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The Gehl 6635, powered by the Deutz engine, is a robust skid steer loader that has made its mark in the construction and agricultural industries. Known for its reliability, durability, and high performance, this machine is ideal for various applications, from lifting and hauling to material handling in tight spaces. Despite its reputation for toughness, the Gehl 6635, like any piece of heavy equipment, can experience its share of mechanical issues. Understanding the common problems, troubleshooting techniques, and maintenance practices can help keep your Gehl 6635 running smoothly.
Understanding the Gehl 6635 and Deutz Engine
The Gehl 6635 is a part of the company’s skid steer loader lineup, designed to provide high lifting capacities and maneuverability. The skid steer is equipped with a Deutz engine, which is widely recognized for its reliability and fuel efficiency. Deutz engines, particularly the smaller, air-cooled models, have gained a reputation for their longevity and ability to operate efficiently in demanding conditions.
Skid steers like the Gehl 6635 are used in various industries, including construction, landscaping, and agriculture, due to their compact size, ease of operation, and versatility. These machines often handle tasks such as digging, grading, lifting, and transporting materials, often in confined spaces where larger machines would struggle.
Common Issues with Gehl 6635 and Deutz Engines
While the Gehl 6635 and its Deutz engine are built to last, several common issues can arise over time, especially with heavy usage. Here’s a look at some of the most frequent problems faced by operators and how to address them.
Proper maintenance is essential to keep your Gehl 6635 and its Deutz engine running smoothly. Here are some troubleshooting and maintenance tips to address the common issues mentioned earlier:
A landscaping company in Arizona experienced issues with their Gehl 6635 skid steer, particularly with engine overheating during long hours of operation in hot weather. The company first cleaned the radiator, which was clogged with dirt and debris. After addressing the radiator issue, the machine ran cooler, and the overheating problem was resolved.
In another case, a contractor had trouble with their Deutz engine not starting in cold weather. After inspecting the glow plugs, they found that one of them was faulty. Replacing the glow plug solved the issue, and the machine started reliably even in freezing temperatures.
Conclusion: Keeping Your Gehl 6635 in Top Condition
The Gehl 6635 with a Deutz engine is a powerful, reliable machine, but like any piece of heavy equipment, it requires proper care and attention to ensure long-lasting performance. Regular maintenance, such as checking fluids, inspecting filters, and keeping the hydraulic and cooling systems clean, can prevent most common issues.
By staying on top of maintenance and addressing any problems promptly, operators can ensure that their Gehl 6635 continues to deliver exceptional performance and reliability, reducing downtime and improving productivity on the job. Whether you’re using it for construction, agriculture, or other tasks, a well-maintained Gehl 6635 is sure to provide years of service.
Understanding the Gehl 6635 and Deutz Engine
The Gehl 6635 is a part of the company’s skid steer loader lineup, designed to provide high lifting capacities and maneuverability. The skid steer is equipped with a Deutz engine, which is widely recognized for its reliability and fuel efficiency. Deutz engines, particularly the smaller, air-cooled models, have gained a reputation for their longevity and ability to operate efficiently in demanding conditions.
Skid steers like the Gehl 6635 are used in various industries, including construction, landscaping, and agriculture, due to their compact size, ease of operation, and versatility. These machines often handle tasks such as digging, grading, lifting, and transporting materials, often in confined spaces where larger machines would struggle.
Common Issues with Gehl 6635 and Deutz Engines
While the Gehl 6635 and its Deutz engine are built to last, several common issues can arise over time, especially with heavy usage. Here’s a look at some of the most frequent problems faced by operators and how to address them.
- Starting Issues
One of the more frustrating issues experienced by Gehl 6635 owners is trouble starting the machine, particularly in cold weather. Deutz engines, while known for their reliability, can sometimes be difficult to start due to fuel system problems or electrical failures. Common causes include:- Battery issues: A weak or failing battery is often the primary cause of starting problems. Ensure the battery is fully charged, and check for corrosion on the terminals.
- Fuel delivery problems: If the fuel filter is clogged, the engine may not receive enough fuel to start. Replace the fuel filter if necessary.
- Glow plug failure: Deutz engines use glow plugs to help with cold starts. A faulty glow plug can make starting difficult, particularly in lower temperatures.
- Battery issues: A weak or failing battery is often the primary cause of starting problems. Ensure the battery is fully charged, and check for corrosion on the terminals.
- Engine Overheating
Engine overheating can be a serious issue, especially in high-demand operations. If the engine temperature rises too high, it can lead to significant damage. The Deutz engine is designed to handle tough conditions, but prolonged overheating can cause issues like blown head gaskets or even engine failure.- Radiator problems: The radiator may become clogged with debris, restricting airflow and causing the engine to overheat. Regularly clean the radiator and ensure that it’s free from dirt and debris.
- Cooling system issues: A malfunctioning thermostat or water pump can cause inadequate coolant circulation. Regular checks of the cooling system components can prevent overheating issues.
- Radiator problems: The radiator may become clogged with debris, restricting airflow and causing the engine to overheat. Regularly clean the radiator and ensure that it’s free from dirt and debris.
- Hydraulic System Failures
As with most skid steer loaders, the Gehl 6635’s hydraulic system is essential for its operation. If the hydraulics fail, the machine will struggle to perform basic tasks like lifting or tilting the bucket.- Hydraulic fluid leaks: Leaking hydraulic hoses or seals can reduce pressure in the system, leading to sluggish or unresponsive hydraulics. Regularly inspect the hydraulic lines and seals for any signs of leaks.
- Contaminated hydraulic fluid: Over time, hydraulic fluid can become contaminated with dirt, water, or debris, affecting its performance. Change the hydraulic fluid regularly and ensure it meets the manufacturer’s specifications.
- Hydraulic fluid leaks: Leaking hydraulic hoses or seals can reduce pressure in the system, leading to sluggish or unresponsive hydraulics. Regularly inspect the hydraulic lines and seals for any signs of leaks.
- Transmission Problems
Transmission issues in the Gehl 6635 can result in a loss of power, making it difficult to move the machine or use attachments effectively. Common transmission problems include:- Slipping gears: If the gears are slipping, the machine may lose power when trying to accelerate. This could be a result of low fluid levels or worn-out transmission components.
- Shifting problems: Difficulty in shifting gears may be caused by a malfunctioning linkage or worn-out internal components. If the transmission is not shifting properly, it’s important to have it inspected and repaired as soon as possible to avoid further damage.
- Slipping gears: If the gears are slipping, the machine may lose power when trying to accelerate. This could be a result of low fluid levels or worn-out transmission components.
- Electrical System Issues
Electrical problems can manifest in various ways, from the machine not starting to certain features or attachments not working correctly. The electrical system in the Gehl 6635 is complex, and issues can arise from:- Wiring issues: Worn or damaged wiring can cause shorts, leading to system failures. Inspect the wiring for frays or corrosion, especially in high-stress areas.
- Alternator or voltage regulator failure: If the alternator isn’t charging the battery properly, the machine may lose power or fail to start. Check the alternator’s output and replace it if necessary.
- Wiring issues: Worn or damaged wiring can cause shorts, leading to system failures. Inspect the wiring for frays or corrosion, especially in high-stress areas.
Proper maintenance is essential to keep your Gehl 6635 and its Deutz engine running smoothly. Here are some troubleshooting and maintenance tips to address the common issues mentioned earlier:
- Regular Fluid Checks
Routine checks of the engine oil, hydraulic fluid, and coolant levels are essential for preventing many of the issues associated with overheating, starting problems, and hydraulic system failures. Ensure the fluids are topped off and replaced according to the manufacturer’s recommendations.
- Proper Battery Maintenance
Battery failure is a common cause of starting issues. To prevent this, clean the battery terminals regularly, check for signs of corrosion, and ensure the battery is securely mounted. If the battery is more than three years old, it may be time to replace it.
- Inspecting and Replacing Filters
The fuel, air, and hydraulic filters play a vital role in the performance of the Gehl 6635. Clogged filters can restrict airflow or fuel delivery, leading to engine performance issues. Replace the filters regularly as part of routine maintenance.
- Checking for Leaks
Regularly inspect the hydraulic lines, engine gaskets, and seals for signs of leaks. Leaks can lead to power loss and damage to other components if not addressed promptly. Use hydraulic fluid that is compatible with the machine’s specifications and always clean up any spills to prevent contamination.
- Engine Cooling System Maintenance
Overheating can be caused by a malfunctioning cooling system. Clean the radiator and ensure that there are no blockages in the airflow. Additionally, inspect the thermostat and water pump to make sure they are functioning properly.
- Transmission Maintenance
To prevent transmission issues, ensure that the fluid is topped off and that the gearshift operates smoothly. If the machine experiences slipping or difficulty shifting, check for low fluid levels, or consider having the transmission inspected by a professional.
A landscaping company in Arizona experienced issues with their Gehl 6635 skid steer, particularly with engine overheating during long hours of operation in hot weather. The company first cleaned the radiator, which was clogged with dirt and debris. After addressing the radiator issue, the machine ran cooler, and the overheating problem was resolved.
In another case, a contractor had trouble with their Deutz engine not starting in cold weather. After inspecting the glow plugs, they found that one of them was faulty. Replacing the glow plug solved the issue, and the machine started reliably even in freezing temperatures.
Conclusion: Keeping Your Gehl 6635 in Top Condition
The Gehl 6635 with a Deutz engine is a powerful, reliable machine, but like any piece of heavy equipment, it requires proper care and attention to ensure long-lasting performance. Regular maintenance, such as checking fluids, inspecting filters, and keeping the hydraulic and cooling systems clean, can prevent most common issues.
By staying on top of maintenance and addressing any problems promptly, operators can ensure that their Gehl 6635 continues to deliver exceptional performance and reliability, reducing downtime and improving productivity on the job. Whether you’re using it for construction, agriculture, or other tasks, a well-maintained Gehl 6635 is sure to provide years of service.
