Used Excavator CAT 326D Gallery, Images, Pictures

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Used Excavator CAT 326D Main Parts Pictures

The CAT 326D is a larger hydraulic excavator designed for medium to heavy-duty tasks, including digging, lifting, and material handling. It is built for high productivity and efficiency in construction, mining, and demolition projects.

Here are the main parts of the CAT 326D:

1. Engine

• Engine Type: C6.4 ACERT™ Diesel Engine.
• Horsepower: Approximately 173 hp (129 kW).
• Function: Powers the excavator and its hydraulic systems, enabling digging, lifting, and moving.
• Features:
  • ACERT™ technology for better emission control and improved fuel efficiency.
  • Turbocharged for enhanced engine performance.
  • Optimized for low emissions and high power-to-fuel efficiency.

2. Hydraulic System

• Main Hydraulic Pump: Provides hydraulic flow to the boom, arm, bucket, swing, and travel mechanisms.
• Hydraulic Cylinders: Actuators that control the movement of the boom, arm, and bucket.
• Hydraulic Tank: Stores hydraulic fluid to be pumped to the system.
• Control Valve: Directs hydraulic fluid to the correct parts based on operator input.
• Hydraulic Filters: Ensure the hydraulic fluid is clean, prolonging the lifespan of the system.

3. Boom

• Function: The boom extends from the main frame and supports the arm and bucket, allowing for vertical and horizontal reach.
• Hydraulic Cylinder: Allows the boom to raise and lower.
• Boom Design: Reinforced and optimized for strength while minimizing weight to maximize efficiency.

4. Arm (Stick)

• Function: The arm connects the bucket to the boom and provides the range needed for digging and scooping.
• Hydraulic Cylinder: Controls the arm’s extension and retraction.
• Arm Design: Durable, designed to provide maximum digging depth and reach.

5. Bucket

• Function: Used for digging, lifting, and transporting material.
• Bucket Types: Customizable depending on task (e.g., general-purpose bucket, heavy-duty bucket, grading bucket, etc.).
• Bucket Linkage: Connects the bucket to the arm and allows it to tilt, scoop, and dump.

6. Undercarriage

• Tracks: Steel or rubber tracks that provide mobility, stability, and support for the machine.
• Track Rollers: Support the tracks and help distribute the weight of the machine evenly.
• Sprockets: Provide the mechanism that drives the tracks.
• Idlers: Keep the tracks tensioned and aligned to avoid slipping.

7. Cab and Operator Controls

• Cab: Fully enclosed, pressurized, and designed for comfort, offering operator protection from noise, dust, and weather conditions.
• Ergonomics: Adjustable seating, hydraulic controls, and a customizable operator interface for increased comfort and productivity.
• Display Screen: The monitor provides critical information such as fuel efficiency, performance metrics, maintenance alerts, and diagnostic information.
• Controls: Joysticks and pedals to control the machine’s movement (travel, boom, arm, bucket) and auxiliary functions.

8. Travel Mechanism

• Drive Motors: Powers the movement of the tracks for forward, backward, and turning motions.
• Travel Speed: Adjustable travel speeds (high and low) depending on the work site requirements.
• Hydraulic Drive: Allows for variable speed adjustments, making it ideal for rough terrains.

9. Counterweight

• Function: Located at the rear of the excavator, the counterweight helps balance the excavator during lifting or digging operations.
• Weight: Typically heavy, it helps prevent tipping by offsetting the weight of the arm and bucket, especially when extended.

10. Swing Mechanism

• Swing Motor: Powers the rotation of the upper structure (cab, boom, arm, and bucket) around the undercarriage.
• Swing Bearings: Large bearings that support the upper structure during rotation.
• Swing Speed Control: Adjustable speed for rotating the upper structure efficiently.

11. Cooling System

• Radiator: Cools the engine, hydraulic oil, and other systems to prevent overheating.
• Cooling Fans: Ensures air flow for engine and hydraulic system cooling.
• Coolant Reservoir: Stores and circulates the coolant to maintain the optimal operating temperature.

12. Electrical System

• Battery: Powers the electrical components and starts the engine.
• Alternator: Charges the battery while the engine is running.
• Wiring and Fuse Box: Distributes electrical power and provides protection to the components from overloads or short circuits.

13. Fuel System

• Fuel Tank: Stores diesel fuel to power the engine.
• Fuel Filter: Ensures clean fuel enters the engine, preventing damage from impurities.
• Fuel Pump: Transfers fuel from the tank to the engine.

14. Air Conditioning and HVAC System

• HVAC (Heating, Ventilation, and Air Conditioning): Provides climate control within the cab to maintain comfort for the operator.
• Air Filters: Prevent dust and dirt from entering the air intake of the HVAC system.

15. Exhaust System

• Muffler: Reduces the noise produced by the exhaust gases.
• Emission Control: Features like diesel particulate filters (DPF) and selective catalytic reduction (SCR) for compliance with environmental standards, reducing emissions and pollutants.