Cat’s new refined 336D2 exavator
Enhanced hydraulics, economy for 36t machine
The machine is powered by Cat’s C9 ACERT engine
Caterpillar has launched a new version of its 36-tonne exavator for markets including the Middle East, the 336D2, adding technical refinement to the durable and solid machine.
Its predecessor, the 336D, was known for its reliability and durability, and Cat has chosen to keep these basics in place, but adding an improved hydraulics system and a new fuel system with better economy.
The machine is powered by Cat’s C9 ACERT engine, which features precise electronic management of fuel and air to ensure optimum performance in all operating situations with exceptional fuel economy.
The engine runs at constant speed of 1,700 rpm which further contributes to fuel economy and reduced sound levels without compromising machine production. Engine function also benefits from a new three-stage fuel filtration system that removes harmful contaminants from low-quality fuel, resulting in enhanced uptime and longer service life for fuel system components.
In updating its hydraulics, Cat has introduced a electric pressure sensor that reduces hydraulic flow from the pump during light-load or no-load situations, which helps conserve fuel.
The engine and machine electronic control modules work in an integrated manner to provide optimum work power precisely where and when it is needed.
The system features a maximum pressure of 35 Mpa, and max oil flow of 2 x 265 L/min, sufficient hydraulic horsepower for digging and lifting as well as for using heavy-duty work tools.
Bodywise the 336D2 has robust construction of its mainframe, car body, track frames, and front linkage, and both standard and long undercarriages are available options as are two booms and five sticks. The 6.5-metre reach boom can be equipped with a choice of three sticks: 2.8, 3.2, and 3.9 metre. The 6.18-metre mass excavation boom has two stick choices: 2.15 and 2.55m.
Every day use is aided by a ergonomically-designed operator station with display monitor, low-effort joystick controls, and climate-control features.
Large windows ensure all-around visibility for increased operator awareness and job site safety, and viscous rubber cab mounts dampen both vibration and sound transmitted to the cab.
The 336D2 features ground-level access to most routine service points, including filters, radiator, and air-to-air aftercooler. A central grease block on the boom allows easy lubrication of the front linkage, and the S•O•S (Scheduled Oil Sampling) ports ensure quality samples from circulating fluid in the engine, hydraulic, and cooling systems. Convenient hydraulic test ports allow safe, accurate checks of system pressures.
