Heavy Duty RCV 10*25 Pilot Valve Pusher Rebuild Kit for KOBELCO High Performance Hydraulic Seals

This product is a Heavy-Duty Pilot Valve Pusher Rebuild Kit, specifically engineered for the hydraulic systems of KOBELCO heavy machinery. It focuses on the restoration and sealing upgrades of pilot valve pushers and serves as a core solution for rebuilding critical wear components within hydraulic maintenance.

• Product Name: Heavy Duty RCV 10*25 Pilot Valve Pusher Rebuild Kit for KOBELCO High Performance Hydraulic Seals
• Product Type: Hydraulic System Repair & Rebuild Kit
• Compatible Brand: KOBELCO
• Primary Application: Designed to repair wear, deformation, and leakage issues in KOBELCO pilot valve pushers. It restores pusher functionality, ensures hydraulic system pressure stability, and prevents fluid leakage.
• Material Standards:
  • Pusher: Manufactured from high-strength, wear-resistant alloy steel with advanced heat treatment reinforcement.
  • Seals: High-performance hydraulic sealing materials (NBR + Polyurethane composite), ISO 9001 certified, and engineered for high-pressure environments.
• Operating Temperature: -40°C to 300°C (Engineered for extreme conditions; reliable performance in both high-heat and cryogenic environments).
• Operating Pressure: Rated for up to 5,000 psi (345 bar), meeting the heavy-duty operational demands of KOBELCO machinery.
• Environmental Standards: Seals are free of harmful volatile substances and comply with international environmental regulations for diverse industrial applications.

Here is the professional English translation for the product usage steps, utilizing industry-standard technical terminology.

1. 1. Safety Preparation

   Power down the equipment and shut off the hydraulic system. Relieve all residual pressure within the hydraulic lines (open the hydraulic tank relief valve). Wear protective gloves and safety goggles to prevent injury from hydraulic fluid splashes or sharp components.

2. 2. Disassembly of Old Components

   Locate the pilot valve assembly. Use specialized tools to disassemble the pilot valve pusher components. Gently remove the old pusher and seals. Thoroughly clean oil sludge, impurities, and wear debris from the valve interior.

   Note: It is highly recommended to use a dedicated cleaning agent. Since 80% of hydraulic failures are caused by contamination, this cleaning step is critical to prevent damage to new parts.

3. 3. Inspection & Surface Cleaning

   Inspect the pilot valve mounting seat for signs of wear or deformation. Minor wear should be lightly polished and repaired. Ensure the mounting surface is flat and free of contaminants to guarantee an airtight seal and smooth pusher operation.

4. 4. Installation of New Components

   Smoothly place the new pusher into the mounting position. Install the kit's seals and gaskets in the correct sequence.

   • Critical: Pay close attention to the installation direction. For U-cup seals, the open end (lip) must face the pressure source to prevent leakage.
   • Press parts into place gently; avoid excessive force to prevent damaging the seals or the pusher rod.
5. 5. Reassembly & System Testing

   Reinstall the pilot valve pusher assembly into the equipment. Tighten the mounting bolts to the specified torque (avoid over-tightening or under-tightening). Reconnect the hydraulic lines, power on the equipment, and start the hydraulic system.

   • Checklist: Verify smooth pusher travel, ensure there are no leaks, and confirm stable operating pressure. Once no abnormalities are detected, the equipment is ready for service.

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