Swing Motor Troubleshooting

1) The gap between the plunger and the cylinder plunger hole has increased, resulting in severe leakage. The plunger needs to be replaced.

2) The return spring has become worn out and its elasticity has decreased, causing the high and low pressure oil circuits of the cylinder to be interconnected. The spring needs to be replaced.

3) The wear of the slipper and the plunger ball has accelerated the dry friction between the slipper and the pressure plate, leading to an increase in the rotation resistance. Repair or replacement is required.

4) The bearing of the rotating motor is damaged, and the bearing positioning is ineffective. The specified type of bearing needs to be replaced.

5) The sealing surface of the safety valve has worn out and needs to be repaired or replaced.

6) The sealing element of the parking brake hydraulic cylinder has aged, failed, and leaked oil, causing the brake to not be fully released and the rotation resistance to increase. The sealing element needs to be replaced.

7) The distribution plate and the oil distribution surface of the cylinder have worn out, resulting in internal leakage, weak rotation, and require repair or replacement.

8) The sealing element has been abraded, aged, or failed and should be replaced.

Package Terms:

• Light goods are packaged in standard export-grade corrugated cartons, compliant with international shipping requirements.  

• Heavy or fragile goods are secured in certified export-grade wooden crates, reinforced for structural integrity and transit safety.  

Payment and Fulfillment:  

• Payment is typically processed and confirmed within 1–3 business days upon receipt.  

• We utilize globally recognized express carriers—including DHL, FedEx, UPS, and EMS—selected based on destination, urgency, and cost-efficiency.  

Shipping Terms and Conditions:  

1) Goods are shipped worldwide to all commercially serviced destinations.  

2) Orders are generally dispatched within 6-10 business days following payment confirmation and order verification.  

3) Prior to dispatch, all items undergo rigorous quality inspection to ensure conformity with specifications and packaging integrity.  

4) Import duties, value-added taxes (VAT), customs clearance fees, and other levies imposed by the destination country are the sole responsibility of the buyer. While we provide accurate commercial documentation to support duty-minimization efforts, we cannot guarantee exemption from such charges.  

5) Each shipment is assigned a unique tracking number, enabling real-time online monitoring via the respective carrier’s official platform.

FAQ

Does it genuine parts?

Yes, It is genuine Sumitomo motor made in Japan.

What brand of Excavator fit to?

It fit to Case Sumitomo and Link-belt excavator.

How can I order it?

I will send invoice with payment information via email.

How do payment?

We accept to T/T, PayPal, Credit Card, Western Union transfer.

What's the delivery time?

Stock products estimated 3-7 days.

Do you have photo for the products?

Yes, we will send you photo before shipping.

Can you offer warranty for your products?

Yes, we offer 1-3 months warranty.

Can i have a sample?

Yes, we offer sample for bulk order.