User manual CATERPILLAR 621H BROCHURE

[. . . ] all controls , levers , switches and gauges are positioned to maximize productivity and facilitate a reduction in operator fatigue. Viewing Area Designed for excellent all-around visibility and clear sight lines to the job site, the large viewing area offers exceptional visibility to the front of the machine as well as to the cutting edge. The air conditioning unit has been relocated to beneath the cab, allowing the operator enhanced visibility. 3 Operator Comfort High productivity from a comfortable, confident operator. [. . . ] 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). 8 Loading Options Push-Loading Flexible loading options to adapt to changing job site conditions. To achieve maximum productivity, the 621H should be push-loaded with a D8- or D9-size Track-Type Tractor. Push-Pull The push-pull arrangement is recommended for applications that require a large amount of material to be moved very quickly at low cost per bank cubic meter (bank cubic yard). The push-pull arrangement concentrates the combined power of two machines onto one cutting edge. [. . . ] The exterior sound power level is 113 dB(A) when the value is measured according to the static pressure test procedures and the conditions that are specified in "ISO 6393:2008. 1 2 3 4 5 6 7 8 11 10 9 14 15 12 13 16 1 Width ­ overall machine 2 Width ­ tractor (ladder down) 3 Width ­ tractor 4 Width ­ rear tire centers 5 Width ­ inside bowl 6 Width ­ outside rear tires 7 Height ­ overall shipping 8 Height ­ top of cab mm 3565 3688 3381 2290 3048 3165 4029 3612 in 140. 1 15 621H Wheel Tractor-Scraper Specifications 621H Rimpull GROSS WEIGHT lb X 1000 kg X 1000 0 0 20 10 40 20 60 30 80 40 100 50 120 60 140 160 70 lb X 1000 80 kg X 1000 110 100 90 80 70 50 45 40 35 30 1 E L 60 25 50 20 40 30 20 10 15 10 5 30% 25% 2 3 4 5 6 7 8 30 20 35 40 25 45 30 50 20% 15% 10% 5% 55 km/h mph 0 0 5 5 10 15 10 20 25 15 SPEED 16 TOTAL RESISTANCE (Grade Plus Rolling) RIMPULL 621H Retarding* GROSS WEIGHT 0 0 20 10 40 20 60 30 80 40 100 50 120 60 140 160 70 lb X 1000 80 kg X 1000 E L 30% 25% 20% 3 15% 4 5 6 7 8 10% 5% 0 0 5 5 10 15 10 20 25 15 30 20 35 40 25 45 30 50 55 35 60 km/h mph * at sea level on high setting SPEED Effective Grade (Grade minus Rolling Resistance) 17 621H Standard Equipment Standard equipment may vary. POWER TRAIN TRACTOR: C13 ACERT engine with MEUI Cat Engine Brake Electric start, 24 Volt Air cleaner, dry type with precleaner Fan, hydraulic Diesel Particulate Filter (DPF) aftertreatment (for engine meeting U. [. . . ]