Normal condition (Condition), if it is higher than 0.12MPa, it indicates that the tubing is seriously blocked. The oil temperature is about 45 ☌ and the pressure difference is below 0.12 MPa. Judging the internal pipeline blockage of the hydraulic oil radiator, the pressure difference between the two can be checked by installing a pressure gauge on the inlet and outlet of the radiator. In addition to the intuitive judgment of the former two, it is also known from the temperature difference between the upper and lower tubes of the radiator that the heat sink should be cleaned and the fan belt should be tightened. Through the unremitting pursuit of quality and the combination of excellent engineering machinery principles, we have created high-strength, long-life machines to meet the user’s requirements in the mining industry. Hitachi excavator repair is the market leader in large hydraulic excavators. The main forms of poor heat dissipation performance of the radiator are: deformation or blockage of the external heat dissipating fins, poor cooling effect insufficient cooling fan volume hydraulic oil (Hydraulic) radiator internal pipe blockage. One is that the operation control personnel blindly refueling the other is the aging of the hydraulic pump shaft end seal (Ageing), so that the hydraulic oil (leakage) leaks, the latter should The plugging hydraulic pump replaces the oil seal.Ģ, cooling (cooling) heat dissipation performance caused by excessive oil temperature There are two reasons for the oil level of the shock absorber box being too high. During the rotation of the damper damper, a large amount of heat (Heat) is generated and transmitted to the hydraulic pump, causing the system to heat up.Īt this point, the fault can be eliminated by draining the shock absorber fluid to the standard oil level. When dealing with the thermal failure of an excavator hydraulic system, it was found that the oil level in the shock absorber greatly exceeded the oil level screw (usually about 1.5L), and these excess fluids were accompanied.
Hydraulic system heating caused by external causesįor example, the engine of the Komatsu PC200-7 excavate hydraulic pump is connected by a damping damper inside the shock absorber.
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