Case 75XT Fan Belt, Water Pump, Idler Pulley, and Other Components Replacement Guide

[MikePhua]

The engine components of the Case 75XT skid steer, including the fan belt, water pump, idler pulley, and alternator, play essential roles in ensuring the engine operates efficiently and the cooling system functions properly. When these parts wear out or fail, it can affect the overall performance of the machine. Below are the steps and recommendations for replacing these critical components.
Problem Description
Users have reported that their Case 75XT skid steer is experiencing issues with the fan belt, water pump, idler pulley, alternator, and other components behind the radiator and oil cooler, leading to engine overheating or insufficient power. Replacing these parts requires disassembling several larger components and may require a certain level of skill and experience.
Repair Steps

1. Remove the Fan Belt
   • Disconnect the power supply and ensure safety.
     
   • Locate and remove the fan belt. Check the condition of the belt; if there are cracks or looseness, it should be replaced.
     
   • When installing the new belt, ensure the tension is just right — neither too tight nor too loose. Over-tightening can lead to excessive wear on other components, while a loose belt can reduce transmission efficiency.
     
2. Replace the Water Pump
   • A faulty water pump typically results in high engine temperatures or coolant leakage. If the water pump is malfunctioning, it must be removed and replaced.
     
   • Remove the connecting pipes and fasteners attached to the water pump.
     
   • When installing the new water pump, ensure the gasket is intact to prevent coolant leakage.
     
   • Reconnect all water pipes, making sure the water pump is securely installed.
     
3. Inspect and Replace the Idler Pulley
   • Idler pulleys can affect the efficiency of the belt drive if they are worn, jammed, or making unusual noises.
     
   • When removing the idler pulley, be mindful of its installation direction to ensure it is placed correctly.
     
   • Install the new idler pulley, ensuring it matches the belt and operates smoothly.
     
4. Replace the Alternator
   • A faulty alternator can lead to battery charging problems, affecting the machine's performance. First, disconnect the battery to ensure electrical safety.
     
   • When removing the alternator, mark the position of the electrical connections to avoid incorrect wiring during reinstallation.
     
   • After installing the new alternator, check the voltage output to ensure it meets the machine’s requirements.
     
5. Clean and Inspect the Radiator and Oil Cooler
   • While replacing the aforementioned parts, inspect the radiator and oil cooler for any debris or blockages. The performance of the radiator and oil cooler directly affects the engine’s and hydraulic system’s cooling efficiency.
     
   • Use an air compressor to clean the exterior of the radiator and oil cooler, ensuring no debris is obstructing airflow. If there is water or oil buildup inside the radiator, thorough cleaning or replacement may be necessary.
     

Conclusion
Replacing the fan belt, water pump, idler pulley, alternator, and other components related to the radiator and oil cooler on the Case 75XT skid steer requires careful attention to detail. By systematically checking and replacing damaged parts, the machine’s performance can be restored, ensuring proper engine temperature regulation and improved efficiency. If you face difficulty performing the replacements yourself, it is recommended to contact Panswork’s professional technicians for assistance to ensure the equipment is restored to working condition.