The JDG10631 is the professional-grade puller required for extracting carbon-seized injector sleeves on John Deere 4045, 6068, and 9.0L EUI engines—engineered to protect the cylinder head bore from catastrophic damage.

The Critical Barrier: Why Injector Sleeves Matter

On John Deere 4045, 6068, and 9.0L platforms, the injector sleeve (or nozzle cup) serves as the vital seal between the high-pressure fuel system and the engine’s coolant passages. When these sleeves fail or become carbon-bound, removal is a high-stakes operation.

• Cylinder Head Scoring – Using pry bars or generic slide hammers can gouge the head bore, leading to permanent coolant-to-fuel leaks.
• Carbon Seizure – Years of heat cycles "weld" the sleeve to the head; the JDG10631 provides the linear, controlled force needed to break this bond.
• EUI Compatibility – Specifically designed for Electronic Unit Injector (EUI) configurations where clearance is tight and precision is mandatory.
• Coolant Contamination – A botched removal often drops debris or metal shavings into the cooling system, leading to radiator and water pump failure.
• Precision Extraction — The JDG10631 grips the sleeve internally, ensuring the extraction force is centered and vertical.

What is the JDG10631 Sleeve Puller?

The JDG10631 Injector Sleeve Puller is a heavy-duty service tool designed for John Deere dealership-level engine overhauls. It eliminates the "prying" method, offering a mechanical advantage that safely pulls the cup from the cylinder head.

Technical Specifications & Engine Compatibility

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