Used Excavator CAT 305E.E2 Gallery, Images, Pictures

The CAT 305E2 CR is a popular model of compact excavator from Caterpillar. It features a range of components that are key to its operation and durability. Here are the main parts of a used CAT 305E2 excavator:

1. Engine

• Type: Diesel engine, typically a 4-cylinder or 3.3L engine.
• Power Output: Approximately 55.4 hp (41.3 kW).
• Cooling System: Radiator, fan, and hydraulic oil cooler for temperature regulation.

2. Hydraulic System

• Pump: Gear pump or piston pump for the main hydraulics.
• Hydraulic Valves: Controls the flow of hydraulic fluid to various attachments and movements.
• Hydraulic Cylinders: Includes cylinders for the boom, arm, bucket, and swing functions.
• Hydraulic Oil Tank: Stores the hydraulic fluid for the system.

3. Undercarriage

• Tracks: Rubber or steel tracks depending on the model and usage conditions.
• Track Rollers and Idlers: Support the track and allow smooth movement.
• Track Frame: The frame structure that houses the tracks and associated components.
• Final Drive: Transfers power from the engine to the tracks.

4. Boom and Arm

• Boom: The main arm of the excavator that provides lifting and digging motion.
• Arm: Attached to the boom and moves the bucket in and out.
• Bucket Linkage: Connecting linkages that transfer force from the hydraulic system to the bucket.

5. Cab

• Operator Seat: Ergonomically designed for comfort and productivity.
• Control Joysticks: For controlling boom, arm, bucket, and swing functions.
• Display Panel: Provides information such as engine diagnostics, fuel levels, and maintenance alerts.
• HVAC System: Heating, ventilation, and air conditioning for operator comfort.

6. Swing Mechanism

• Swing Drive: Powers the rotation of the upper structure (house) of the excavator.
• Swing Motor: Drives the movement of the upper body.
• Rotary Joint: Allows fluid and power transfer for hydraulic components.

7. Chassis and Frame

• Upper Structure (House): Includes the cab, engine, and hydraulic components.
• Lower Frame: Supports the undercarriage and provides structural integrity.
• Counterweight: Provides balance to the machine during operations.

8. Electrical System

• Batteries: Power the electrical system and engine starter.
• Wiring and Sensors: Monitor performance and alert the operator to potential issues.
• Alternator: Charges the battery and powers electrical components.

9. Attachments and Tools

• Bucket: Can be swapped for different types (digging, grading, trenching).
• Thumb: Optional attachment for grasping material.
• Auger, Hammer, Grapple: Other attachments that increase versatility.

10. Cooling System

• Radiator and Fans: To maintain engine and hydraulic temperatures.
• Oil Cooler: Keeps hydraulic oil at the correct temperature.

11. Fuel System

• Fuel Tank: Stores diesel fuel.
• Fuel Filters and Lines: Ensure the clean delivery of fuel to the engine.

12. Braking and Safety System

• Service Brakes: Hydraulic or mechanical brakes for stopping the machine.
• Parking Brake: Keeps the machine stationary when not in use.
• Swing Lock: Prevents unwanted rotation of the upper structure during transport.