Gehl Skid Steer Brake Troubleshooting and Maintenance

[MikePhua]

Introduction to Gehl Skid Steers and Their Brake Systems
Gehl skid steer loaders are widely recognized for their durability, versatility, and ease of use. These machines are popular in construction, landscaping, and agriculture for tasks such as digging, lifting, and material handling. Like other heavy machinery, Gehl skid steers come with complex hydraulic and braking systems that require regular attention to ensure safe and efficient operation.
A common problem many operators encounter is related to the brake system. Brake issues in skid steers can range from minor inconveniences, such as a soft brake pedal, to more severe problems like total brake failure. Understanding the common causes of brake issues and knowing how to troubleshoot and repair them is essential for anyone who relies on a Gehl skid steer for daily work.
In this article, we’ll examine the typical brake-related issues with Gehl skid steers, provide a comprehensive guide on how to diagnose and fix common problems, and offer preventative maintenance tips to ensure your brake system remains in top shape.
1. Gehl Skid Steer Brake System Overview
Gehl skid steers typically feature hydraulic braking systems that provide stopping power by using the machine’s hydraulic circuits to apply pressure to the brake components. The system is designed to be responsive and efficient, helping to bring the machine to a stop quickly when needed.
There are two main types of brake systems used in Gehl skid steers:

• Hydraulic Disc Brakes: Common in many modern models, these brakes use hydraulic fluid to push pistons that apply pressure to brake discs.
  
• Wet Disc Brakes: Found in some older models, these brakes are immersed in oil, which helps to cool and lubricate the brake system during use.
  

Both systems rely heavily on the hydraulic system, and any issues in the hydraulic lines, fluid, or components can directly affect braking performance.
2. Common Brake Issues in Gehl Skid Steers
While Gehl skid steers are known for their reliability, brake issues can still arise over time, especially with heavy usage. Below are the most common brake-related problems that operators face.
2.1 Soft or Spongy Brake Pedal

• Cause: A soft brake pedal can be caused by air trapped in the hydraulic lines or low hydraulic fluid levels. Air in the lines can prevent the brakes from engaging fully, while low fluid can reduce the overall hydraulic pressure.
  
• Solution: To resolve this issue, first check the hydraulic fluid levels and top up if necessary. If the fluid levels are correct, bleed the brakes to remove any trapped air from the system. This can typically be done by opening the brake bleeder valves and allowing the air to escape while keeping the brake pedal pressed.
  

2.2 Uneven Braking or Pulling to One Side

• Cause: This can occur when the brake components are unevenly worn, or when one side of the hydraulic system is not functioning properly. It could also be due to a blocked or faulty brake line that is preventing fluid from reaching one of the brakes.
  
• Solution: Inspect the brake components on both sides for signs of uneven wear. If the brake pads or discs are worn unevenly, they should be replaced. Check for any blockages in the brake lines and clean them if necessary. It’s also important to inspect the hydraulic system to ensure both sides are receiving the proper fluid pressure.
  

2.3 Complete Brake Failure

• Cause: Brake failure can occur for a variety of reasons, including total loss of hydraulic pressure, damaged brake lines, or worn-out brake discs and pads. In severe cases, the brake system’s hydraulic pump may fail, leading to a loss of braking power.
  
• Solution: If the brakes have completely failed, the first step is to check the hydraulic system for any leaks or damage. Inspect the brake lines, hoses, and cylinders for signs of wear or rupture. If there’s no hydraulic pressure, it may be necessary to replace the hydraulic pump or fix the related components. Additionally, check the brake discs and pads for excessive wear, and replace them as needed.
  

2.4 Brake Fluid Contamination

• Cause: Brake fluid contamination can be caused by dirt, moisture, or other foreign substances entering the hydraulic system. This can lead to reduced braking efficiency, as contaminants can affect the fluid’s ability to transfer pressure effectively.
  
• Solution: Regularly inspect the brake fluid for any signs of contamination. If the fluid appears dirty or discolored, flush the system and replace the old fluid with fresh, clean hydraulic fluid. It’s important to use the correct type of fluid as specified in the operator’s manual to avoid damaging the hydraulic system.
  

3. Troubleshooting Gehl Skid Steer Brake Problems
If you encounter any of the above issues with your Gehl skid steer, follow these troubleshooting steps:

1. Check Hydraulic Fluid Levels: Low fluid is often the culprit behind soft or ineffective brakes. Make sure the fluid is at the correct level and top it off if necessary.
   
2. Bleed the Brakes: If you suspect air in the hydraulic lines, use the brake bleeder valves to remove the air. This will help restore the correct braking pressure.
   
3. Inspect Brake Components: Look for any signs of wear or damage on the brake pads, discs, and hoses. Replace any parts that show excessive wear or signs of damage.
   
4. Inspect Hydraulic System: Check for leaks in the brake lines or any issues with the hydraulic pump. If the pump is damaged or not functioning properly, it may need to be replaced.
   
5. Flush and Replace Brake Fluid: Contaminated fluid can cause poor braking performance. Flush the system and replace the fluid if it looks dirty or contaminated.
   

4. Preventative Maintenance for the Brake System
To minimize the risk of brake problems and ensure the longevity of the system, it’s important to perform regular maintenance on the Gehl skid steer’s brake system. Here are a few key maintenance tips:

• Regularly Check Fluid Levels: Keep the brake fluid topped off to ensure proper braking power. Low fluid can lead to inefficient braking and potential brake failure.
  
• Replace Brake Pads and Discs When Worn: Monitor the wear on the brake pads and discs. If they appear worn or damaged, replace them before they compromise braking performance.
  
• Inspect Brake Lines and Hoses: Look for any cracks, wear, or leaks in the brake lines and hoses. Replace any damaged components to prevent hydraulic issues.
  
• Flush the Hydraulic System: Periodically flush the hydraulic system to remove dirt and moisture that could contaminate the brake fluid. This will help maintain the fluid’s effectiveness and extend the life of the hydraulic components.
  
• Test the Brakes Regularly: Perform routine brake tests to ensure that the system is functioning correctly. Listen for any unusual noises and check for any signs of pulling or uneven braking.
  

5. Conclusion
The braking system is one of the most critical components of any Gehl skid steer, as it directly affects the safety and efficiency of the machine. Brake issues, such as soft pedals, pulling to one side, or total brake failure, are common but can often be resolved with proper troubleshooting and maintenance. By regularly checking hydraulic fluid levels, inspecting brake components, and replacing worn-out parts, operators can prevent many common brake problems and keep their Gehl skid steers running smoothly.
With regular maintenance and attention to detail, you can ensure that your Gehl skid steer continues to perform safely and efficiently, reducing downtime and increasing productivity on the job site.