37B4389 Controller for LIUGONG CLG933E / CLG935E Excavator

Product Overview

Part Number: 37B4389
Product Name: Main Controller / ECU Control Unit
Application: LIUGONG Excavator Electronic Control System
Compatible Models:

• LIUGONG CLG933E
• LIUGONG CLG935E
• LIUGONG CLG936E
• Other E-Series excavators using the C601 control platform

The 37B4389 Controller is the core electronic control unit responsible for coordinating engine communication, hydraulic system management, sensor monitoring, and machine operation functions. It acts as the "brain" of the excavator, ensuring efficient performance, precise hydraulic control, and reliable machine diagnostics.

Key Features

✓ OEM Quality Standard

• Manufactured according to original specifications
• Direct replacement for damaged controllers
• Stable performance and reliable operation

✓ Intelligent Machine Control

• Monitors machine operating status in real time
• Coordinates engine and hydraulic system communication
• Improves machine efficiency and fuel economy

✓ Durable Construction

• Heavy-duty aluminum housing
• Excellent resistance to vibration, dust, and moisture
• Suitable for harsh construction environments

✓ Stable CAN Bus Communication

• Fast and accurate data transmission
• Reliable communication with sensors, monitors, and engine systems
• Reduces machine fault occurrences

✓ Tested Before Shipment

• Communication inspection
• Appearance inspection
• Connector verification
• Functional testing when available

Compatible Equipment

LIUGONG Excavators

• CLG933E
• CLG935E
• CLG936E
• CLG915E (depending on controller configuration)
• Other LIUGONG E-Series excavators using 37B4389 controller systems

Main Functions

The controller manages and coordinates:

• Engine operating parameters
• Hydraulic system control
• Sensor signal processing
• Travel and swing functions
• Fuel management
• Fault diagnosis and protection
• CAN communication network
• Machine monitoring system

A properly functioning controller ensures smooth machine operation, optimized fuel consumption, and maximum productivity.

Common Failure Symptoms

Replacement may be required if the machine experiences:

• Machine cannot start
• No communication with monitor
• Hydraulic functions become abnormal
• Intermittent shutdowns
• Fault codes cannot be cleared
• Controller water damage
• Burnt or damaged circuit board
• Loss of machine power

Product Advantages

✔ Original Used Stock Available

✔ OEM New Replacement Available

✔ Strict Quality Inspection

✔ Technical Support Available

✔ Fast Worldwide Shipping

✔ Professional Export Packaging

✔ Construction Machinery Electronics Specialist

Important Notice

Before Ordering Please Provide:

• Machine Model
• Machine Serial Number
• Controller Label Photo
• Old Part Number
• Monitor Error Information (if available)

The controller program may vary according to machine configuration. Please provide the machine nameplate and controller label information before ordering so we can verify compatibility and prepare the correct unit.

Why Choose JISION?

JISION specializes in supplying:

• Excavator Controllers & ECUs
• Engine ECM Modules
• Wiring Harnesses
• Monitor Displays
• Solenoid Valves
• Sensors
• Diagnostic Tools

Our Advantages

✔ OEM New & Original Used Parts

✔ Program Matching Support

✔ Professional Technical Assistance

✔ Global Shipping Service

✔ Reliable Quality Control

✔ One-Stop Construction Machinery Parts Solution

Marketing Slogan

JISION – Professional Supplier of Excavator Electronic Control Systems and Spare Parts Worldwide.