Used Caterpillar 336D2 Excavator

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Here is a detailed introduction of the Caterpillar 336D2 hydraulic excavator in English.

Caterpillar 336D2 Hydraulic Excavator – Detailed Overview

The Caterpillar 336D2 is a heavy-duty hydraulic excavator that forms part of Cat’s D2 Series, succeeding the highly popular 336D. Designed for demanding applications such as heavy construction, infrastructure development, quarrying, and mining, the 336D2 delivers a blend of raw power, refined hydraulic performance, operator comfort, and advanced technology integration. It meets stringent Tier 4 Final / Stage IV emission standards, combining productivity with environmental responsibility.

Engine and Powertrain

At the heart of the 336D2 is the Cat C9.3 ACERT™ diesel engine. This 9.3-litre, 6-cylinder, electronically controlled powerplant is built for reliability and fuel efficiency. Key engine specifications include:

Net Power (ISO 9249): 208 kW (279 hp) at 1,800 rpm
Gross Power (SAE J1995): 219 kW (294 hp)
Peak Torque: 1,402 Nm @ 1,400 rpm

The ACERT technology optimizes combustion while using a diesel particulate filter (DPF) and selective catalytic reduction (SCR) after-treatment to reduce emissions without sacrificing performance. An automatic engine speed control reduces rpm during idle and light-load conditions, further saving fuel. The robust cooling system features a hydraulically driven, variable-speed fan that operates only when needed, conserving power and lowering noise.

Hydraulic System

The 336D2 features a state-of-the-art load-sensing, closed-center hydraulic system that provides exceptional control, fast cycle times, and high digging forces. The main implement pump is a variable-displacement piston pump, complemented by a dedicated swing pump. System highlights:

Maximum Pump Flow: 2 × 280 L/min for the main implement circuits
Relief Valve Pressure (Implement): 35,000 kPa (5,076 psi)
Relief Valve Pressure (Travel): 35,000 kPa
Boom and Arm Regeneration Circuits: Reduce cycle times and fuel consumption by recycling oil during boom-down and arm-in movements.
Heavy Lift Mode: Increases system pressure for improved lifting capacity, ideal for placing heavy pipe or lifting large structures.
Priority Valve System: Ensures responsive steering when traveling and operating simultaneously.

Massive breakout forces are a hallmark:

Bucket Digging Force (ISO): 222 kN (49,900 lbf)
Arm Digging Force (Standard): 162 kN (36,400 lbf)

These forces allow the machine to power through compacted earth, rock, and tough materials with ease.

Operating Weight and Dimensions

The 336D2 is typically configured as a standard reach excavator (the “L” long undercarriage is standard on most markets). Typical specifications include:

Operating Weight: Approximately 36,800 – 37,600 kg (81,100 – 82,900 lb), depending on configuration, counterweight, and attachment.
Maximum Digging Depth: 7,540 mm (24 ft 9 in)
Maximum Reach at Ground Level: 11,160 mm (36 ft 7 in)
Maximum Cutting Height: 10,440 mm (34 ft 3 in)
Tail Swing Radius: 3,400 mm (11 ft 2 in)
Counterweight: Standard 6.5 metric tons; optional heavy-duty 7.2 t counterweight available for increased stability in lifting or heavy digging.

A rugged, reinforced undercarriage with grease-lubricated tracks and heavy-duty idlers and rollers ensures durability in abrasive environments.

Operator Environment and Comfort

Caterpillar prioritized operator safety and comfort, as a comfortable operator is a productive one. The 336D2 cab is ROPS-certified (Roll-Over Protective Structure) and features:

Spacious Interior: Excellent legroom and visibility through expansive glass panels, including a large right-side window and skylight for overhead views.
Air-Suspension Seat: Fully adjustable with heated/cooled options, lumbar support, and joystick consoles that move with the seat.
Automatic Climate Control: Maintains a preset temperature regardless of outside conditions.
Low Vibration and Noise: Viscous cab mounts and extensive sound dampening reduce operator fatigue. Interior noise levels are as low as 72 dB(A).
7-inch LCD Color Monitor: The intuitive display provides machine vital signs, fuel consumption data, rear-view camera feed, and interfaces with optional grade control systems. Navigation is via a jog dial and shortcut keys.
Joystick Controls: Low-effort, pilot-operated joysticks with proportional control for precise movements. Auxiliary hydraulic functions can be integrated into the joystick buttons.

Technology and Smart Features

The 336D2 is equipped with Cat’s advanced technology suite to boost efficiency and reduce costs:

Cat Grade Control (Optional): Available as a 2D or 3D system, it provides real-time bucket tip position and depth guidance, eliminating the need for grade checkers and reducing over-excavation. The system integrates directly with the machine’s hydraulics for semi-automatic grading.
Cat Product Link™: Standard telematics system that remotely tracks location, hours, fuel burn, idle time, and diagnostic codes via the VisionLink® web and mobile interface, enabling proactive fleet management.
Cat Detect (Optional): A personnel detection system using cameras and radar to alert the operator of objects or people in the machine’s blind spots.
ECO Mode and Fuel-Saving Tips: The monitor can display real-time fuel efficiency and offer tips to optimize operation.
Tool Recognition System: Automatically adjusts hydraulic flow and pressure settings when a specific Cat work tool is connected, simplifying attachment changes.

Attachments and Versatility

The 336D2 can be configured with a wide array of booms, sticks, and work tools to match any job:

Boom Options: Reach boom (standard) and mass excavation boom for higher bucket capacity and breakout force in digging applications.
Stick Options: A range from short (2.55 m) for heavy digging to long (3.9 m) for deep trenches and large reach.
Work Tools: Buckets (general purpose, heavy-duty rock, severe-duty), hydraulic hammers, multi-processors, shears, grapples, and compactors. The quick coupler system allows tool changes in seconds without leaving the cab.

Serviceability and Maintenance

Caterpillar designed the 336D2 with ground-level access to most routine service points, reducing downtime:

Grouped Filters and Grease Points: Engine oil, fuel, and hydraulic filters are located behind wide-opening doors at ground level.
Radial-Seal Air Filter: High-efficiency, easy to replace with a built-in pre-cleaner.
S-O-S℠ Sampling Ports: Integrated ports for oil analysis to predict component wear.
Extended Service Intervals: Hydraulic oil change at 4,000 hours; engine oil and filter at 500 hours under normal conditions.
Electric Fuel Priming Pump: Eliminates manual priming after filter changes.
Large Cooler Hinges: Swing-out coolers for easy cleaning of the radiator, aftercooler, and hydraulic oil cooler.

Applications

The Caterpillar 336D2 excels in:

Large-scale earthmoving and trenching
Quarry face loading and rock excavation
Heavy foundation work and basement digging
Pipeline construction
Demolition (with appropriate guarding and attachments)
Material handling in scrap yards or ports (with high-reach configuration)

Its combination of high breakout forces, powerful engine, and precise hydraulics makes it a favorite for contractors needing a versatile, durable 36-ton class excavator that can move massive amounts of material day after day. Although production of the 336D2 has been succeeded by the Next Generation 336, it remains a highly respected machine on the used and rental markets due to its proven reliability and straightforward, rugged engineering.

Non flooded

No accident

Original product

Used Caterpillar 336D2 Excavator

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