ZF 4660.134.002 CONVERTER Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4660.134.002 CONVERTER Powershift Transmission Assembly is a complete, drop-in ready unit designed for the demanding environments of off-highway machinery. This assembly integrates the torque converter and clutch pack into a single, sealed module, serving as the primary hydraulic torque multiplication and engagement interface within the transmission system. As a complete unit, it eliminates the need for piecemeal rebuilding, ensuring precise alignment of internal components. The SKU 4660.134.002 is a direct replacement for worn or failed converter assemblies in the WG 92 and WG 98 series, restoring full power transfer efficiency. When installing this converter, it is critical to inspect the 4660101011: TRANSMISSION HOUSING for cracks or warping, as housing integrity directly affects converter alignment and oil flow.

Symptoms of Failure

• Torque converter shudder or vibration during lock-up: A failing 4660.134.002 often produces a distinct shudder when the converter clutch engages, indicating worn friction discs or a damaged stator.
• Transmission overheating and high sump temperatures: If the converter fails to maintain proper stall speed, the system generates excessive heat, often accompanied by a burnt oil smell.
• Delayed or harsh engagement from neutral to drive: Worn seals or a failing impeller inside the converter assembly cause sluggish response and abrupt gear engagement.
• Low stall speed or engine flare under load: A worn converter allows the engine to rev higher than normal without corresponding vehicle movement, signaling internal leakage or turbine damage.

Technical Specifications

Compatibility

This converter assembly is engineered for the ZF WG 92 and WG 98 series powershift transmissions. It is commonly found in the WG180, WG200, and WG211 models used in wheel loaders, telehandlers, and industrial tractors. The unit also fits select WG 150 variants with matching bellhousing patterns. For a complete rebuild, ensure the 4660301018: HOUSING is free of scoring, and replace the 0631306174: CYLINDRICAL PIN to guarantee dowel alignment. After installation, affix the 0769123894: TYPE PLATE for proper identification during future service intervals.

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