FF12 Mini Excavator Stopped Rotating After Being Washed: Troubleshooting Guide

[MikePhua]

If your FF12 mini excavator has stopped rotating after washing, you're not alone. This is a relatively common issue that can occur due to a few potential causes. Whether it’s a simple mistake or something more technical, this guide will help you understand the possible reasons and offer troubleshooting tips to get your machine back in action.
1. The Problem: Rotation Stopped After Washing
After washing the excavator, the rotation of the machine has stopped, which suggests an issue with the rotation drive or hydraulic system. This problem might seem concerning, but it is usually caused by something that can be fixed with a bit of investigation.
2. Possible Causes
Here are some common reasons why your mini excavator might have stopped rotating after washing:

• Hydraulic Fluid Contamination: Washing the excavator can sometimes lead to water getting into sensitive parts of the machine, including the hydraulic system. If water enters the hydraulic lines or reservoir, it can affect the performance of the hydraulic pump or motor responsible for the rotation.
  
• Electrical Issues: Water may have gotten into electrical components such as the rotation motor wiring or sensors. Moisture in the electrical system can cause short circuits or poor connections, leading to malfunction.
  
• Hydraulic Valve Issues: A clogged or malfunctioning hydraulic valve can prevent the rotation motor from receiving the correct flow of hydraulic fluid. If water has caused rust or debris inside the valve, it may block the fluid flow, preventing rotation.
  
• Loose or Disconnected Components: Sometimes, during washing or cleaning, certain connections may loosen or disconnect without being noticed. A loose hydraulic hose or electrical connection could be the cause of the failure.
  

3. Troubleshooting Steps
Follow these steps to troubleshoot and potentially fix the issue:

• Step 1: Inspect the Hydraulic System
  • Start by checking the hydraulic fluid levels and condition. If the fluid looks dirty or has signs of water contamination, drain and replace it with fresh hydraulic fluid.
    
  • Check the hydraulic hoses and connections for any visible signs of leaks or damage.
    
  • Inspect the rotation motor to see if there is any visible rust or moisture accumulation. If so, dry the motor and its connections thoroughly.
    
• Step 2: Check the Electrical Connections
  • Inspect all electrical wiring related to the rotation system. Look for any signs of corrosion, moisture, or loose connections.
    
  • If moisture has gotten into connectors, use a contact cleaner to dry them and remove any corrosion.
    
  • Test the relevant fuses and sensors associated with the rotation system. Replace any blown fuses or faulty sensors.
    
• Step 3: Inspect the Hydraulic Valve
  • If you suspect an issue with the hydraulic valve, consult the machine's manual for valve location and troubleshooting steps.
    
  • Look for any signs of debris or blockages within the valve system. If necessary, clean or replace the valve to ensure smooth fluid flow.
    
• Step 4: Dry the Machine
  • After washing the machine, make sure that all parts are completely dry, especially the areas around the rotation motor, electrical components, and hydraulic connections.
    
  • Consider using compressed air to blow out any moisture trapped inside the system.
    

4. If the Problem Persists
If you’ve gone through these troubleshooting steps and the rotation issue persists, it may be time to consult a professional mechanic or the manufacturer’s service team. They can help diagnose more complex issues such as internal hydraulic pump failures or motor malfunctions.
5. Preventative Measures
To avoid similar issues in the future, here are some preventative measures:

• Avoid Over-Washing: Excessive water exposure can cause moisture to seep into sensitive parts of the machine. Use water sparingly and avoid spraying directly into electrical components or the hydraulic system.
  
• Regularly Check for Moisture: After washing, always inspect the machine for signs of water ingress. Address any moisture issues immediately to prevent long-term damage.
  
• Seal Exposed Areas: Ensure that all electrical and hydraulic connections are sealed properly. Consider using waterproof covers or protective coatings in areas where water exposure is likely.
  

Conclusion
A mini excavator like the FF12 stopping its rotation after being washed is a problem that can usually be resolved with some basic troubleshooting. By checking the hydraulic system, electrical connections, and valves, you can identify and fix the issue. Regular maintenance and preventative measures can also help avoid similar issues in the future.