The Caterpillar 143H All-Wheel Drive Motor Grader blends productivity and durability to give you the best return on your investment. The Cat 3306 engine, power shift transmission, load-sensing hydraulics and all-wheel drive system are designed to work together to deliver top productivity in all applications.
The Cat 3306 continues its tradition of powerful, efficient performance and unmatched reliability and durability. The six-cylinder engine is naturally aspirated with a high displacement-to-power ratio.
High torque output and high torque rise make the engine very responsive.
High fuel injection pressures ensure proper mixing of fuel and air.
The large bore-stroke design and conservative power rating help minimize internal stresses and increase component life.
Electronic overspeed protection helps prevent engine and transmission damage from premature downshifting and grade-induced overspeeding.
Caterpillar designs and builds transmissions specifically for Cat motor graders.
Direct drive delivers superior fuel efficiency and better "feel" of blade loads, material hardness and ground speed.
Eight forward speeds and six reverse speeds give the operator a wide operating range.
Electronic transmission control produces easy, smooth shifts, which enable the operator to maintain uniform surfaces if shifting is required.
Low pedal effort and excellent modulation provide precise control of machine movements when using the inching pedal.
The dual air system supplies braking capacity to each side of the machine.
Caterpillar designs and builds multi-disc brakes that are completely sealed and adjustment-free.
Variable horsepower comes standard. When all-wheel drive is engaged, it delivers full power in all gears.
Optional autoshift improves ease of operation and maximizes productivity by automatically shifting the transmission at optimal shift points.
Normally, the variable displacement pump idles at near-zero output.
Implement control valves are designed and built by Caterpillar specifically for motor graders.
Implement controls are designed to reduce operator fatigue.
When the operator uses several controls at one time, flow is proportioned to ensure all implements can operate simultaneously. If hydraulic demand exceeds pump capacity, cylinder velocities will be reduced by the same ratio.
Large independent oil supply prevents cross-contamination and provides proper oil cooling, which means less heat build-up and extended component life.
Blade float is incorportated into the blade lift control valves.
The blade linkage design enhances moldboard positioning.
A long wheel base allows the operator to obtain an aggressive moldboard angle.
The Y-frame drawbar is constructed of two solid beams.
Tough, durable nylon composite wear inserts are located between the drawbar and circle and between the support shoes and circle.
The circle drive slip clutch protects the drawbar, circle and moldboard from shock when the end of the blade encounters hidden objects.
Optional blade lift accumulators absorb vertical shocks encountered when the moldboard contacts immovable objects.
Exceptional visibility helps improve operator confidence and productivity in all grader applications.
With the doors closed, interior sound level stays low. The quiet environment keeps the operator alert and focused.
Low efforts on all pedals, hydraulic controls and the transmission shifter reduce operator strain and fatigue.
Extra leg and foot room create a spacious, open cab.
The contour series suspension seat features fold-up armrests and a retractable seat belt.
Optional air conditioner and heater arrangements create a comfortable work environment for the operator.
The electronic monitoring system checks important machine systems and provides the operator with three levels of warning.
Comfort and convenience are designed into every feature.
Using the rocker switch on the transmission console, the operator can choose from three operating modes: automatic, manual or off. The torque control lever allows the operator to control the aggressiveness of the front wheels in both active modes.
All-wheel drive improves tractive performance in poor underfoot conditions such as snow, mud and sand.
The variable horsepower feature is standard on the 143H.
All-wheel drive is available in gears 1-7 forward and 1-5 reverse, making it effective in both low-speed and high-speed applications; from ditch cutting to snow winging.
Three operating modes are available: automatic, manual or off. The operator selects the operating mode using a rocker switch on the transmission console.
Easy access to service areas speeds up maintenance and ensures that routine service is performed on time.
Power train components feature a modular design so you can remove the engine, transmission or final drives independently for quick servicing.
Diagnostic capability offers fast servicing of the transmission.
Caterpillar designs and manufactures its own heavy-duty XT hose and installs it in all high-pressure circuits. Its resistance to abrasion, coupled with its exceptional strength and flexibility, help minimize maintenance and extend life.
O-ring face seals create a reliable seal and are used in all hydraulic circuits to minimize the possibility of oil leaks.
Removable covers on each side of the radiator guard provide access to the front of the radiator for cleanout with compressed air or pressure washer.
Extended Life Coolant (ELC) extends coolant life. A single addition of ELC Extender is the only maintenance required.
Separate wiring harnesses connect all electrical components.
Make detailed comparisons of the machines you are considering before you buy.
Look past the initial price. Consider the financing options available as well as day-to-day operating costs and dealer services.
Improving operating techniques can boost your profits.
More and more equipment buyers are planning for effective maintenance before buying equipment.
You will find nearly all parts at our dealer parts counter.
Repair, rebuild or replace? Your Cat dealer can help you evaluate the costs involved so you can make the right choice.
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