803107807 threaded plug for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

- Product Name: Threaded Plug
- Part Number: 803107807
- Applicable Equipment: XCMG ZL50G, ZL50GL Wheel Loader
- Main Material: Carbon steel
- Manufacturing Process: Cutting, turning, thread rolling, deburring, anti-rust treatment, thread inspection
- Surface Treatment: Blackening for rust prevention
- Installation Position: Process holes / spare oil ports on hydraulic valves, cylinders and pumps
- Fastening Method: Threaded installation with sealing washer
- Supply Note: Single threaded plug supplied; sealing washers are separately optional parts
- Functions: Block hydraulic ports, prevent oil leakage and block contaminants entering oil passages
- Working Conditions: Sand and stone yards, mines, earthwork infrastructure, mixing plants, material transfer yards and other heavy-duty vibrating operation sites

• Thread specification and length same as original parts, good interchangeability for direct installation
• Precision rolled thread with full profile, resistant to thread damage after repeated disassembly
• Blackened anti-rust surface, good resistance to mud and water corrosion
• Standard hex head for stable wrench force and easy service
• Flat end face for reliable sealing with washer, resisting leakage under vibration
• Compact size, simple replacement and low spare part cost
• 100% thread inspection before delivery for smooth assembly
• Compatible with various hydraulic component ports of ZL50G/ZL50GL

FAQ 

Q1: Can this threaded plug fit ZL50GN loader directly?
A1: Part No.803107807 is specially designed for ZL50G and ZL50GL. The hydraulic valve layout and thread specification of oil ports on ZL50GN are different, so it cannot be used directly. To replace plugs on ZL50GN, you must cross-check the OEM part number, thread pitch and overall length of the old plug. It can only be installed when all parameters match, otherwise it will lead to poor sealing, thread stripping and oil leakage.

Q2: Can a plug with damaged threads continue to be used?
A2: It is not recommended. Damaged threads cannot fully mesh with internal threads of the port. The tightening torque cannot meet requirements, and the plug will loosen and leak oil under equipment vibration. In severe cases, it will scratch the internal threads of the valve block and cause permanent damage to the valve body, which brings high repair cost. Replace it immediately once the thread is damaged.

Q3: Are sealing washers included?
A3: Standard package only contains the threaded plug itself. Sealing washers are optional parts and need separate orders. The washer is critical for sealing. It is recommended to replace the washer together with the plug every time. Old washers are deformed and aged even if they look intact, which may cause hidden oil seepage.

Q4: How to deal with oil leakage after installation?
A4: Troubleshoot step by step: First, confirm whether the plug is tightened to the specified torque. Second, remove the plug and inspect the washer for flattening, aging, misalignment or trapped dirt between sealing faces. Third, check whether internal threads of the oil port are rusted or damaged. Replace the plug if its threads or end face are deformed.