Case 1845C Skid Steer Loader: Common Issues and Troubleshooting

[MikePhua]

Overview of the Case 1845C
The Case 1845C is a versatile skid steer loader produced by Case Construction Equipment between 1985 and 2000. Renowned for its robust design and powerful performance, it features a 57-horsepower Cummins 4-390 diesel engine and a hydrostatic transmission system. With a rated operating capacity of 1,750 lbs and a tipping load of 3,545 lbs, the 1845C has been a popular choice for various construction and agricultural tasks.
Common Hydraulic and Drive System Issues
Despite its durability, the Case 1845C is not without its challenges. Several users have reported issues related to the hydraulic and drive systems:

• Hydraulic Function Irregularities: Users have observed inconsistent hydraulic operations, such as the loader arms lowering unexpectedly or the bucket failing to lift properly. These problems are often attributed to issues like air trapped in the hydraulic lines, low fluid levels, or worn-out seals in the hydraulic cylinders. For instance, one user noted that the boom and bucket would not function correctly unless the controls were moved rapidly, indicating potential internal seal failures or control valve malfunctions.
  
• Drive Motor Failures: Another common issue involves the drive motors, particularly on one side of the machine. Symptoms include weak or no movement on one side, especially after the machine warms up. This can be due to problems with the drive motors themselves, the tandem hydraulic pump, or the hydraulic lines. In some cases, users have found that replacing the drive motor did not resolve the issue, suggesting that the problem lies elsewhere in the hydraulic system.
  

Electrical and Fuel System Challenges
Beyond hydraulic and mechanical issues, the 1845C may also experience electrical and fuel system problems:

• Electrical Failures: Instances have been reported where the machine would start but then shut down unexpectedly, particularly when the throttle was adjusted. Such issues can be linked to faulty ignition switches or electrical connections. In one case, replacing the ignition switch resolved the problem, highlighting the importance of checking electrical components when troubleshooting.
  
• Fuel System Airlocks: Running out of diesel fuel can introduce air into the fuel lines, leading to starting difficulties. Users have found that bleeding the fuel system and ensuring the fuel shutoff solenoid operates correctly can alleviate this issue. It's also advisable to inspect the fuel filter for clogs, even if it was recently replaced.
  

Maintenance Tips and Recommendations
To maintain the Case 1845C in optimal condition and prevent common issues:

• Regular Hydraulic Maintenance: Check hydraulic fluid levels regularly and replace the fluid as recommended by the manufacturer. Inspect hydraulic hoses and seals for signs of wear or leaks. Bleed the hydraulic system periodically to remove air and ensure smooth operation.
  
• Drive System Care: Monitor the condition of the drive motors and hydraulic pumps. Ensure that the chain boxes are free of water or contaminants, as these can cause damage to the drive components. Adjust chain tension as needed to prevent excessive wear.
  
• Electrical System Checks: Inspect wiring and connectors for corrosion or loose connections. Test the ignition switch and other electrical components to ensure they are functioning properly.
  
• Fuel System Maintenance: Avoid running the machine out of fuel to prevent airlocks. Regularly replace fuel filters and ensure the fuel shutoff solenoid is operating correctly.
  

Conclusion
The Case 1845C skid steer loader is a reliable and powerful machine when properly maintained. By staying proactive with regular maintenance and addressing issues promptly, operators can extend the lifespan of their equipment and ensure consistent performance. Understanding common problems and their solutions is key to maximizing the utility of the 1845C in various applications.