Getting My Bobcat 753 Running Again: Troubleshooting and Solutions

[MikePhua]

Introduction: Reviving a Bobcat 753 Skid Steer
The Bobcat 753 is a reliable and versatile skid steer loader, often used in various construction, landscaping, and agricultural tasks. However, like all machines, it may face issues that prevent it from starting or running efficiently. This article covers common issues faced when trying to get a Bobcat 753 running again, troubleshooting steps, and potential solutions to get it back in working condition.
Common Issues When Restarting a Bobcat 753
Several issues can cause the Bobcat 753 to fail to start or run smoothly. Some of the most frequent causes include:

1. Battery Problems
   One of the most common issues with skid steers that won’t start is a weak or dead battery. The Bobcat 753 requires a strong battery to provide enough power to start the engine. Over time, the battery can lose its charge or fail completely.
   
2. Fuel System Issues
   If the fuel system is clogged or malfunctioning, the engine will have difficulty starting. Problems such as a clogged fuel filter, fuel pump failure, or air in the fuel lines can all lead to poor performance or no start conditions.
   
3. Hydraulic System Problems
   The Bobcat 753’s hydraulic system plays a crucial role in lifting and operating attachments. If the hydraulic fluid levels are low or there’s an issue with the hydraulic pump, the machine might not function properly, affecting both startup and operation.
   
4. Electrical System Failures
   A malfunction in the electrical system, such as a blown fuse, faulty starter, or damaged wiring, can prevent the engine from starting or cause it to stall once running.
   

Step-by-Step Troubleshooting

1. Check the Battery
   Start by checking the battery. Ensure it’s charged and in good condition. If the battery voltage is low, either recharge it or replace it with a new one. Also, inspect the battery terminals for corrosion or loose connections, which can prevent the proper flow of electricity.
   
2. Inspect the Fuel System
   If the battery is fine, move on to the fuel system. Begin by checking the fuel level and ensuring that there’s no water in the fuel tank. Water can enter the fuel system through condensation or leaks, causing issues with combustion. Check the fuel filter for clogs or debris, and replace it if necessary. If the fuel system appears clean, check the fuel pump and fuel lines for leaks or damage.
   
3. Examine the Hydraulic System
   If the engine cranks but doesn’t operate correctly, or if there’s an issue with lifting and operating attachments, it’s worth checking the hydraulic system. Start by checking the hydraulic fluid levels. Low levels can cause a range of issues, including improper function of the machine’s arms and attachments. If the hydraulic fluid is low, refill it with the correct type of hydraulic fluid. Additionally, inspect the hydraulic pump for any visible damage.
   
4. Inspect the Electrical System
   If the Bobcat 753 still isn’t running properly, the next step is to examine the electrical system. Start by checking the fuses and relays. A blown fuse could be the culprit behind electrical failure. Also, inspect the starter motor for signs of wear, and test the wiring connections to ensure everything is securely attached. If you find any faulty wiring or damaged connectors, repair or replace them as needed.
   
5. Look for Fault Codes
   Many modern Bobcat machines are equipped with diagnostic systems that can show fault codes. If your Bobcat 753 is equipped with this feature, use a diagnostic tool to check for error codes, which can give you a clearer picture of what’s wrong with the machine. These codes can often point to specific components that need repair or replacement.
   

Common Problems and Solutions

1. Weak or Dead Battery
   If the battery is weak or dead, replacing it with a fully charged, properly-sized battery will often resolve the issue. Make sure the battery is rated for your Bobcat 753 model and that the connections are clean and tight.
   
2. Clogged Fuel Filter
   A clogged fuel filter is a common cause of starting issues. Replace the fuel filter if it’s old or clogged, and ensure that the fuel lines are free of debris.
   
3. Hydraulic Fluid Leaks
   Hydraulic fluid leaks can significantly affect the performance of the Bobcat 753. If you notice any leaks, inspect the hydraulic hoses and connections for cracks or loose fittings. Replace or tighten any damaged parts as needed. Be sure to top off the hydraulic fluid after repairs.
   
4. Faulty Electrical Components
   If you suspect an electrical issue, check the fuses and relays, which are often the cause of electrical failure. If the starter motor is faulty, it may need to be repaired or replaced. Testing the entire electrical system will help identify whether the problem lies with the battery, wiring, or components like the starter or alternator.
   

Preventive Measures to Avoid Future Issues

1. Regular Maintenance
   Regular maintenance is key to keeping your Bobcat 753 running smoothly. This includes routine checks of the battery, fuel system, hydraulic system, and electrical system. Regularly change the fuel filter and hydraulic fluid, and clean the battery terminals to prevent corrosion.
   
2. Keep the Fuel System Clean
   Clean fuel is essential for proper engine operation. Always use clean, high-quality fuel and store it properly to prevent contamination. Clean the fuel tank periodically and replace the fuel filter as per the maintenance schedule.
   
3. Monitor Hydraulic Fluid Levels
   Make it a habit to regularly check the hydraulic fluid levels and inspect the hydraulic system for leaks. Low fluid levels can cause the machine to operate inefficiently or fail altogether.
   
4. Use the Machine Properly
   Overloading the Bobcat 753 or using it in extreme conditions can lead to premature wear on components. Always operate the machine within its recommended limits and avoid overburdening it with excessive weight or force.
   

Conclusion: Keeping the Bobcat 753 in Top Condition
Getting your Bobcat 753 back in working order requires a thorough examination of the battery, fuel system, hydraulic system, and electrical components. By following the troubleshooting steps and replacing worn or damaged parts, you can resolve common issues and restore the machine’s performance. Regular maintenance and proper operation will help extend the life of your skid steer, ensuring it continues to serve you effectively in the long term.