Troubleshooting and Maintenance Tips for Sullair 185 Air Compressors

[MikePhua]

The Sullair 185 air compressor is a widely used model in the construction and industrial sectors, valued for its reliability and powerful performance. However, like all machinery, it may occasionally experience issues that affect its operation. In this article, we’ll discuss common problems with the Sullair 185, how to troubleshoot them, and maintenance tips to keep the compressor running at its best.
Overview of the Sullair 185 Air Compressor
The Sullair 185 is a portable, diesel-powered air compressor designed to provide a reliable source of compressed air for construction, mining, and other heavy-duty applications. It is often used to power pneumatic tools like jackhammers, drills, and impact wrenches. Known for its rugged build, the Sullair 185 is typically used in harsh environments where durability and performance are critical.
Common Issues with the Sullair 185

1. Compressor Won’t Start
   One of the most common issues with the Sullair 185 is that it fails to start. This could be due to a variety of reasons, including:
   • Battery Problems: A dead or weak battery is a common culprit for a compressor that won’t start.
     
   • Fuel System Issues: Clogged fuel filters, air in the fuel system, or a malfunctioning fuel pump can prevent the engine from receiving the proper amount of fuel, making it difficult to start.
     
   • Electrical Issues: A blown fuse or faulty electrical connections could prevent the compressor from starting.
     
   Solution: Start by inspecting the battery and ensuring it is fully charged and properly connected. Check the fuel system for blockages or air, and replace any clogged filters. Also, check the electrical connections and fuses to ensure there are no shorts or blown fuses.
   
2. Excessive Oil Consumption
   Excessive oil consumption is another issue that can arise with the Sullair 185. This can be caused by:
   • Worn Engine Components: Worn piston rings or valve seals may allow oil to leak into the combustion chamber, leading to higher oil consumption.
     
   • Incorrect Oil Levels: Overfilling the compressor with oil can cause it to burn more oil than usual.
     
   Solution: Ensure that the oil level is correct and that the engine is using the right type of oil as specified by the manufacturer. If oil consumption is still high, it may indicate internal engine wear, and the compressor may need to be inspected by a professional mechanic.
   
3. Low Air Pressure
   Low air pressure can severely limit the compressor’s ability to power tools effectively. Possible causes of low air pressure include:
   • Air Filter Blockage: A clogged air filter can restrict airflow, reducing the compressor’s efficiency.
     
   • Leaking Hoses: Air leaks in the hoses or connections can cause a loss in pressure.
     
   • Compressor Valve Issues: Worn or damaged intake or exhaust valves can cause a reduction in air pressure.
     
   Solution: Check the air filter for dirt or debris and replace it if necessary. Inspect the hoses and connections for leaks and repair or replace any damaged components. If the valves are damaged, they will need to be replaced or repaired.
   
4. Overheating
   Overheating is a potential problem for any engine-powered compressor, including the Sullair 185. Common causes of overheating include:
   • Low Coolant Levels: Inadequate coolant can cause the compressor to overheat, potentially damaging the engine.
     
   • Clogged Radiator: Dirt or debris can clog the radiator and prevent the engine from cooling properly.
     
   • Overuse: Running the compressor for extended periods without proper rest can lead to overheating.
     
   Solution: Check the coolant levels and top them off if necessary. Clean the radiator regularly to prevent debris buildup. Additionally, make sure to operate the compressor within the manufacturer’s recommended usage limits to avoid overheating.
   

Maintenance Tips for the Sullair 185

1. Regular Oil Changes
   One of the most important maintenance tasks for the Sullair 185 is regular oil changes. Oil lubricates the engine, helping to reduce friction and prevent overheating. Over time, oil breaks down and becomes less effective, so it’s essential to change the oil at the intervals recommended by the manufacturer.
   
2. Replace the Air Filter
   A clean air filter is crucial for proper airflow and efficient operation of the compressor. Check the air filter regularly for dirt, debris, or damage. A clogged air filter can reduce air pressure and cause the compressor to work harder than necessary, potentially leading to premature wear.
   
3. Inspect the Fuel System
   Periodically inspect the fuel system for leaks, dirt, or air contamination. Replace fuel filters regularly to ensure the engine is receiving clean fuel. A clean fuel system is essential for smooth engine performance and reliable starting.
   
4. Check and Replace Belts
   The belts on the Sullair 185 are vital for powering various components of the compressor. Over time, these belts can wear out, leading to poor performance or even complete failure. Regularly inspect the belts for signs of wear and replace them if necessary.
   
5. Monitor the Battery
   Regularly check the battery to ensure it’s properly charged and free of corrosion. If the battery is old or weak, replace it to prevent starting issues. Clean the terminals and ensure the battery is securely mounted to prevent any electrical issues.
   
6. Keep the Compressor Clean
   Keeping the compressor clean is essential for maintaining its efficiency. Regularly clean the exterior to prevent dirt and debris from entering the engine or radiator. Also, ensure that air vents are unobstructed to allow for proper airflow.
   
7. Proper Storage
   When the compressor is not in use for an extended period, store it in a dry, well-ventilated area to prevent rust and corrosion. Before storage, run the engine for a few minutes to circulate the oil and prevent damage to the internal components.
   

Conclusion
The Sullair 185 air compressor is a reliable machine, but like all equipment, it requires regular maintenance to keep it running smoothly. By staying on top of common issues such as starting problems, oil consumption, and air pressure issues, you can ensure that your Sullair 185 operates efficiently and lasts longer. Regular maintenance tasks, such as oil changes, air filter replacements, and fuel system inspections, will help prevent many common problems and ensure your compressor is always ready for the job.