20 10 bought the 336D Carter excavator, which has been used for 6670 hours, and the excavator has been digging at the construction site. Recently, the boom of excavator is weak, which is manifested in the slow recovery, slow action and slow speed of the boom.

Reason for failure:

1, low hydraulic oil pressure

2. The oil pump is worn.

3. The overflow valve is damaged.

4. The damaged working cylinder leads to leakage.

5, distribution valve failure

Troubleshooting of weak arm of Carter 336D excavator;

1. After successfully arriving in Nanchong, on-site debugging confirmed that the excavator arm could not work.

2. Check whether the hydraulic oil pressure is low. Make adjustments.

3. Check whether the oil pump is worn? Make a replacement.

4. Check whether the overflow valve is damaged. Replace the overflow valve.

5. Check the working cylinder for damage and oil leakage. Replace the oil cylinder.

6, check whether there is wear inside the distribution valve? Replace the corresponding worn parts.

7. After replacing the corresponding wear parts in the distribution valve, the installation and commissioning will return to normal. The failure of the arm of Carter 336D excavator was successfully repaired.