Bobcat 753 Engine Removal: Fixing Leaks and Fan Drive Issues

[MikePhua]

The user of a Bobcat 753 skid steer loader noticed oil leaks during engine operation, as well as issues with the fan drive system, causing abnormal engine temperatures. To resolve these problems, the user decided to pull the engine and address the oil leaks and fan drive issues.
Troubleshooting and Repair Steps

1. Engine Removal
   The first step was to remove the engine to inspect the source of the oil leaks. During the teardown, the user checked various engine components, especially oil seals, gaskets, and connecting hoses, for wear or damage.
   
2. Repairing the Oil Leak
   Oil leaks are commonly caused by worn-out seals or damaged gaskets. The user discovered that the oil seal at the bottom of the engine was worn and needed replacing. Additionally, the seals on the oil lines and connections showed signs of aging, so these were replaced to prevent further leaks.
   
3. Inspecting the Fan Drive System
   The fan drive issue was traced back to a worn fan drive belt and a potentially faulty fan motor. The user checked the fan motor and drive belt, discovering the belt was loose and cracked, requiring replacement. The fan motor itself was in good condition, but the user checked the electrical connections to ensure stable power supply to the motor.
   
4. Replacing Damaged Components
   After diagnosing the issues, the user replaced the worn oil seals, gaskets, seals, and fan drive belt. They ensured that all new components were properly installed, and tightened all bolts and connections to ensure reliability.
   

Conclusion
The oil leaks and fan drive issues on the Bobcat 753 skid steer loader were caused by worn oil seals, gaskets, and the fan drive belt. By removing the engine and systematically inspecting each component, the user successfully fixed the issues. After replacing the damaged parts, the machine resumed normal operation without further oil leaks or temperature problems.