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In AP4VO112TE series of hydraulic axial piston pump, electrical proportional valve is used to control the angle of the swash plate to achieve independent control by single pump. In this way, the engine power is thoroughly used to make it possible to adjust the engine output power according to actual hydraulic power, which increases greatly the machinery’s performance.

Rated Revolving speed2200r/min
Pressure rating35Mpa

 It is featured with high power density, strong suction capacity, long life expectancy and low noise etc. This series of pump is used for crawler-type hydraulic excavator of 36-40ton as well as various open circuit hydraulics.

With years of unceasing efforts, CCHC now owns dozens of products of Three systems and Four Series. At present, CCHC provides mainly solutions of hydraulic system for hydraulic excavators and produces customized products.

Rated Revolving Speed2000r/min
Pressure rating35MPa


1. CE certification
2. ISO9001:2000
3. Brass impeller, carbon steel motor shaft, with thermal protecton inside.





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Q:The oil pump is greased by hand, so why not oil it on the truck?
Hello. Check the line for pressure reliefNormal. Is there any deformation of the oil pan?. Lead to less oil in the oil pump strainer and air. That's why I don't use oilBe sure to check if the oil pan is deformed or notAfter loading, the oil pan is not installed. Put the oil into the oil with the screen below. Move the car to see if there is any oil or pressure relief
Q:How to check the motor oil pump oil supply is normal?
Generally in the cylinder head have oil inspection screw, screw out, see oil quantity will know (start 0)You can also remove the cylinder head, start to see how much oil spray, but only suitable for centralized models, and some cylinder head and rocker arm is integrated, and can not start the demolition
Q:Why does the oil pump have a timing mark?
Of course, the oil pump is not in each period of injection, there is pressure, fuel injection
Q:When the car runs neutral, does the oil pump work?
The main reason for the car's neutral sliding is the safety factor! The problem is not the oil pump or the AT transmission oil, of course, those are incidental.Free sliding emergency brake wheel by the brake caliper, without engine braking effect, four tire deceleration unbalanced if it is easy to slip occurred even rollover accident, especially on the ground part of water or ice is more dangerous. Furthermore, when the engine is neutral, the engine is in idle speed, and the fuel consumption is higher when the engine is in partial load than in the idle state! If the maximum fuel consumption of the engine is 100%, the idle fuel consumption is at least 75% of that level. Do you think there is any point in the neutral taxi? On the contrary, with gear stalls, the appropriate time to step on the clutch, not only can use the engine brake balance brake force, but also can be reduced to a very low speed, reduce fuel consumption, a variety of benefits, but also safe...Of course, some of the teachers still believe in neutral skating. They may have learned from their master. They may have been written down from the inner consciousness, but they may not always be right.Automatic transmission cars do not speed upstairs said more than 60 neutral is the reason, in fact the basic automatic shift not to hang N files, more than 1min parking with P files, N files for hydraulic torque converter is still working, is not good for the life of the transmission. If a mechanical clutch is used instead of a hydraulic torque converter to connect the flywheel and transmission to an automatic transmission, such as a double clutch gearbox, there is no gap.
Q:How does the c4l determine whether the oil pump works? The oil lamp is on
Check that the oil is adequate, enough, that is, the oil pump to be replaced
Q:Buick Excelle replacement oil induction plug, oil pump how much money?
The oil pump is relatively expensive, about 1000
Q:What is the driving oil pump of the car?
The oil pump is driven by the power of the engine of the car.
Q:A single cylinder diesel engine oil indicator does not come up
The only reason the indicator does not come is that the oil pressure of the indicator is not enough. According to this principle, the reasons for insufficient oil pressure are eliminated one by one. It should be noted that the replacement of new parts may not necessarily be good. As long as the oil pressure is not enough, or the oil pump problem, or the problem of oil, or that there is a certain place of normal leakage of oil, causing the arrival indicator oil pressure is small.First make sure the oil pump, the method is very simple, to another machine try glance. When installing the oil pump, be sure to pay attention to the leak. Check whether the oil is fake and shoddy. By the way, check the indicator and you'd better change it to another machine. If the above is no problem, you can basically determine the normal leakage of oil. For many reasons the oil leakage is very complex, with the main bearing and the crankshaft, the new fit is not necessarily good, with the clearance of additional oil, there is the crankshaft oil plug, whether tightening. As long as you check the oil path carefully, you will find the cause of insufficient pressure.
Q:What is the oil pump on the car? If it is blocked, how can I solve it?
Providing lubricating oil and lubricating pressure for each friction pair of the engine.
Q:The new car oil pump for three months is out of order. May I ask for a new car?
Hello, you can ask, but manufacturers are accepted, I do not know, mostly for you to replace, not change [

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