ZF 4660.013.010 WG 98 TC Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4660.013.010 WG 98 TC Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This assembly integrates the torque converter and planetary gear sets into a single, sealed housing, delivering reliable power transfer in wheel loaders, dump trucks, and industrial machinery. The SKU 4660.013.010 serves as the core rotating assembly within the WG 98 series, directly interfacing with the TRANSMISSION HOUSING to form the main structural backbone. Precision-engineered to OEM tolerances, this unit replaces worn-out assemblies to restore full hydraulic pressure and shift quality.

Symptoms of Failure

• Delayed or harsh engagement when shifting from neutral to forward or reverse, often accompanied by a loud clunk, indicating internal clutch pack wear within the 4660.013.010 assembly.
• Torque converter shudder at low RPM under load, typically caused by degraded stator or turbine components inside the WG 98 TC unit.
• Transmission overheating and fluid darkening, even after a cooler flush, pointing to excessive internal slippage or bearing failure in the powershift assembly.
• Intermittent loss of drive in higher gears, often misdiagnosed as a valve body issue, but actually stemming from worn planetary gear sets within this complete unit.

Technical Specifications

Compatibility

This complete assembly is engineered for the ZF WG 98 series, specifically the WG 98 TC variant. It is a direct fit for models including the WG180, WG200, and WG98 transmissions found in articulated dump trucks and large wheel loaders. The unit also integrates with the HOUSING II to secure the rear bearing carrier. During installation, ensure the CYLINDRICAL PIN is correctly aligned to prevent misalignment of the clutch drums. After assembly, affix the TYPE PLATE to the housing for proper identification.

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