ZF 4651.033.002 3 WG 100(300) Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4651.033.002 3 WG 100(300) Powershift Transmission Assembly is a complete, ready-to-install unit designed for heavy-duty off-highway applications. This assembly integrates the clutch pack, planetary gear sets, and hydraulic control system into a single, sealed module. It sits at the core of the transmission, transferring torque from the engine to the driveline under full load. The SKU 4651.033.002 is a direct OEM replacement, ensuring precise fitment within the WG 100 Series. When installing this unit, always pair it with a new TRANSMISSION HOUSING (4651101006) to maintain structural integrity and proper alignment of the internal components.

Symptoms of Failure

• Erratic shifting or gear slipping under load: When the 4651.033.002 assembly wears, internal clutch pack clearance increases, causing delayed engagement or complete loss of drive in forward or reverse gears.
• External oil leaks at the housing seam: A failing unit often exhibits fluid seepage around the mating surface between the assembly and the HOUSING (4651301034), indicating seal degradation or housing distortion.
• Abnormal whining or grinding noise during operation: Worn bearings or planetary gear damage within the assembly produce metallic sounds that intensify with engine RPM, signaling imminent failure.
• Overheating transmission fluid: Internal hydraulic circuit blockages or worn friction materials generate excessive heat, leading to burnt-smelling oil and reduced performance.

Technical Specifications

Compatibility

This assembly is engineered for the ZF WG 100 Series transmissions, specifically the 3 WG 100 and 3 WG 300 variants. It is also compatible with the WG 180 and WG 200 series when used with the appropriate adapter housings. The unit is commonly found in ZF-built powershift transmissions for wheel loaders, forklifts, and industrial tractors. Always verify the transmission model tag before ordering.

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