ZF 4644.023.030 WENDEGETRIEBE Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4644.023.030 WENDEGETRIEBE Powershift Transmission Assembly is a complete, factory-matched unit designed for the WG 200 Series. This assembly integrates the reversing gear group and clutch pack, enabling seamless directional changes under load without requiring the vehicle to come to a full stop. As a critical torque-handling component, the SKU 4644.023.030 sits directly between the torque converter and the main output shaft, managing power flow during forward-to-reverse transitions. When replacing this unit, technicians often pair it with a new TRANSMISSION HOUSING to ensure proper alignment and sealing of the entire driveline.

Symptoms of Failure

• Delayed or harsh directional shifts: A worn 4644.023.030 assembly causes noticeable lag when switching from forward to reverse, often accompanied by a loud clunk.
• Oil leaks near the bell housing: Internal seal degradation leads to ATF weeping from the joint between the assembly and the HOUSING, leaving puddles under the transmission.
• Intermittent gear slipping under load: When the WENDEGETRIEBE loses hydraulic pressure, the transmission may momentarily lose drive power during low-speed maneuvering.
• Unusual whining or grinding noises: Worn bearings within the assembly produce a metallic sound that intensifies during turns or incline operation.

Technical Specifications

Compatibility

This complete unit is engineered for the ZF WG 200 series, specifically the WG180, WG200, and WG210 models used in industrial loaders, telehandlers, and agricultural tractors. It also fits select variants of the ZF 4WG-200 and 4WG-210 powershift transmissions. For proper identification, always verify the TYPE PLATE on your existing unit, as minor revisions in the housing bolt pattern may require the use of a GROOVED STUD for secure mounting.

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