John Deere 350B Crawler Dozer: A Comprehensive Overview

[MikePhua]

The John Deere 350B Crawler Dozer, a model that has been a staple in heavy machinery for decades, continues to stand out in the industry for its durability, performance, and versatility. With a long history dating back to its initial release, the 350B has seen use in various sectors, from construction to agriculture, to mining and beyond. In this article, we’ll explore the features, specifications, common issues, and some tips on maintaining this dozer.
Development History of the John Deere 350B
The John Deere 350B was introduced in the 1970s as a part of John Deere's expanding line of crawler dozers. It was built to replace the older models, offering better engine performance, efficiency, and more advanced features to meet the growing demands of the construction and mining industries. This model was part of a transition towards more powerful, reliable, and versatile dozers designed to handle heavy-duty work in tough conditions.
John Deere’s crawler dozers have long been known for their robustness, and the 350B was no exception. Its size placed it in the category of medium-sized dozers, perfect for tasks like grading, land clearing, and trenching. While the model has been discontinued, many units are still in service today, thanks to their excellent build quality and reliable performance.
Specifications and Features
Understanding the specifications of the John Deere 350B is crucial for anyone looking to operate, purchase, or maintain the dozer. Here are some of the key features and specifications:

• Engine Type:
  • The 350B is powered by a John Deere 4045T engine, a 4-cylinder turbocharged diesel engine.
    
  • Displacement: 4.5 liters
    
  • Rated Power Output: Around 75 horsepower, making it efficient for medium-scale construction tasks.
    
  • Cooling System: Water-cooled for better temperature control during long hours of operation.
    
• Transmission:
  • The 350B features a power shift transmission system, offering smoother gear shifting and better control for operators.
    
  • It has 3 forward gears and 3 reverse gears, allowing for a wide range of operating speeds and directions, ideal for complex tasks like trenching or land leveling.
    
• Dimensions:
  • Operating Weight: Approximately 16,000 to 17,000 pounds (7,250 to 7,700 kg), depending on configuration and attachments.
    
  • Width: 7.6 feet (2.3 meters)
    
  • Length: 12.5 feet (3.8 meters)
    
  • Height: 8 feet (2.4 meters) from the ground to the top of the cab.
    
• Track Width:
  • The 350B comes with 18-inch wide tracks, which offer better ground clearance and stability, allowing the dozer to operate effectively in soft, muddy, or uneven terrains.
    
• Hydraulics:
  • Pump Flow Rate: The hydraulic system is efficient with a flow rate of around 20-25 gallons per minute, providing sufficient pressure to lift or push heavy loads.
    
• Blade Options:
  • The 350B offers a wide variety of blade attachments, including straight blades and universal blades, which can be used for tasks like grading, moving dirt, or clearing brush. The blade width can vary from 6 to 8 feet.
    

Key Benefits of the John Deere 350B Crawler Dozer
The John Deere 350B has been recognized for several notable benefits that make it a favored choice among operators:

• Durability:
  • As a crawler dozer, the 350B has been designed for long-lasting performance. It has an ironclad reputation for withstanding harsh working environments and heavy-duty operations.
    
• Versatility:
  • This model can be used across a range of industries, from general construction to forestry and mining. Its ability to easily switch between different attachments makes it a go-to piece of equipment for versatile tasks.
    
• Fuel Efficiency:
  • The John Deere 350B's engine, though powerful, is relatively fuel-efficient compared to other machines of similar size. This has made it an economical choice for businesses that need to maintain low operating costs while handling large-scale tasks.
    
• Operator Comfort and Safety:
  • The 350B is designed with operator comfort in mind, featuring a spacious cab and easy-to-use controls. Its hydraulic system provides smoother operation, reducing strain on the operator, especially during long hours of use.
    

Common Problems with the John Deere 350B
While the John Deere 350B is widely praised for its reliability, like all machines, it can encounter issues over time. Some of the more common problems include:

• Engine Overheating:
  • As with many older machines, overheating can become an issue if the cooling system is not properly maintained. It's important to check the radiator and cooling fans regularly to ensure optimal performance.
    
• Hydraulic Leaks:
  • Some users have reported hydraulic leaks, particularly in older units. Regular inspections of hoses, cylinders, and seals are essential for preventing this issue from escalating.
    
• Track Wear:
  • Due to the dozer's weight and use on rough terrain, the tracks can wear out faster, especially if not regularly lubricated and adjusted.
    
• Transmission Problems:
  • Like any vehicle with a power shift transmission, the John Deere 350B can experience transmission slippage or loss of power if the transmission system is not maintained correctly. Regular fluid changes and inspections are essential.
    

Maintaining Your John Deere 350B
Proper maintenance is key to prolonging the life of your John Deere 350B. Here are some essential maintenance tasks:

1. Engine Maintenance:
   • Regularly check and replace the engine oil and filters. Keeping the engine clean and properly lubricated will prevent many common issues like overheating or mechanical failure.
     
2. Track Maintenance:
   • Keep an eye on the tracks, adjusting the tension as needed and inspecting the pads for wear. Regular cleaning of the undercarriage can prevent dirt and debris from causing premature wear.
     
3. Hydraulic System Care:
   • Ensure that the hydraulic fluid is at the correct level and that no leaks are present. Replace hydraulic filters regularly and inspect hoses for wear and tear.
     
4. Transmission Fluid:
   • Check and change the transmission fluid according to the manufacturer’s recommendations. Overheating or dirty fluid can cause the transmission to slip or perform inefficiently.
     
5. Cab and Controls:
   • Maintain the cabin by keeping it clean and free from dust. Ensure that all controls are functioning smoothly to maintain operator comfort and safety.
     

Conclusion
The John Deere 350B Crawler Dozer has earned its place as a reliable and versatile piece of equipment in the heavy machinery world. Its durable engine, efficient transmission, and comfortable design make it an ideal choice for medium-duty tasks across a variety of industries. While it’s important to be aware of the common issues and perform regular maintenance, the 350B remains a testament to John Deere’s commitment to quality and innovation. Whether you are an experienced operator or a business looking to purchase a used dozer, the John Deere 350B offers a solid balance of performance, reliability, and efficiency.