VH23815E0070 NO3 Injector pipe

Product Overview

The VH23815E0070 J05E No.3 Injector Pipe is a precision-engineered high-pressure fuel line designed for the Hino J05E diesel engine found in Kobelco SK200-8, SK210LC-8, SK250-8, and SK260LC-8 excavators. This injector pipe, also known as a high-pressure fuel injection line or common rail injector tube, connects the common rail to the No.3 cylinder fuel injector.

The Kobelco SK200-8, SK210LC-8, SK250-8, and SK260LC-8 are 20-26 ton class excavators powered by the Hino J05E engine. This 5.123-liter, 4-cylinder turbocharged diesel engine utilizes a Denso common rail fuel injection system operating at pressures up to 1,800 bar (26,000 PSI) . The common rail system delivers high-pressure fuel to all four injectors through individual pipes – one for each cylinder. The No.3 injector pipe is the dedicated fuel delivery line for the third cylinder.

The injector pipe must withstand extreme pressure pulses and vibration while maintaining a perfect seal at both ends. These pipes are manufactured from specialized steel tubing with precisely machined conical sealing ends. Because they are single-use components, they must be replaced whenever the fuel system is serviced. A damaged, leaking, or improperly reinstalled injector pipe can cause fuel leaks, hard starting, misfires, and even engine fires. Replacing a faulty pipe with this OEM VH23815E0070 component restores proper fuel delivery to the No.3 cylinder.

Key Features

• No.3 Cylinder Specific: Designed specifically for the No.3 cylinder injector on the J05E 4-cylinder engine. Cylinders are typically numbered from the front (fan end) to the rear (flywheel end), with No.3 being the third cylinder from the front.

• High-Pressure Capability: Manufactured to withstand the extreme pressures of the common rail fuel system, typically up to 1,800 bar (26,000 PSI).

• Precision Machined Sealing Ends: Features conical sealing surfaces (ball or cone-type ends) that mate perfectly with the common rail and injector ports for leak-free operation.

• Specialized Steel Tubing: Constructed from high-strength steel tubing designed to resist pressure pulses, vibration fatigue, and corrosion from diesel fuel.

• OEM Specification Compliance: Manufactured to the exact length, bend angles, and fitting specifications required by Hino for the J05E engine.

• Critical Safety Component: A properly sealed injector pipe prevents high-pressure diesel leaks that could create a fire hazard.

• Direct Replacement: Matches OEM part number VH23815E0070 for a perfect fit with no modifications required.

• Single-Use Design: These pipes work-harden during initial installation and must be replaced whenever removed.

Compatibility

This injector pipe is a direct OEM replacement for the following excavator models:

Compatible Excavator Models

• Kobelco SK200-8

• Kobelco SK210LC-8

• Kobelco SK250-8

• Kobelco SK260LC-8

Engine Compatibility

• Hino J05E Diesel Engine (4-cylinder, 5.123L)

Cylinder Application

• No.3 Injector Pipe (third cylinder from the front of the engine)

Part Number Reference

Also Known As: Injector Pipe, High-Pressure Fuel Line, Common Rail Injector Tube, No.3 Fuel Line, Diesel Injection Pipe

Please verify your engine configuration and confirm the cylinder numbering orientation before purchasing.

How the Injector Pipe Works

The common rail fuel injection system on the Hino J05E engine operates as follows:

The Common Rail System

The fuel supply pump draws diesel fuel from the tank and pressurizes it up to 1,800 bar (26,000 PSI). This high-pressure fuel is stored in the common rail accumulator. From the rail, individual injector pipes (one per cylinder) deliver fuel to each injector.

Injector Pipe Function

Each injector pipe acts as a high-pressure conduit between the common rail and the injector. When the engine control unit (ECU) commands the No.3 injector to open, pressurized fuel flows through the VH23815E0070 pipe and is injected into the No.3 cylinder combustion chamber.

Sealing Mechanism

Both ends of the pipe have precisely machined conical surfaces (ball or cone-type fittings). When the pipe nut is tightened, these cones seat into matching surfaces on the common rail and injector. The metal-to-metal seal is designed to withstand extreme pressures without leaking.

Signs Your Injector Pipe Needs Replacement

The injector pipe can fail due to fatigue cracks, sealing surface damage, or improper reinstallation. Replace your VH23815E0070 pipe if you observe:

1. Fuel Leaks: Visible diesel fuel leaking from the No.3 injector pipe fittings at the common rail or injector end.

2. Hard Starting: The engine cranks longer than usual before starting, possibly due to fuel pressure loss from a leaking pipe.

3. Engine Misfire: The No.3 cylinder misfires or runs unevenly due to inadequate fuel delivery or air intrusion.

4. Fuel Smell: Strong diesel odor in the engine compartment, indicating a high-pressure fuel leak.

5. Visible Pipe Damage: Cracks, kinks, dents, corrosion, or abrasion on the pipe surface.

6. Wet Engine Components: Diesel fuel residue on or around the No.3 injector area.

7. During Injector Service: Always replace injector pipes when removing or replacing injectors or working on the common rail system.

8. After Over-tightening: If the pipe nut has been significantly over-torqued, the sealing cone or threads may be damaged.

Benefits

Why choose our VH23815E0070 No.3 Injector Pipe for your Kobelco excavator?

1. Prevents Dangerous Fuel Leaks: A properly sealed injector pipe eliminates high-pressure diesel leaks that could spray onto hot engine components and cause a fire.

2. Restores Proper Fuel Delivery: A new pipe ensures the No.3 cylinder receives the full fuel pressure required for efficient combustion.

3. Essential for Injector Service: When replacing or cleaning the No.3 injector, a new pipe is mandatory for proper sealing.

4. Eliminates Air Intrusion: Prevents air from being drawn into the fuel system during shutdown, which can cause hard starting.

5. Protects the Environment: Stops diesel leaks that could contaminate soil and groundwater.

6. Maintains Engine Balance: Proper fuel delivery to all four cylinders ensures smooth, balanced engine operation.

7. Direct OEM Fit: Engineered to match the exact length and bends for proper routing without stress or contact with other components.

8. OEM-Quality Assurance: Manufactured to meet or exceed original equipment standards for pressure rating and durability.

Important Safety Information

HIGH-PRESSURE FUEL SYSTEMS ARE EXTREMELY DANGEROUS. The J05E common rail system operates at pressures up to 1,800 bar (26,000 PSI). At these pressures, diesel fuel can penetrate skin and cause serious injury or death.

Critical Safety Precautions

Installation Tips

• Professional Installation Required: High-pressure fuel system service requires specialized knowledge and strict cleanliness protocols. Professional installation is strongly recommended.

• Relieve Fuel Pressure: Turn off the engine and wait at least 5-10 minutes for pressure to dissipate before loosening any fuel lines. Some systems have a manual pressure relief valve.

• Clean All Connections: Thoroughly clean the pipe ends, common rail port, and injector port before installation to prevent contamination.

• Never Reuse Old Pipes: Injector pipes work-harden during initial tightening and must be replaced whenever loosened. Reusing a pipe risks cracking and leakage.

• Hand-Start Nuts: Carefully start the pipe nuts by hand to avoid cross-threading the delicate fittings.

• Apply Light Oil: A small amount of clean diesel fuel on the threads can help prevent galling during tightening.

• Use Correct Torque: Follow the J05E service manual for exact torque specifications. Over-tightening can damage the sealing surfaces; under-tightening will cause leaks.

• Check for Contact: After installation, verify the pipe does not contact other engine components (hoses, wiring, brackets) that could cause chafing.

• Perform Leak Test: After installation, run the engine and inspect the No.3 injector pipe connections for leaks using cardboard (not bare hands).

• Retorque if Specified: Some manufacturers specify retorquing injector pipes after a heat cycle. Consult the service manual.

The J05E 4-Cylinder Injector Pipe Set

The Hino J05E engine is a 4-cylinder diesel engine, requiring four injector pipes. The pipes are typically identified by cylinder number:

Each pipe has a unique shape and bend configuration, allowing it to reach the correct injector while clearing other engine components. They are not interchangeable between cylinders.

Why Choose Our VH23815E0070 Injector Pipe?

We understand that the Hino J05E engine in your Kobelco excavator relies on a high-pressure common rail fuel system for reliable performance and emissions compliance. The injector pipes are critical safety components that carry fuel at pressures high enough to cause injury and create fire hazards if they fail.

Our VH23815E0070 J05E No.3 Injector Pipe is manufactured to strict OEM specifications using the correct steel tubing, precise bend angles, and machined sealing surfaces required for the J05E common rail system. Whether you are replacing a leaking fuel line, servicing the No.3 injector, or performing a complete fuel system overhaul, this direct-fit injector pipe provides the leak-free performance your engine requires.

Technical Specifications

Order your VH23815E0070 J05E No.3 Injector Pipe today and restore safe, leak-free fuel delivery to your Kobelco SK200-8, SK210LC-8, SK250-8, or SK260LC-8 excavator. In stock and ready for immediate worldwide shipping. Bulk pricing available for complete injector pipe sets (all 4 cylinders) and fleet maintenance.