ZF 4657.056.198 6 WG 210 Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4657.056.198 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated drop-in replacement designed for heavy-duty off-highway applications. This complete assembly serves as the central power distribution hub within the WG 210 series, managing torque flow from the engine to the driveline through six forward speeds and one reverse. The SKU 4657.056.198 represents a factory-matched unit that includes the main gear cluster, clutch packs, and hydraulic valve body. When rebuilding a WG 210, technicians often pair this assembly with a new TRANSMISSION HOUSING to ensure proper alignment of all rotating elements.

Symptoms of Failure

• Erratic gear engagement and slipping under load: Worn clutch discs or degraded seals inside the assembly cause delayed shifts or complete loss of drive in specific ranges.
• External oil leaks near the bell housing: Cracks in the main casing or failed gaskets allow hydraulic fluid to escape, often traced back to a compromised HOUS.FRONT SECT.
• Metallic grinding noise during directional changes: Bearing fatigue or gear tooth spalling produces a distinct scraping sound when shifting from forward to reverse.
• Overheating and burnt fluid odor: Internal clutch pack slippage generates excessive heat, leading to thermal degradation of the transmission oil.

Technical Specifications

Compatibility

This complete unit is engineered for the ZF WG 210 transmission family. It is also compatible with earlier WG 180 and WG 200 variants when used with the appropriate adapter components. The assembly directly replaces units in ZF 6 WG 210 powershift transmissions found in loaders, graders, and industrial tractors. For a full rebuild, ensure the HOUSING REAR PART and HOUSING REAR SECTION are inspected for wear, as these structural components directly affect gear alignment.

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