ZF 4657.056.329 6 WG 210 Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4657.056.329 6 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway machinery. This assembly integrates the main gear cluster, clutch packs, and hydraulic control elements into a single, ready-to-install package. As the core rotating assembly for the WG 210 series, it directly transfers engine torque through six forward speeds and one reverse. The SKU 4657.056.329 identifies this as a fully assembled unit, distinct from individual internal components. It mounts between the TRANSMISSION HOUSING and the HOUS.FRONT SECT, forming the sealed driveline core of the transmission.

Symptoms of Failure

• Erratic gear engagement or slipping under load: Worn clutch discs or piston seals within the assembly cause delayed shifts or a complete loss of drive in specific ranges.
• Internal hydraulic pressure loss: Cracks in the rotating drum or worn sealing rings lead to low line pressure, resulting in soft shifts and overheating.
• Metallic debris in the oil pan: Bearing spalling or gear tooth fracture inside the 4657.056.329 generates visible metal particles, indicating imminent catastrophic failure.
• Whining or grinding noise from the bell housing: Damaged input shaft bearings or planetary gear sets produce distinct audible noise that increases with engine RPM.

Technical Specifications

Compatibility

This complete unit is engineered specifically for the ZF WG 210 series powershift transmissions. It is directly compatible with models including the WG 180, WG 200, and WG 210 variants used in telehandlers, wheel loaders, and industrial tractors. The assembly interfaces with the HOUSING REAR PART and the HOUSING REAR SECTION to complete the transmission case. Always verify the bell housing pattern and torque converter match before installation.

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