Product Descriptio
Maintenance method
1. 1. Replace the hydraulic oil. Before disassembling, some preparations need to be done. The first is to extract all the hydraulic oil from the tank. Then take the oil pipe out of the tank. At this time, clean the seals and pipe joints to prevent impurities and stains from clogging the oil pipe. Finally, the new seal must be installed back into place. It should be noted here that if the seal is damaged, it also needs to be replaced.
2. You cannot choose to use water during the cleaning process. Because the hydraulic multi-way valve will absorb outside air during work and exchange it with the internal hydraulic system, including a certain amount of moisture. If you use water directly to rinse, it will easily cause the sealant to age or other parts to be damaged, so the pipes need to be dried before dismantling.
3. Although the replacement procedure of injecting new oil into the hydraulic valve seems simple, the operation steps may be complicated. First, the multi-way valve needs to be placed at the bottom of the tank. Then remove the valve core and shake the handle by hand to open the oil chamber of the multi-way valve and remove the residual liquid. Also remove the valve core when reinstalling. This method can reduce the contamination of residual liquid.
Theory
The multi-way valve/distribution valve of the excavator is mainly composed of the following valve blocks: electromagnetic reversing valve, relief valve, one-way valve, and throttle valve.
The function of each valve block in the excavator's multi-way valve/distribution valve:
Directional valve: controls the oil in and out of the big arm and forearm cylinders, the oil in and out of the swing motor and the traveling motor, and the oil in and out of the dozer cylinder.
Relief valve: There are main relief valve and root relief valve. The main relief valve controls the system pressure. The root relief valve is related to the control method of the system, with positive and negative control.
Check valve: controls the flow of hydraulic oil in one direction.
Packing
BY EXPRESS, AIR, SEA
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, CATERPILLAR, HITACHI, JOHN DEERE, VOLVO, CASE JCB, KOBELCO, NEW HOLLAND, SUMITOMO, KATO, BOBCAT, 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.
FAQ
1. How to quickly and accurately buy products what lneeded?
A: Provide the original parts number to us to check.
2. How long have you been in the excavator
A: We are engaged in excavator parts since 1998
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?
7. What is your MOQ?
A: Small order and sample order are acceptable
8. Do you have any After-Sales service?
A: Yes!Our
