252101010 screw for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Product Name: Plug
Part No.: 252101010
Applicable Model: XCMG ZL50G, ZL50GL Wheel Loader
Type: Hydraulic and transmission system port sealing accessory
Sealing Type: Matches OEM sealing structure (subject to actual product)
Body Material: Metal (subject to actual product)
Surface Treatment: Anti-rust treatment
Installation: Threaded into oil circuit orifice
Function: Seals inspection holes, drain holes, and spare process holes; prevents leakage and contaminant entry
Working Condition: Quarry mining, aggregate yard, heavy earthwork and construction projects

Applicable Scenarios

Used for sealing inspection holes, drain holes, and spare process holes on hydraulic valve blocks, oil circuit interfaces, and transmission housings of XCMG ZL50G and ZL50GL wheel loaders. Widely used in quarry, aggregate yard, and earthwork construction sites with heavy loads, dust, and mud splash. It is a basic sealing accessory for ensuring oil circuit system sealing and preventing media leakage and contaminant intrusion.

▪ OEM thread specifications and outline dimensions for direct replacement on ZL50G/ZL50GL
▪ Factory thread accuracy inspection ensures smooth threading and prevents sealing failure from stripping or cross-threading
▪ Machined sealing surface with sealing washer or conical structure reduces port leakage risk
▪ Structural strength meets system working pressure requirements for reliable sealing under vibration
▪ Anti-rust surface treatment adapts to outdoor mud and dust, reducing corrosion seizure
▪ Simple structure for easy maintenance and disassembly
▪ Can be stocked together with sealing washers, connectors, and oil circuit accessories

FAQ 

Q：When does a plug need replacement?
A: Replace when threads are stripped, the hex socket is worn and cannot be removed/installed, the sealing surface is damaged causing leakage, or corrosion seizure occurs. Continued use may cause persistent oil leakage and contaminants entering the oil circuit.

Q：Is oil seepage at the plug always caused by the plug itself?
A: Not necessarily. Check whether the sealing washer is aged/damaged, the port threads are damaged, and the plug is tightened to specified torque first. Inspect the plug body after confirming seals and port are normal.

Q：What to note during plug installation?
A: Confirm thread specification matches the original and clean the port before installation to prevent contaminant entry. Tighten to specified torque to avoid over-tightening damage to threads or sealing surface.

Q：Can 252101010 be used on other loader models?
A: Cross-model use is not recommended. The thread specification and sealing type are designed for ZL50G/ZL50GL oil circuit orifices. Other models may have different port specifications. Confirm compatibility by part number.

Q：How to maintain the plug daily?
A: Periodically inspect for oil seepage traces. During oil circuit maintenance, check sealing washer condition and replace promptly if aged. Keep the plug surface clean to prevent long-term mud adhesion causing corrosion.