Product Descriptio

Maintenance

Detection of the distribution valve
1. Fault manifestation
Slow action: It may be that the valve core is stuck or there is internal leakage.
Weak or not working: It may be that the hydraulic oil circuit is blocked or the valve core is damaged.
Abnormal noise: It may be that the valve body is worn inside or the hydraulic oil is contaminated.
Abnormal pressure: Use a pressure gauge to detect the system pressure to see if it meets the technical standards.
2. Detection steps
Check the hydraulic oil
Make sure that the hydraulic oil is clean, without impurities or emulsifiion.
Check whether the oil volume is within the standard range.
Detect pilot pressure
Use a pressure gauge to connect to the pilot oil circuit to check whether the pressure meets the standard (usually 3.5-4.5MPa, refer to the Doosan excavator model for specific data).
Check the action of the valve core
When operating the control lever, observe whether the distribution valve responds.
If there is no response, it may be that the valve core is stuck or there is a problem with the pilot oil circuit.
Use a pressure gauge to detect the main oil circuit pressure
Connect the pressure gauge to the main oil circuit of the distribution valve and detect the working pressure.
If the pressure is low, it may be that the valve core is worn, there is internal leakage or the overflow valve is faulty.
Disassembly inspection
If no obvious problems are found in the above inspection, the distribution valve can be disassembled for further inspection.
Check whether the valve core is worn, the spring is broken, and the sealing ring is damaged.

About Xinfeng Machinery (XF) parts:



Excavator Spare Parts

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Packaging and Delivery

3.lfI don't know the part number,what shouldI do?
A:Please send us size and pictures of old products.

4.What is the warranty of the products?
A:The warranty is 6/12 Months based on the specific product.

5.How long is your delivery time?
A:The normal delivery time is 3-5 days for stock sproductsafter getting payment. lf not in stock, we will inform you thetime requlred.

6.Which shipping term you can supply?

A:By sea,air or by express ( DHL,Fedex,TNT,UPSEMS)

7.What is your MOQ?
A:Small order and sample order are acceptable

8.Do you have any After-Sales service?
A:Yes!Our

About Xinfeng Machinery (XF) parts:

Xinfeng Machinery Parts Company was established in 1998. It is a professional team composed of high-quality technical personnel integrating production, maintenance, sales, and service. It is committed to providing customers with high-quality and efficient services. It is headquartered in Guangzhou, China.

We have been engaged in the excavator industry for 25 years. We sell original used parts, rebuilt parts,original new parts, and OEM new parts for many types.We can provide many types for you to choose from. We can provide a quality-trusted full range of hydraulic pumps, travel motors, final drives, main control valves, swing motors, and engines for KOMATSU, , HITACHI, JOHN DEERE, VOLVO, CASE JCB, KOBELCO, NEW HOLLAND, SUMITOMO, KATO, BOB, DOOSAN, and HYUNDAI.

We provide a customer satisfaction guarantee on all our products. We have invested in providing only the highest-quality replacement parts to our customers. Develop a more broad business space together based on long-term, friendly, mutually beneficial, and win-win business relations.