User manual CATERPILLAR 621H BROCHURE

[. . . ] 3 m3 26 127 kg 24 yd3 57, 600 lb 621H Features Economical Hauling System The wheel tractor-scraper, with its ability to load quickly, haul at high speeds and dump on the go, has the potential to be the most profitable hauling system on the job site. This efficiency can result in fewer machines on the job, reduced operating costs and jobs delivered in a shorter period of time. Power Train Caterpillar designed and manufactured power train components deliver the power necessary for fast loading and quick hauls. Operator Station Single joystick control of implements, adjustable arm rests, seat, steering column and room to maneuver all reduce fatigue and increase operator comfort and productivity throughout the shift. [. . . ] The standard Cat Engine Brake reduces brake wear and enhances machine control. 6 3 2 5 7 8 6 4 4 8 1 Structures Cushion Hitch Superior design and construction delivers long term durability. Electronically actuated with parallelogram-type linkage for exceptional strength, with two nitrogen accumulators (4) using free-floating pistons (8) to deliver a smooth ride for enhanced operator comfort and machine durability. Leveling valve (7) applies pressure via an orifice (5) to automatically center the piston in load cylinder (1) · Steel castings are used to eliminate many welded joints and increase strength · Double-kingbolt design (2, 3) withstands high external forces, simplifies installation and removal Lockout Switch An operator-selectable lockout switch, located on the joystick, locks the cushion hitch down for improved control of the cutting edge during loading and dumping. nitrogen Accumulator Vertically mounted hydraulic cylinder transfers road shocks to nitrogen accumulators. Nitrogen accumulator absorbs and dampens road shocks, thus preventing the loads from being transmitted to the hitch components or to the operator. Non-Metallic Fenders and Fuel Tank The new fuel tank is made of recyclable roto-milled polyethylene and keeps the fuel cleaner with controlled filtration and cleanout access ports. The new capacity of the new fuel tank has been increased, providing operators with 10 plus hour shifts depending on engine load factors. The new tractor fenders are made of the same highly durable, roto-milled polyethylene. The non-metallic fenders prevent material buildup when operating in sticky materials. 7 Scraper Bowl Redesigned Bowl Caterpillar designed and built for rugged performance and reliability. The 621H uses a new bowl design than enhances productivity through a 9% increase in bowl capacity over previous models. The low profile design offers low resistance to incoming materials, while cellular constructions adds strength and dent resistance to the bowl sides and floor. Hydraulic Lines Protection Hydraulic lines durability is increased by routing them through the bowl sidewalls where they are protected from damage on the job site. Ejection System The powerful ejection system provides constant spreading control while minimizing carryback material. An overflow guard on the ejector helps retain material and keep it from spilling over onto the rear of the scraper. ) options are available to optimize the machine for different material types and loading conditions. gET options include standard , serrated , and abrasion resistant material (ARM). Most are reversible to provide long life and reduced operating costs. 8 Loading Options Push-Loading Flexible loading options to adapt to changing job site conditions. [. . . ] EPA Tier 4 Interim/ EU Stage IIIB emission standards Standard Shipping 35 507 kg 78, 279 lb Weight ­ 10% fuel Operating 36 185 kg 79, 774 lb Weight ­ full fuel tanks Loaded, based 62 312 kg 137, 374 lb on a rated load Push-Pull Shipping 36 782 kg 81, 090 lb Weight ­ 10% fuel Operating 37 440 kg 82, 541 lb Weight ­ full fuel tanks Loaded, based 63 567 kg 141, 141 lb on a rated load Machines achieving prior U. Steering System meets ISO 5010:2007 for up to a maximum approved operating weight · Brakes meet ISO 3450:1996 for up to a maximum approved operating weight · rollover Protective Structure (ROPS) is certified to a tractor only mass of 18 800 kg (41 , 447 lb) as tractor portion of tractorscrapers per Table 1 of ISO 3471:2008. This excludes scraper weight and payload. Seat Belts meet SAE J386 June 1985 · Forward and Reverse Alarms meet ISO 9533:1989 · The dynamic operator sound pressure level is 76 dB(A) when "ISO 6396:2008" is used to measure the value for an enclosed cab. [. . . ]