ZF 4657.056.307 6 WG 210 Powershift Transmission Assembly | Complete Unit

Overview

The ZF 4657.056.307 6 WG 210 Powershift Transmission Assembly represents a complete, factory-grade unit engineered for heavy-duty off-highway applications. This assembly serves as the core power transfer module within the WG 210 series, integrating the main gear cluster, clutch packs, and hydraulic control passages into a single, ready-to-install package. The SKU 4657.056.307 is specifically designed to replace a worn or failed complete transmission, eliminating the need for piecemeal component rebuilding. It sits as the central driveline component between the engine bellhousing and the output flange, managing torque distribution across six forward speeds and one reverse. For optimal sealing during installation, pair this assembly with a new 0634313603: O-RING to prevent fluid bypass at the main housing interface.

Symptoms of Failure

• Erratic gear engagement or clutch slip under load: When the complete unit begins to fail, operators often report delayed or harsh shifting, particularly when transitioning between forward and reverse. This is a classic sign of internal seal degradation or clutch pack wear within the 4657.056.307 assembly.
• External oil leaks at the front housing seam: A common failure point is the gasket interface between the main housing and the 4657201161: HOUS.FRONT SECT. Leaks here indicate that the complete unit requires replacement, as the housing itself may have developed stress fractures.
• Metallic debris in the transmission fluid: Worn bearings or gear teeth within the 6 WG 210 assembly produce visible metal particles. This symptom often accompanies a loss of hydraulic pressure, leading to total driveline failure if the complete unit is not swapped promptly.
• Unusual whining or grinding noises from the transmission center: Internal gear damage or pin wear, such as a failing 0631306816: CYLINDRICAL PIN, generates distinct audible feedback. This noise typically escalates with engine RPM and load.

Technical Specifications

Compatibility

This 4657.056.307 complete unit is engineered primarily for the ZF WG 210 series, specifically the 6 WG 210 variant. Based on the housing geometry and clutch configuration, it is also backward-compatible with select WG 200 and WG 180 series transmissions when used with the appropriate adapter kit. The unit directly replaces earlier 6-speed powershift models in ZF’s WG family, including the WG 180 (with minor modifications to the 0636115293: 螺栓 mounting pattern). It is not compatible with the WG 120 or WG 150 series due to differences in the main shaft spline count and bellhousing bolt circle. Always verify the output flange configuration and hydraulic port locations before installation.

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