Understanding the Operating Controls of the John Deere 700J: A Detailed Guide

[MikePhua]

The John Deere 700J dozer is a powerful and versatile piece of heavy machinery used in various construction and earthmoving projects. To maximize its efficiency and ensure smooth operation, it's crucial for operators to be familiar with the dozer’s operating controls. This article delves into the key controls of the JD 700J, providing a comprehensive understanding of how they work and tips for optimal use.
Overview of the John Deere 700J
The John Deere 700J is a crawler dozer equipped with a range of features that make it suitable for various tasks such as land clearing, grading, and digging. Known for its durability and reliable performance, this machine is equipped with advanced hydraulics, a powerful engine, and an intuitive control system.
Key Specifications:

• Engine: 6.8-liter 6-cylinder turbocharged diesel engine.
  
• Horsepower: Approximately 145 horsepower.
  
• Operating Weight: Around 22,000 pounds.
  
• Blade Capacity: Capable of handling a wide range of blade attachments for different tasks.
  

The operating controls of the 700J are designed to allow the operator to easily maneuver the machine, adjust the blade, and control hydraulic functions with precision.
Main Operating Controls
The operating controls on the John Deere 700J are essential for the proper functioning of the machine. Below are the primary controls that operators need to understand:
1. Joystick Control System
The John Deere 700J features an electronic joystick control system that allows for precise movements of the dozer blade. This system controls both the blade and the machine’s steering functions, making it easier to operate compared to traditional manual systems.

• Blade Control: The joystick allows the operator to adjust the angle and height of the blade, making it ideal for tasks such as grading and leveling.
  
• Steering Control: The joystick also functions as a steering control, enabling smooth and precise turns.
  
• Hydraulic Function Control: The joystick can be used to engage auxiliary hydraulic functions, such as lifting attachments or controlling the ripper.
  

Advantages of the Joystick System:

• Precision: The joystick provides fine control over movements, helping operators achieve more accurate results.
  
• Reduced Operator Fatigue: The ergonomic design and electronic control system reduce the effort required for operation, making it easier to control the machine for extended periods.
  
• Multifunctionality: The joystick integrates multiple functions into a single control, simplifying the operator’s workflow.
  

2. Transmission Control Lever
The transmission control lever is responsible for controlling the speed and direction of the John Deere 700J. It offers forward, neutral, and reverse gears, allowing the operator to navigate the machine across varying terrains.

• Forward Gear: Allows the dozer to move forward, with speed adjustments made through the transmission lever.
  
• Reverse Gear: Enables the operator to move the machine backward, which is useful for repositioning or backing out of tight spots.
  
• Neutral: Disengages the transmission for idle or parking purposes.
  

Operators can select the appropriate gear depending on the task at hand, whether it involves fast travel over open ground or slow, precise movements in confined spaces.
Transmission Control Tips:

• Smooth Transitions: It’s important to smoothly transition between forward, reverse, and neutral to prevent wear on the transmission.
  
• Proper Speed for Tasks: Select a gear that suits the task—higher speeds for travel and lower speeds for digging and grading operations.
  

3. Blade Angle and Tilt Control
The blade angle and tilt controls on the John Deere 700J allow the operator to modify the blade’s position for specific tasks. These adjustments are essential for achieving the desired grade or surface finish.

• Blade Angle: Adjusts the angle of the blade, which is especially useful for pushing material in different directions.
  
• Blade Tilt: Allows for the adjustment of the blade’s tilt to achieve the proper angle for digging or leveling.
  

Both of these controls are critical for operators working on grading, excavation, and earthmoving tasks, allowing them to maintain precision and control over the dozer’s operations.
4. Hydraulic Function Controls
The hydraulic system on the John Deere 700J is responsible for powering the various attachments and blade functions. Understanding how to operate the hydraulic function controls is crucial for tasks such as lifting and lowering the blade, engaging a ripper, or using other attachments.

• Blade Raise/Lower: The hydraulic control is used to raise and lower the blade, allowing for better control when cutting or filling material.
  
• Ripper Control: The hydraulic system can also be used to control attachments such as a ripper or other earthmoving tools.
  
• Auxiliary Functions: In addition to the main blade functions, the hydraulic system can power auxiliary tools, increasing the machine's versatility.
  

Hydraulic Tips:

• Prevent Overloading: Ensure the hydraulic system isn’t overloaded by avoiding excessive lifting or pushing, which could strain the system.
  
• Regular Maintenance: Periodic inspection and maintenance of hydraulic hoses, filters, and pumps are necessary to keep the system running smoothly.
  

Additional Controls
Beyond the main operating controls, the John Deere 700J has several other features that contribute to its ease of operation and safety:
5. Foot Pedals for Steering and Speed Control
In addition to the joystick, the 700J includes foot pedals for steering and controlling speed. The pedals allow for better control when navigating steep inclines or rough terrain.

• Steering Pedals: These control the left and right tracks, making turns more fluid.
  
• Speed Pedal: Controls the speed of the machine, allowing the operator to increase or decrease the pace as necessary.
  

6. Safety and Comfort Features
The John Deere 700J is designed with safety and comfort in mind. Key features include:

• Operator’s Seat: Ergonomically designed to reduce fatigue and improve comfort during long hours of operation.
  
• Visibility: The cab provides excellent visibility, which is essential for precise operation and safety on the job site.
  
• Safety Switches: Safety features such as the seat belt alarm and emergency shutdown switches ensure the operator's safety at all times.
  

Operating Tips for the John Deere 700J
To maximize the performance and lifespan of the John Deere 700J, operators should keep the following tips in mind:

• Smooth and Precise Movements: The joystick control system offers excellent precision, but it’s important to operate the machine smoothly to prevent wear and tear.
  
• Regular Checks: Periodically check the hydraulic system, transmission, and engine for any signs of issues, such as leaks or abnormal sounds.
  
• Proper Training: The 700J’s controls can be complex, especially for those new to operating heavy machinery. Proper training and practice are essential to ensure safe and efficient operation.
  

Conclusion
The John Deere 700J is a robust dozer that offers advanced control systems for efficient operation across a variety of tasks. By familiarizing yourself with the joystick controls, hydraulic functions, transmission levers, and safety features, you can ensure that the dozer performs optimally while maintaining safety and productivity on the job site. With proper use and regular maintenance, the 700J can continue to be a valuable asset in any heavy equipment fleet.