Motoniveladores Construccion

12H

®

Motor Grader

Standard Version
Cat ® 3306 turbocharged diesel engine with Engine Power Management Gears 1 - 3 104 kW Gears 4 - 8 123 kW Blade width 3658 mm 140 hp 165 hp 12 ft Operating weights (approximate) On front wheels 3932 kg On rear wheels 10 632 kg Total machine 14 564 kg 8670 lb 23,444 lb 32,114 lb

Caterpillar® 12H Motor Grader
The 12H blends productivity anddurability to give you the best return on your investment.

Power Train The field-proven 3306 engine offers exceptional lugging performance and fuel efficiency. The power shift transmission features smooth, on-the-go shifting and electronic overspeed protection. To increase productivity, the direct drive transmission has eight forward speeds and six reverse speeds. pg. 4-5

Hydraulics The load-sensinghydraulic system lowers power consumption and system heat. The control valves provide low lever effort, balanced flow and consistent implement control. pg. 6

Drawbar, Circle & Moldboard The blade linkage design enhances moldboard positioning. A long wheel base allows the operator to obtain an aggressive moldboard angle for better material movement. The rugged construction of the drawbar,circle and moldboard, and use of replaceable wear inserts provide durability and minimize maintenance costs. pg. 7

Matched and balanced components. The Cat® 3306 engine, direct-drive power shift transmission and load-sensing hydraulics are designed to work together to deliver top productivity in all applications. Superior visibility, control layout and operating ease. The operator is the single mostimportant factor in maintaining high productivity throughout the work day. By offering a comfortable and convenient operator's station, Caterpillar helps operators achieve peak performance.

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Operator’s Station Well-positioned blade linkage, a tapered engine hood and optional ROPS cab with large windows ensure a clear view in all directions. A roomy operator station, low-effort controlsand optional low sound level cab creates a more productive work environment. pg. 8-9

Serviceability All service areas are easily accessible. A modular design permits easy removal of power train components for servicing. Diagnostic capability allows fast servicing of the transmission. pg. 10

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Power Train
Matched Caterpillar components deliver smooth, responsive performance andreliability.

Cat 3306 engine continues its tradition of powerful, efficient performance and unmatched reliability and durability. The six-cylinder engine is turbocharged with a high displacement-to-power ratio. This large displacement produces better lugging capability, lower internal stresses and extended component life.

Superior lugging performance. High torque output and high torque rise make the3306 engine very responsive. The engine's lugging capability allows it to pull through sudden, short-term increases in loads, reducing the need to downshift. As a result, the operator can maintain desirable working speeds, which means the work gets done faster. Fuel efficiency. High fuel injection pressures ensure proper mixing of fuel and air. This high injection pressure, coupled with the precisemetering and timing of the fuel injection, results in superior fuel efficiency and reduced emissions. High compression ratios ensure dependable cold-starting performance and low emissions.

Extended engine life. The large borestroke design and conservative power rating help minimize internal stresses and increase component life. The low engine speeds reduce engine wear and sound levels. Enginepower management delivers a full-rated net power of 123 kW (165 hp) in gears 4-8 forward. In lower gears, where the machine is traction-limited, engine horsepower is automatically reduced to 104 kW (140 hp). Engine power management works to lower fuel consumption as well as reduce tire slippage and wear in the lower gears. Electronic overspeed protection helps prevent engine and transmission...