Understanding Bobcat 853: Common Questions and Solutions

[MikePhua]

The Bobcat 853 skid-steer loader is a popular and versatile piece of equipment in the construction and landscaping industry. It is designed to perform a wide variety of tasks, from digging and lifting to clearing snow and moving materials. However, like any piece of machinery, it can encounter issues that affect its performance. In this article, we will delve into some common questions related to the Bobcat 853 and provide solutions to help operators maintain and troubleshoot their machines.
1. Overview of the Bobcat 853 Skid-Steer Loader
The Bobcat 853, known for its durability and power, is one of the older models in the Bobcat lineup but continues to be a favorite due to its solid performance in various working conditions. It features:

• A reliable diesel engine, providing substantial power to handle heavy-duty tasks.
  
• A radial lift arm design, which offers excellent lifting and reaching capabilities.
  
• Compact dimensions, allowing for maneuverability in tight spaces.
  

Despite being an older model, the Bobcat 853 remains an essential piece of equipment for small to medium-sized operations, especially where versatility is key.
2. Common Problems with Bobcat 853
Like all machinery, the Bobcat 853 can experience problems that may affect its functionality. Some of the most common issues that users face with this skid-steer loader include:
A. Hydraulic System Issues
One of the primary systems that can cause problems on the Bobcat 853 is the hydraulic system. Hydraulic failures can result in a loss of lifting power, slow response times, or complete failure to operate the loader’s arms and bucket.
Common hydraulic issues include:

• Low hydraulic pressure – This can be caused by a lack of fluid or a faulty pump.
  
• Leaking hydraulic hoses or connections – Regular inspection of hoses and connections is essential to avoid fluid loss.
  
• Clogged filters – Over time, filters can become clogged with debris, leading to restricted fluid flow.
  

Solution: Always check the hydraulic fluid levels and inspect hoses for leaks. If the system is slow or unresponsive, consider replacing the filters or performing a complete hydraulic system flush.
B. Engine Performance Problems
The engine is the heart of the Bobcat 853, and engine performance issues can severely impact the loader’s capabilities. Some common problems include:

• Hard starting – The engine may be difficult to start, especially in cold weather, due to issues with the fuel system or starter motor.
  
• Loss of power – A clogged air filter, fuel filter, or malfunctioning injectors can reduce engine power, leading to poor performance during operation.
  
• Overheating – If the cooling system is not functioning properly, the engine can overheat, resulting in potential damage.
  

Solution: Check the air and fuel filters regularly, replace them as needed, and ensure the cooling system is free from obstructions. For hard starting, inspect the battery, fuel lines, and starter motor.
C. Electrical Issues
Electrical problems can also occur with the Bobcat 853, particularly with the starting system or electrical wiring. Some common electrical issues include:

• Faulty alternator – If the alternator is not charging the battery properly, the loader may struggle to start or experience intermittent electrical power loss.
  
• Wiring damage – Due to the heavy use of the loader, wires and connections can become damaged, resulting in poor electrical conductivity.
  

Solution: Inspect the alternator and battery, and check the electrical connections for any signs of wear or damage. If needed, replace the alternator or faulty wiring.
D. Drive System Problems
The drive system is responsible for powering the wheels and ensuring proper movement of the skid-steer loader. Problems with the drive system can make the machine difficult to control or lead to a complete failure of movement.
Some common drive system issues include:

• Worn-out drive belts – Over time, the belts that drive the wheels can wear out and become loose, leading to loss of movement or excessive slippage.
  
• Faulty drive motors – If the drive motors are malfunctioning, the loader may not move as expected, or it may struggle to climb inclines.
  

Solution: Regularly check and replace worn drive belts. If the drive motors are suspected to be at fault, consider having them inspected or replaced by a professional.
3. Preventive Maintenance Tips for Bobcat 853
To avoid these common problems and ensure your Bobcat 853 runs efficiently, regular preventive maintenance is essential. Here are some maintenance tips:
A. Fluid Checks and Changes

• Regularly check hydraulic fluid levels, engine oil, and coolant. Low fluid levels can lead to various mechanical issues, so make sure to top off fluids as needed.
  
• Change the hydraulic fluid and filters at recommended intervals to prevent buildup and ensure smooth operation.
  

B. Tire and Track Inspection

• Regularly inspect the tires or tracks for wear and tear. Properly inflated tires or well-maintained tracks ensure smooth operation and prevent strain on the drivetrain.
  
• For rubber-tracked models, check for any cracks or punctures in the tracks that could compromise their effectiveness.
  

C. Air and Fuel Filter Maintenance

• Clogged filters can cause engine performance issues, so it’s essential to clean or replace air and fuel filters at regular intervals.
  
• Replace any filters that show signs of excessive wear or debris buildup.
  

D. Regular Cleaning

• After each use, clean the loader thoroughly to remove dirt, debris, and grime that can clog filters and affect the machine’s performance.
  
• Pay attention to areas where dirt can accumulate, such as around the radiator, air intake, and exhaust systems.
  

4. Troubleshooting the Bobcat 853
If you are experiencing issues with your Bobcat 853, here’s a basic troubleshooting guide:
A. Loss of Power or Slow Response

• Check the hydraulic fluid levels and ensure there are no leaks.
  
• Inspect the filters for clogs or buildup.
  
• Examine the engine air and fuel filters for any signs of restriction.
  

B. Electrical System Failures

• Test the alternator and inspect the wiring for damage.
  
• Ensure the battery is fully charged and the connections are clean and tight.
  

C. Engine Overheating

• Verify the coolant levels and ensure the radiator is free from obstructions.
  
• Clean the radiator fins and inspect the thermostat for proper operation.
  

D. Drive System Issues

• Inspect the drive belts for wear or damage.
  
• Check the drive motors for proper function and replace if necessary.
  

5. Conclusion
The Bobcat 853 is a powerful and reliable skid-steer loader, but like any piece of heavy machinery, it requires regular maintenance and occasional troubleshooting. By understanding common problems and following preventive maintenance practices, operators can ensure the longevity and efficiency of their Bobcat 853. Whether dealing with hydraulic system issues, electrical faults, or engine performance problems, a proactive approach to maintenance can help keep the machine in top condition and minimize downtime.
With proper care and attention, the Bobcat 853 can continue to perform reliably for years to come, making it a valuable asset for construction, landscaping, and other industries.