Restore Precise Fuel Pump Timing & Drive Integrity with a Critical Shaft Assembly

Ensure the heart of your fuel injection system operates with perfect synchronization and reliability with the genuine VH136102260A J08E Injector Pump Shaft Assembly. This precision-engineered component is the direct OEM replacement for the drive shaft that connects the engine’s gear train to the high-pressure fuel injection pump on J08E engines in Kobelco SK330-8 and SK350LC-8 excavators. A worn or damaged pump shaft can cause incorrect fuel timing, loss of power, abnormal noise, and catastrophic pump or engine damage. Secure the critical link between your engine and fuel system with this durable, exact-fit assembly.

Product Overview

The VH136102260A J08E Injector Pump Shaft Assembly is a key drivetrain component within the engine’s front gear housing. It transmits rotational power from the engine’s timing gears directly to the fuel injection pump, ensuring the pump’s internal camshaft or rotor turns in precise synchronization with the engine’s pistons and valves. This exact timing is crucial for proper fuel injection. Our replacement shaft assembly is manufactured to meet strict OEM tolerances for length, spline geometry, bearing journals, and gear meshing. It is designed to withstand the high torque loads and shear forces involved in driving the injection pump, restoring silent, efficient power transfer.

Key Features & Benefits

• Precision OEM Fit & Timing: A direct replacement for part number VH136102260A, guaranteeing perfect spline engagement with the fuel pump, correct gear alignment in the timing case, and restoration of factory-specified fuel injection timing.

• Ensures Accurate Fuel Delivery: A true-running shaft without wear or deflection is essential for maintaining the precise angular relationship between the engine crankshaft and the injection pump, which dictates injection timing.

• Eliminates Abnormal Noise & Wear: Replaces a worn shaft that can cause knocking, whining, or gear chatter noises from the front timing cover, and prevents accelerated wear on the pump’s internal drive mechanism and engine timing gears.

• Prevents Catastrophic Drivetrain Failure: A severely failed shaft can lead to the pump seizing or losing drive, resulting in sudden engine shutdown, potential gear damage, and costly repairs to both the pump and engine front cover.

• Durable, Hardened Construction: Made from high-strength alloy steel, with precision-machined splines and bearing surfaces, often heat-treated for maximum wear resistance and fatigue strength.

• Complete Assembly for Reliability: Typically includes the shaft with integrated gear or drive coupling, and may include related bearings or sealing surfaces, providing a comprehensive solution superior to repairing individual elements.

Technical Specifications

• Part Number: VH136102260A

• Application: Fuel Injection Pump Drive Shaft Assembly

• Engine Compatibility: J08E Engine Series

• Compatible Models: Kobelco SK330-8, SK350LC-8 Excavators

• Function: Transmits power from engine timing gears to the injection pump.

Frequently Asked Questions (FAQ)

Q1: What are the symptoms of a failing injector pump shaft (VH136102260A)?
A: Warning signs include:

• Unusual mechanical noises (knocking, grinding, whining) from the front engine/timing cover area, especially near the fuel pump.

• Visible fuel leaks from the front seal of the injection pump, which can be caused by excessive shaft wobble.

• Engine timing-related issues such as hard starting, loss of power, or rough running, if the shaft wear affects pump timing.

• Visible damage or excessive play in the shaft when the pump is removed for service.

Q2: Does this replacement require special timing procedures?
A: YES. Absolutely. Replacing the injection pump drive shaft is a major engine timing procedure. It requires locking the engine in a specific timing position (usually at Top Dead Center for cylinder #1), marking gear relationships, and ensuring all timing marks are perfectly aligned during reassembly. This is a job for a professional diesel technician with the proper tools and manuals.

Q3: Is this just the shaft, or does it include gears and bearings?
A: The VH136102260A is typically a shaft assembly, which includes the shaft itself with its machined features. It may or may not include the driven gear pressed onto it. The front cover bearings and seals are usually separate parts. Clarify the exact contents with the seller.

Q4: Can a failing shaft damage the fuel injection pump?
A: Yes, severely. A wobbly or misaligned shaft places uneven stress on the pump’s input bearing and drive coupling, leading to premature pump failure. It is a common cause of pump seizures.

Q5: Why choose an OEM-spec part over a generic shaft?
A: The VH136102260A is engineered to exact hardness, balance, and dimensional tolerances. A generic shaft may not have the precise heat treatment, leading to rapid wear, or may have slight dimensional errors that affect engine timing and pump alignment, causing poor performance or rapid failure.

Secure Your Fuel System’s Foundation. Restore Silent, Precise Drive – Order the VH136102260A Pump Shaft Assembly Today!