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WA250 Hydraulic Pump 705-51-20240

WA250 Hydraulic Pump 705-51-20240

    Payment Type: L/C,T/T,Paypal,Money Gram,Western Union
    Terms of Trade: FOB,CFR,CIF,FCA
    Min. Order: 1 Set/Sets
    Delivery Time: 2 Days
    Packaging: Export packaging with PE film/Bubble bag/Carton/Wooden box/Pallet
    Productivity: 500pcs per month
    Brand: CS
    Transportation: Ocean,Land,Air
    Place of Origin: China
    Supply Ability: 500pcs per month
    Certificate: ISO9001&CE
    Port: Qingdao,Shanghai,Tianjin

Basic Info

Model No.: 705-51-20240

Product Description

Excavator spare parts Pc-800 Hydraulic Pump 708-2l-00760

The main pump for the wheel excavator with the pilot pump will also have a pilot oil filter, and the pilot filter must be replaced. This is because the pilot pumps are generally in the form of gear pumps. Although the gear meshes are lubricated by hydraulic oil, they are also worn out, and some of the iron scraps fall off and enter the hydraulic system. If the pilot pump filter element is not replaced in time and the pilot filter element is clogged, the hydraulic oil will continue to provide the pilot oil flow through the bypass oil circuit. At this time, the pilot operation valve may be stuck.We can also supply the wheel excavator ,crawler excavator ,construction machinery attachment , pipelayer .
The whole car is slow and weak.
1. The hydraulic pump output is insufficient, and the service diagnostic system can be tested for relevant pressure; 2. The insufficient pilot pressure causes insufficient pressure to open the spool, resulting in insufficient flow and slow operation; 3. Hydraulic return filter and oil filter are blocked phenomenon.
Walking weakness
1. The hydraulic pump and its control system are faulty. It is necessary to test whether the P1 and P2 pump pressures are within the normal range; 2. The pilot oil circuit pressure is abnormal; 3. The travel system control valve spool and valve seat wear; 4. The travel motor The pressure is abnormal; 5. The spool of the travel port overflow valve is blocked, and the spool is issued.
Rotational weakness
1. Circuit reason: Check whether the relevant circuit such as the rotation sensor is loose, and the voltage resistance value of each joint. 2. Hydraulic reasons: the internal components of the rotary pump of the excavator are worn, the wearer of the excavator is worn, the control valve of the hydraulic pump is broken, the pressure value of the left and right rotation of the excavator is high or low, the internal pressure of the rotary pump is released, and the rotary motor of the excavator is sealed. The failure seal is not well drained, the overflow is not properly adjusted, and the swing motor is overloaded. Lifting big / small arm weakness 1. Large / small arm arm oil circuit is blocked, oil supply is not smooth; hydraulic pump suction port filter is blocked, oil pump can not suck oil; 2. large / small arm cylinder internal leakage; 3. large / Small arm valve core is issued, resulting in poor oil path; 4. The overflow valve has a blockage.

Bulldozer spare parts ,loader spare parts , excavator spare parts we are also have the good price advantage .

Bucket telescopic weakness
1. Multi-way valve upper arm oil valve spool wear; 2. Bucket cylinder assembly wear/damage; 3. Bucket spool valve core stuck/wear; 4. Bucket regenerative circuit valve, Check Valve back The spring force of the spring is too weak.

hydraulic pump 705-51-20240

Hydraulic Pump Assy

Packaging & Shipping

the shipping details

company information

Construction machine small crawler bulldozer

factory information


Jining ChangSong Construction Machinery Co.,Ltd is founded in 2000,located in jining city,Shandong province.Which is the hometown of Confucious and Mencious,the Pearl of Canal.Based on the Supply Chain of Shantui.Komatsu Construction Machinery Manufacturer,we have advanced production equipment and Technical Staffs.Meanwhile,Welcome your OEM and ODM production requirement.From the year of 2009.We successfully won the supplier qualification of China Petroleum Pipeline Bureau(CPP),Sinohydro Corporation Ltd,China Railway Group Ltd.(CTCE).Shantui Imp&Exp Co.,Ltd ,China Datang Corporation etc Super Large multinational enterprises.

Business Scope as follows:
Shantui,Shanghai,Pengpu,Hebei,XuanGong,Inner Mongolia Dadi,Zoomlion series Bulldozer,Daifeng Pipelayer Maintenance Service and spare parts.
Shantui,Degong,XCMG,LiuGong,XGMA,SDLG,Wheel loader,Grader,Road Roller and Spare parts.
CCEC,DCEC,Weichai Steyr,Shangchai,Xichai,Engine Unit and Diesel Generator set and spare parts.
Komatsu,Cat,Hitachi,Volvo,Case,Sany,XCMG,SDLG,Lishide,etc spare parts, Maintenance and Multi-functional parts.
We have rich experiences Maintenance Technical Engineer team,which means can provide Customs with highly efficiency Maintenance Services.In the past few years ,we have running the Maintenance services very well all over the world,solved the problems in time,because of our outstanding technical services for Bulldozer,Pipelayer,Excavator.
excavator attachement quick coupler connect Hitachi

Wheel excavator

Crawler excavator

Construction machinery attachment

Bulldozer spare part

Excavator spare parts

Power generator set

shantui spare parts contact information

Jining Changsong Construction Machinery Co., Ltd.

 Jining Changsong Construction Machinery Co.,Ltd located in Jining City, Shandong province, China mainland, affiliated with SHANTUI Construction Machinery Co.,Ltd and was established in 2000.We specialized in sale and maintenance of construction machinery and related spare parts ranging from undercarriages, track roller, top roller, sprocket, idler, transmissions to metal structural components, also welcome customized special tools. We have independent right to export .The Shantui spare parts which we have agent have been exported to Southeast Asia, Middle East and Africa and other countries in the world.

The take-off of an enterprise depends on a good brand. Our company bases on the support of Shantui, and has a professional sales team and excellent technical staff.

With integrity services as its purpose.the company adhere to management talent, development of technology, selling high quality qualified products, and has made all the work achieved positive results. We provide mechanical repair service and spare parts to China's Water Conservancy, electric power, metallurgy, railway, highway , power plant and a number of large enterprises and construction units, such as coal, oil and gas pipelines
The pragmatism, efficient, preciseness, carefulness, fine quality of products are our styles of work. With those styles , we have win the trust of users and set a quality model for this line.

Pushing Shantui as the flagship brand, we has a team of technical experts which supply repair service in the forefront all the year around. Strong technical force, strict management system, first-class service, and excellent sales make us became qualified supplier of many construction units, and the company was authorized by Shantui as the sole agent of PetroChina and China Natural Gas..
The solid technical force and the genuine spare parts provide reliable service to your equipment, and ensure your machine in a good condition. We insist on the management servitization, logistics rapidity, technical specialization, components purification,and always implement the "Integrity-based, sincere service" as the fundamental concept.
Changsong will be with the higher, stronger, better development, better technology, better putation, more and more high quality service to serve for the mass of customers.and create new brilliance with you. Welcome new and old customers to visit our company. We will wholeheartedly serve for your career, and hope to make a bright future with you.

Company Info

  • Company Name: Jining Changsong Construction Machinery Co., Ltd.
  • Representative: Linying Kou
  • Product/Service: Engine , Turbocharger , Pump , Filter element , Torque converter assy , Excavator quick hitch
  • Capital (Million US $): 1010,000RMB
  • Year Established: 2003
  • Total Annual Sales Volume (Million US $): US$2.5 Million - US$5 Million
  • Export Percentage: 61% - 70%
  • Total Annual Purchase Volume (Million US $): Below US$1 Million
  • No. of Production Lines: 5
  • No. of R&D Staff: 5 -10 People
  • No. of QC Staff: Fewer than 5 People
  • OEM Services Provided: yes
  • Factory Size (Sq.meters): 3,000-5,000 square meters
  • Factory Location: Renxing industrial park,Jining,Shandong,China
  • Contact Person: Ms. Henry Liu
  • Tel: 86-0537-3209399
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