ZF 4660.013.017 WG 98 TC Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4660.013.017 WG 98 TC Powershift Transmission Assembly is a complete, factory-grade unit engineered for heavy-duty off-highway machinery. As the core torque converter and gear train assembly for the WG 98 series, this SKU 4660.013.017 integrates the clutch packs, planetary gears, and hydraulic control elements into a single ready-to-install package. It sits directly between the engine flywheel and the final drive housing, converting engine torque into controlled, multi-speed output. For proper sealing and structural integrity, this assembly mates with the TRANSMISSION HOUSING and the HOUSING II, ensuring alignment of all rotating components.

Symptoms of Failure

• Delayed or harsh shifting under load: When the WG 98 TC assembly wears, internal clutch clearance increases, causing hesitation or jarring engagement during directional changes.
• Torque converter shudder at low RPM: A worn stator or turbine within the 4660.013.017 unit produces a noticeable vibration when accelerating from a stop, often misdiagnosed as engine misfire.
• External oil seepage from the bell housing: Degraded seals in the complete unit allow ATF to escape, leaving puddles under the vehicle and reducing hydraulic pressure.
• Loss of power in higher gears: Internal wear on the planetary gear sets causes the transmission to slip or fail to hold gear ratio, especially under heavy load.

Technical Specifications

Compatibility

This complete unit is specifically designed for the ZF WG 98 series powershift transmissions. It is a direct fit for models including the WG180, WG200, and WG211, which are commonly used in wheel loaders, telehandlers, and industrial tractors. The 4660.013.017 assembly also serves as a replacement for earlier WG 98 variants with identical bell housing bolt patterns. Always verify your transmission model tag before ordering; the TYPE PLATE provides the definitive model code.

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