Gehl 5635 Skid Steer Troubleshooting and Solutions

[MikePhua]

The Gehl 5635 skid steer loader is known for its robust performance, ideal for a variety of construction, landscaping, and material handling applications. However, like any heavy machinery, it is susceptible to certain operational issues over time. One common problem that users may encounter is mechanical malfunctions or irregularities in the machine’s operation. This article will discuss some typical issues with the Gehl 5635, diagnose possible causes, and offer solutions for these problems to ensure smooth operation.

Common Issues with Gehl 5635 Skid Steer
The Gehl 5635 is designed to handle heavy loads and demanding environments. However, there are a few recurring issues reported by operators and technicians. These issues can affect the overall functionality and efficiency of the machine. Common problems include:

1. Hydraulic System Malfunctions
   One of the most frequent issues with the Gehl 5635 is problems related to the hydraulic system. Operators often experience issues with sluggish or unresponsive movement of the arms and bucket, which is usually due to low hydraulic fluid levels, leaks, or malfunctioning hydraulic pumps. The hydraulic system is essential for the operation of the boom, bucket, and other attachments, so when it falters, the whole machine becomes unreliable.
   
2. Engine Overheating
   Another common issue is engine overheating, which can be a result of poor maintenance or cooling system failures. If the engine coolant levels are too low, or if there’s a blockage in the radiator or hoses, the engine can overheat. This could lead to premature engine wear and failure if not addressed promptly.
   
3. Electrical Failures
   The electrical system of the Gehl 5635 is complex, featuring an array of sensors, wiring, and connections. Issues such as blown fuses, faulty wiring, or malfunctions in the starter or alternator can cause the machine to fail to start or experience irregular behavior during operation. A frequent problem involves a battery not charging properly, often due to a faulty alternator or a broken connection in the wiring harness.
   
4. Transmission Problems
   Transmission issues are another concern, particularly related to the machine’s ability to engage gears or move efficiently. Operators may experience slipping gears or the machine failing to shift properly, which may be caused by low fluid levels, worn transmission parts, or a malfunctioning transmission pump.
   
5. Low or Erratic Hydraulic Pressure
   Hydraulic pressure problems may stem from clogged filters or damaged pressure relief valves. If hydraulic pressure is not consistent, it can result in unresponsive movement of the loader’s arms or attachment. In severe cases, the hydraulic system could become completely ineffective, rendering the skid steer unusable until repairs are made.
   

Diagnosing Problems with the Gehl 5635
Understanding the symptoms and performing systematic checks is crucial for diagnosing problems with the Gehl 5635. Here are steps to diagnose some of the most common issues:

1. Check Hydraulic Fluid Levels and Leaks
   If the machine is sluggish or the attachments are not moving properly, the first thing to check is the hydraulic fluid levels. Low fluid levels are a common cause of hydraulic malfunctions. Ensure that the fluid is at the recommended level and inspect for any visible leaks in the hydraulic lines, hoses, or pumps.
   
2. Inspect the Cooling System
   For engine overheating, check the coolant levels and ensure there are no leaks in the radiator or coolant hoses. If the engine continues to overheat despite proper coolant levels, the radiator may need to be cleaned or replaced to improve airflow.
   
3. Electrical System Inspection
   Begin by checking the battery for proper charge and condition. If the battery is old or weak, it may fail to provide the necessary power to start the machine. Additionally, inspect the alternator to ensure it’s charging the battery properly. Faulty wiring or fuses may also cause intermittent electrical failures, so a thorough inspection of the wiring harness and fuse box is important.
   
4. Transmission Fluid Check
   Low transmission fluid levels can cause slipping or difficulty shifting gears. Check the transmission fluid levels regularly, and if the fluid appears dirty or burnt, it should be replaced. Inspect the transmission pump and related components for wear or damage.
   
5. Hydraulic Pressure Testing
   If hydraulic pressure seems low or inconsistent, a pressure gauge can be used to test the hydraulic system. If the pressure falls below specifications, check for issues like clogged filters or malfunctioning pressure relief valves.
   

Common Solutions for Gehl 5635 Problems
Once the problem is diagnosed, several solutions can address the issues with the Gehl 5635. Here’s what you can do to fix common problems:

1. Hydraulic System Repair
   If you find leaks in the hydraulic system, replace any damaged hoses, seals, or fittings. Regularly replace the hydraulic fluid and filters to maintain optimal performance. If the hydraulic pump is the issue, consider rebuilding or replacing it with a genuine Gehl part.
   
2. Cooling System Maintenance
   If the engine is overheating, flush the radiator and replace any damaged or cracked hoses. Ensure that the coolant is replaced according to the manufacturer’s recommendations, as old or contaminated coolant can contribute to overheating. If the radiator is clogged, consider using a radiator cleaning solution.
   
3. Electrical System Repairs
   For electrical failures, check the battery, alternator, and wiring for any signs of wear or corrosion. Replace any faulty fuses or wiring, and ensure that the battery terminals are clean and properly connected. If the alternator is faulty, it may need to be replaced.
   
4. Transmission Service
   If the transmission is slipping or the gears are not engaging properly, first check the transmission fluid. If the fluid is low or dirty, replace it with the correct type. If the problem persists, inspect the transmission pump and other internal components for wear or damage.
   
5. Hydraulic Pressure Adjustment
   To fix low hydraulic pressure, replace clogged filters and inspect the pressure relief valve for proper function. A qualified technician may be needed to test and adjust the system to restore full hydraulic functionality.
   

Preventative Maintenance Tips for Gehl 5635
Preventing problems before they arise is key to keeping the Gehl 5635 running efficiently. Here are some tips for preventative maintenance:

• Routine Fluid Checks: Regularly check the hydraulic, transmission, and engine oils to ensure proper levels and quality. Change fluids and filters according to the manufacturer’s schedule.
  
• Inspect the Cooling System: Clean the radiator and check coolant levels frequently, especially during hotter months when overheating can be more common.
  
• Battery Care: Inspect the battery for corrosion and ensure it holds a charge. Clean the battery terminals to ensure a good connection.
  
• Hydraulic System Care: Perform regular checks for leaks, and replace filters and fluid as needed to prevent buildup that can damage the system.
  
• Transmission Maintenance: Regularly inspect the transmission and ensure fluid is at the correct level. Any signs of unusual behavior, such as slipping or erratic shifting, should be addressed immediately to avoid further damage.
  

Conclusion
The Gehl 5635 skid steer loader is an excellent machine for various tasks, but like any heavy equipment, it requires proper maintenance to continue performing at its best. By diagnosing common issues such as hydraulic malfunctions, engine overheating, electrical failures, and transmission problems, operators can keep the machine in top condition. Regular maintenance and preventative measures can extend the life of the Gehl 5635 and avoid costly repairs. By following the guidelines provided in this article, you can troubleshoot issues efficiently and keep your Gehl skid steer running smoothly for years to come.