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This valve prevents the oil at the bottom of the boom cylinder from leaking from the valve stem (1) when there is no operating boom control lever and prevents the boom from falling under its own weight.

Fuel injector working 700h or so should be checked and adjusted once. If the opening pressure is lower than the specified value of 1Mpa or the needle valve head carbon deposit is serious, the needle valve should be discharged into clean diesel oil with wood chips to scrape the carbon deposit, dredge the jet hole with fine steel wire, and debug after installation

Common failures include mechanical and electrical failures. Mechanical failure includes fuel injector spool stuck, fuel injector blocking and leakage, when the above faults occur, it will cause mechanical action failure, thus affecting the normal operation of the engine

Farmers who have used diesel generators generally know that the nozzle is one of the three precise pairs of diesel fuel supply system. Its normal service life is over one thousand hours. But because of improper use, often use hundreds of hours

In addition to antifreeze, antifreeze also has the following advantages: anti-corrosion function: the engine and its cooling system is made of metal, copper, iron, aluminum, steel and solder. These metals will corrode and rust when exposed to water at high temperatures for a long time