low-profile bowl design offers less resistance to incoming materials. Cellular construction adds strength and dent resistance to bowl sides and floor. Bulldozer Ejection System. [. . . ] You receive the same warranty and reliability as new products at substantial cost savings. Make detailed comparisons of the machines under consideration before purchase. Cat dealers can estimate component life, preventive maintenance cost, and the true cost of lost production. Talk to your dealer about the range of available maintenance services. [. . . ]