Troubleshooting Tip: Komatsu Excavator Hydraulic Hose Leak

Problem: A common issue with Komatsu excavators, such as the PC200 series, is a leak in one of the hydraulic hoses, often near the arm or bucket cylinders. This can lead to a loss of hydraulic pressure and reduced machine performance.

Solution:

1. Identify the Leak: Carefully inspect all hydraulic hoses for signs of leaks, such as oil drips or wet spots. Pay close attention to hose connections and areas where the hose might be rubbing against other components.

2. Depressurize the System: Before attempting any repairs, ensure the hydraulic system is fully depressurized. Consult your Komatsu service manual for the correct procedure.

3. Replace the Damaged Hose: Once the system is depressurized, remove the damaged hose. Ensure you have the correct replacement hose with the same length, diameter, and fittings (e.g., Hose 07260-08732 for certain PC200 models).

4. Install the New Hose: Carefully install the new hose, ensuring all connections are tightened to the correct torque specifications.

5. Refill Hydraulic Fluid: Check the hydraulic fluid level and refill as needed with the recommended type of fluid.

6. Bleed the System: Bleed any air from the hydraulic system following the procedure in your service manual.

7. Test the Machine: Start the excavator and operate all hydraulic functions to check for any remaining leaks and ensure proper operation.

Regular inspection of hydraulic hoses is crucial for preventing unexpected downtime. Contact Growshine International for high-quality replacement hydraulic hoses for your Komatsu excavator.