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The Bobcat S185 is a popular skid-steer loader used across various industries, known for its reliable performance and powerful hydraulics. However, some operators have faced challenges with the machine's SJC (Standard Joystick Control) system. In this article, we will dive into the issues surrounding the S185’s SJC controls, how to identify common problems, and provide troubleshooting tips to keep your machine running smoothly.
What Are SJC Controls?
SJC controls in Bobcat machines refer to the joysticks that manage all the hydraulic functions, including movement, lifting, and auxiliary hydraulics. These controls are responsible for the smooth and precise operation of the loader. The Bobcat S185 uses the SJC system, which allows for easy handling with a two-joystick design. The left joystick controls the movement of the loader (forward, backward, and turning), while the right joystick controls the boom and auxiliary functions.
Common Issues with S185 SJC Controls
The Bobcat S185 SJC controls are crucial for smooth operation and efficient handling of the machine. If you experience issues like unresponsive joysticks, sticking controls, or hydraulic power loss, it’s important to troubleshoot the system carefully. By addressing potential hydraulic fluid issues, inspecting the joystick mechanism, and ensuring all electrical connections are in good condition, operators can resolve most control-related problems. Regular maintenance and timely repairs will also keep the machine operating at peak performance, ensuring that you can complete your tasks with ease.
What Are SJC Controls?
SJC controls in Bobcat machines refer to the joysticks that manage all the hydraulic functions, including movement, lifting, and auxiliary hydraulics. These controls are responsible for the smooth and precise operation of the loader. The Bobcat S185 uses the SJC system, which allows for easy handling with a two-joystick design. The left joystick controls the movement of the loader (forward, backward, and turning), while the right joystick controls the boom and auxiliary functions.
Common Issues with S185 SJC Controls
- Unresponsive Joysticks
One of the most commonly reported issues with the S185’s SJC controls is that the joysticks become unresponsive or sluggish. This can result from a variety of factors, including hydraulic fluid issues, worn-out components, or electrical problems in the joystick assembly. In some cases, the joystick might not fully return to the neutral position, which causes erratic behavior during operation.
- Intermittent or Sticking Controls
Operators have reported that the joysticks may sometimes stick, or their response may be intermittent. This can make the loader difficult to operate, as precise control over the loader’s movement and boom is essential for tasks like grading or lifting heavy materials. Sticking controls often result from dirt and debris getting trapped inside the joystick mechanism or issues with the electrical connections.
- Hydraulic Power Loss
A significant issue with the S185’s SJC controls can also involve hydraulic power loss, which prevents the loader from functioning correctly. The machine may fail to lift, tilt, or even drive properly. A loss of hydraulic power can be linked to low fluid levels, air in the system, or faulty pumps.
- Check for Hydraulic Fluid Issues
If you’re experiencing unresponsive or sluggish joystick movement, the first step is to check the hydraulic fluid levels. Low fluid can cause the system to underperform, leading to problems with control response. Also, check for signs of leaks or contamination in the hydraulic lines, as these can contribute to power loss or erratic behavior.
Solution: Top up the hydraulic fluid or replace any damaged lines. Ensure that the hydraulic fluid is clean and free from contaminants. If you suspect the fluid is contaminated, replace it with fresh fluid as recommended by Bobcat.
- Inspect the Joystick Assembly
If the issue persists, inspect the joystick assembly itself. Dirt, grime, or moisture inside the joystick can cause the controls to become sticky or unresponsive. Additionally, worn-out components inside the joystick could lead to erratic movement or failure to return to the neutral position.
Solution: Clean the joystick and its housing, removing any dirt or moisture. Check for worn-out parts such as the springs, pivots, or seals. If necessary, replace the joystick assembly or individual components.
- Check Electrical Connections and Fuses
A malfunction in the SJC controls might also be traced to electrical problems. Loose or corroded electrical connections can disrupt the signals between the joysticks and the hydraulic system. In some cases, blown fuses or damaged wiring can also result in intermittent control issues.
Solution: Inspect all wiring harnesses connected to the joystick control system. Look for any loose, corroded, or damaged connections. Ensure that all fuses are intact and functioning properly. Replace any faulty components as needed.
- Test the Auxiliary Hydraulics System
Sometimes, the issue can be isolated to the auxiliary hydraulics, which could cause specific functions like boom lifting or tilt to malfunction. Testing the auxiliary system can help identify whether the issue lies with the SJC controls or the hydraulic functions themselves.
Solution: Engage the auxiliary hydraulics while operating the machine and check if they are working as expected. If the auxiliary functions are weak or non-responsive, it may be due to issues within the auxiliary circuit, such as a clogged valve, bad hoses, or a malfunctioning pump.
- Regular Fluid Changes
Keep the hydraulic fluid clean by performing regular oil changes and using the right type of fluid recommended by the manufacturer. This will help prevent the system from clogging or getting contaminated, ensuring smooth joystick movement and consistent performance.
- Clean the Joystick Mechanism
Regularly clean the joystick area to remove dirt, dust, and moisture. Keeping the joystick mechanism clean helps prevent sticky controls and extends the life of the system.
- Check for Leaks Regularly
Hydraulic leaks can significantly impact the performance of your SJC controls. Periodically check the hoses, fittings, and seals for any signs of leaks. Promptly address any leakage issues to maintain hydraulic pressure and prevent performance problems.
- Inspect Wiring and Connections
Over time, wiring and connectors can wear out due to constant use. Inspect the wiring harness for any signs of wear or damage, and clean any corrosion off the connectors. Tighten any loose connections and replace any worn-out wires or connectors.
The Bobcat S185 SJC controls are crucial for smooth operation and efficient handling of the machine. If you experience issues like unresponsive joysticks, sticking controls, or hydraulic power loss, it’s important to troubleshoot the system carefully. By addressing potential hydraulic fluid issues, inspecting the joystick mechanism, and ensuring all electrical connections are in good condition, operators can resolve most control-related problems. Regular maintenance and timely repairs will also keep the machine operating at peak performance, ensuring that you can complete your tasks with ease.
