Caterpillar Cat 320D GC Excavator Parts Manual (JZA)

Original price was: $49.99.Current price is: $39.99.

Caterpillar Cat 320D GC Excavator Parts Manual (JZA)

Caterpillar CAT 320D and 320D L Excavators are essential machinery in the construction and excavation industry. These machines are known for their reliability, efficiency, and durability. For optimal performance and longevity, it is crucial to understand their parts and maintenance requirements. This guide provides a detailed overview of the CAT 320D and 320D L Excavators, focusing on parts identification, maintenance procedures, and troubleshooting tips.



Caterpillar 320D GC Parts Manual 

Comprehensive Guide to Caterpillar CAT 320D and 320D L Excavators: Parts and Maintenance Manual

Caterpillar Cat 320D & 320D L Excavators Parts (JGZ, MDE) Manual

Detailed Parts Overview

Models Covered:

Caterpillar Cat 320D Gc Excavator

Jza1-Up (Machine)
C6E30000-Up (Engine)

Powered By C6.6 Engine

Manual Contents:

General Information
Repair Alternatives
Supplement Coolant Additives
Maintenance Parts
Machine Arrangement
Engine Arrangement
Basic Engine
Lubrication System
Cooling System
Air Inlet And Exhaust System
Fuel System
Electrical And Starting System
Power Train
Frame And Body
Braking System
Sterring System
Hydraulic System
Work Tools
Operator Station
Service Equipment And Supplies
Part Number Index

Engine Components

The CAT 320D and 320D L Excavators are powered by a robust C6.4 ACERT engine. Key components include:

  • Cylinder Block: The foundation of the engine, housing the cylinders.
  • Pistons and Rings: Essential for maintaining compression and transferring force.
  • Crankshaft: Converts reciprocating motion into rotational motion.
  • Camshaft: Controls the opening and closing of engine valves.
  • Fuel Injection System: Ensures precise fuel delivery for optimal combustion.

Hydraulic System

The hydraulic system is pivotal for the excavator’s functionality. Major components include:

  • Hydraulic Pumps: Supply hydraulic fluid to various parts of the machine.
  • Hydraulic Cylinders: Convert hydraulic fluid pressure into mechanical force.
  • Control Valves: Regulate the flow and pressure of hydraulic fluid.
  • Hydraulic Hoses: Transport hydraulic fluid between components.


The undercarriage provides stability and mobility. Key parts are:

  • Tracks and Track Rollers: Ensure smooth movement and traction.
  • Idlers and Sprockets: Guide and drive the tracks.
  • Track Tensioners: Maintain the correct tension in the tracks.

Operator Cab

The operator cab is designed for comfort and efficiency. Important features include:

  • Control Levers and Joysticks: Enable precise control of the excavator.
  • Display Monitor: Provides real-time information on machine status.
  • Seat and Ergonomics: Ensure operator comfort during long hours of operation.

Caterpillar Cat 320D GC Excavator Parts Manual (JZA): Maintenance Procedures

Regular Inspections

Conduct regular inspections to identify and address potential issues early. Focus on:

  • Engine Oil Level and Quality: Check and replace as needed.
  • Hydraulic Fluid: Ensure proper levels and replace filters regularly.
  • Track Condition: Inspect for wear and adjust tension as necessary.
  • Electrical Systems: Test batteries and electrical connections.

Scheduled Servicing

Follow the manufacturer’s recommended servicing schedule:

  • Engine Oil and Filter Changes: Typically every 250 hours of operation.
  • Hydraulic System Maintenance: Replace hydraulic oil and filters every 500 hours.
  • Air Filter Replacement: Check every 250 hours and replace as needed.
  • Cooling System Maintenance: Inspect and clean the radiator and cooling fins regularly.

Troubleshooting Common Issues

Identify and resolve common issues to minimize downtime:

  • Hydraulic System Leaks: Check hoses and connections for leaks and replace damaged parts.
  • Engine Overheating: Ensure the cooling system is functioning correctly and clean debris from the radiator.
  • Electrical Problems: Inspect wiring and connectors for damage and corrosion.

Caterpillar Cat 320D GC Parts (JZA)


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Caterpillar 320D GC Parts Manual 
Caterpillar Cat 320D GC Excavator Parts Manual (JZA)
Original price was: $49.99.Current price is: $39.99.