252102657 connection block assembly for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Part Number：252102657
Product Name：Connection Block Assembly
Applicable Model：XCMG ZL50G, ZL50GL Wheel Loader
Material：Forged steel / high-strength cast aluminum alloy
Surface Treatment：Oxidation / blackening anti-rust treatment
Working Medium：L-HM46 anti-wear hydraulic oil
Working Temperature：-20℃ ~ 80℃
Connection Form：Threaded port + flange interface
Inspection Items：Dimensional inspection, pressure holding sealing test, internal channel cleanliness inspection, thread detection

Applicable Scenarios

It is used for centralized transition and oil distribution of hydraulic pipelines of 5-ton wheel loaders, matched with multi-way valves, hydraulic pumps and working oil cylinders, suitable for earthwork, quarry mining, sand yard, port bulk cargo loading and unloading.

• Produced strictly according to OEM standards, oil port layout and installation dimensions are consistent with original parts, direct replacement without modification.
• Integrated multi-channel design, reduce the use of scattered joints, effectively reduce system leakage points.
• Smooth internal oil passage, small flow resistance, reduce hydraulic heat generation and energy loss.
• High-strength blank processing, good pressure resistance and impact resistance, not easy to crack under cyclic pressure impact.
• Precise thread machining, high matching accuracy with pipe fittings, good sealing after assembly.
• Compact structure, save installation space, neat pipeline arrangement on the machine.
• Strict pressure holding test before delivery, stable batch quality, convenient spare parts management.

FAQ 

Q: Can I drill new oil holes on the connection block by myself to change the oil circuit?
A: It is not allowed. Random drilling will destroy the internal pressure-bearing structure and easily cause crack and oil leakage under pressure.

Q: What are the common reasons for oil leakage of the connection block assembly?
A: It may be damaged sealing ring, thread slipping, scratch on the sealing surface, or crack of the block body caused by excessive tightening torque.

Q: What should be checked before installation?
A: Check whether the block body has cracks, sand holes and damage; clean the debris in the oil port, check the integrity of each thread and sealing plane.

Q: If the surface of the connection block is scratched, can it continue to be used?
A: Shallow scratches that do not involve the sealing surface can be used; scratches on the sealing surface will lead to leakage and need to be replaced.

Q: What will happen if the threaded joint is over-tightened?
A: Excessive torque will cause thread sliding or even crack the block body, resulting in permanent damage to the connection block.

Q: How to maintain the connection block in daily use?
A: Regularly check each oil port for oil seepage, keep the surface clean, avoid heavy impact and collision to the block body.