ZF 4644.026.279 WENDEGETRIEBE Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4644.026.279 WENDEGETRIEBE Powershift Transmission Assembly is a complete, ready-to-install unit designed for the demanding environment of industrial drivetrains. As a core component within the WG 200 Series, this assembly manages the reversal of rotational direction and torque multiplication, enabling smooth directional shifts without clutching. The SKU 4644.026.279 integrates directly with the main gear case, and its robust construction ensures reliable power transfer in heavy-duty applications. For proper sealing and structural integrity, this unit is paired with the 4644101164: TRANSMISSION HOUSING and the 4644301371: TRANSMISSION HOUSING.

Symptoms of Failure

When the ZF 4644.026.279 assembly begins to degrade, operators will notice distinct performance issues. Erratic shifting under load is a primary indicator, often caused by worn internal clutches or valve body wear. Hydraulic oil contamination with metallic debris signals internal gear or bearing failure, requiring immediate inspection. Inability to engage forward or reverse gears at operating temperature points to seal degradation or piston leakage. Finally, audible grinding during direction changes suggests advanced wear in the planetary gear set, which can lead to total transmission lock-up if ignored.

Technical Specifications

Compatibility

This complete assembly is engineered for the ZF WG 200 series of powershift transmissions. It is directly compatible with models including the WG180, WG200, and WG211 used in construction and agricultural machinery. The unit also fits select variants of the WG120 and WG150 series when used with the correct adapter housing. For identification purposes, the 0730365067: TYPE PLATE should be verified against the original transmission serial number. Secure mounting is achieved using the 0631311009: GROOVED STUD for precise alignment.

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