251900464 connector for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Part Number：251900464
Product Name：Connector Block
Applicable Model：XCMG ZL50G, ZL50GL Wheel Loader
Material：Alloy steel
Processing Method：Integral CNC machining
Oil Channel：Internal multi-channel transition oil passage
Thread Specification：OEM standard thread
Surface Treatment：Anti-rust passivation treatment
Rated Working Pressure：16MPa
Test Pressure：20MPa
Sealing Form：Metal gasket / O-ring seal
Working Temperature：-20℃ ~ 80℃
Inspection Items：Pressure holding test, thread inspection, dimension inspection, appearance inspection

Application Scenarios

It is used for transition and shunt connection of each branch oil circuit of loader hydraulic system, widely applicable to earthwork, quarry, sand yard and bulk material loading heavy-duty working conditions.

• Manufactured strictly according to OEM drawings, oil port layout, thread size and overall dimension fully match original parts, direct installation without modification.
• Integral alloy steel machining, compact structure, high rigidity, not easy to deform under high pressure and vibration impact.
• Smooth inner oil passage with fine deburring, low flow resistance, reduce hydraulic power loss and oil temperature rise.
• High-precision thread processing, good fit with pipe joints, effectively avoid thread slipping and sealing failure.
• Reasonable multi-port layout, integrate multiple transition points, reduce the use of intermediate hoses and leakage points.
• Anti-rust passivation surface treatment, good corrosion resistance, adapt to muddy and dusty construction environment.
• Each piece passes hydraulic pressure holding test before delivery, stable pressure bearing and low leakage risk.

FAQ 

Q1: Can this connector block be used on other models of loaders?
A1: Part 251900464 is specially for ZL50G/ZL50GL. The oil port layout and thread specifications of other models are different, confirm the part number before purchase.

Q2: What causes oil leakage at the connector block?
A2: Damaged O-ring or gasket, thread damage, scratches on the sealing surface, loose joints and internal casting sand holes will cause oil leakage.

Q3: What should be noticed when installing the connector block?
A3: Clean the oil passage and sealing surface, check that the thread is intact; tighten the joint evenly, do not over-torque to avoid thread damage.

Q4: Can the thread-damaged connector block be repaired?
A4: Slight thread damage can be repaired with thread inserts. If the thread is severely damaged or the oil passage cracks, replace the whole block.

Q5: Why does the machine move slowly after replacing the connector block?
A5: It is usually caused by unremoved machining debris blocking the internal oil passage, wrong oil port connection or reduced oil passage aperture. Disassemble and check the oil circuit.

Q6: Is there a direction requirement for the connector block installation?
A6: The connector block has a fixed oil inlet and outlet direction. Compare it with the old part before installation, wrong assembly will lead to abnormal system action.