Overview
The ZF 4657.056.163 6 WG 210 Powershift Transmission Assembly is a complete, factory-engineered unit designed for heavy-duty off-highway machinery. This assembly integrates the main gear cluster, clutch packs, and hydraulic control components into a single, ready-to-install package. As the core power transfer module in the WG 210 series, it replaces worn or failed internal assemblies without the need for individual gear or bearing rebuilds. The SKU 4657.056.163 is a direct OEM-specification unit, ensuring precise fitment and load capacity for demanding applications such as wheel loaders, graders, and industrial tractors. This complete assembly sits between the TRANSMISSION HOUSING and the HOUS.FRONT SECT, forming the sealed driveline core.
Symptoms of Failure
When the ZF 4657.056.163 assembly begins to fail, operators typically notice three distinct performance issues. First, delayed or harsh gear engagement occurs as internal clutch pack clearances exceed tolerances, causing a noticeable “clunk” when shifting from neutral to forward or reverse. Second, intermittent power loss under load—the machine may surge or lose torque when climbing grades or pushing heavy material—indicates worn planetary gears or failing seals. Third, chronic hydraulic oil contamination with metallic debris in the filter or sump is a clear sign of internal bearing or gear degradation. Fourth, audible whining or grinding noises from the transmission bell housing, especially at low RPM, point to advanced wear in the main shaft bearings.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4657.056.163 |
| Assembly Type | 6-Speed Powershift Transmission (Complete Unit) |
| Series | WG 210 |
| Dry Weight (approx.) | 285 kg (628 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-Grade Cast Iron (GGG-40) |
| Input Torque Capacity | 1,200 Nm (885 lb-ft) |
| OEM Reference | ZF 4657.056.163 |
| Related Housing Part | HOUSING REAR PART |
| Related Housing Part | HOUSING REAR SECTION |
Compatibility
This complete assembly is specifically engineered for the ZF WG 210 transmission series. It is also compatible with the following ZF models that share the same gear train architecture and mounting bolt pattern: WG 180, WG 200, and WG 211. The unit is not interchangeable with the smaller WG 150 or larger WG 250 series without significant adapter modifications. For correct installation, ensure the TRANSMISSION HOUSING and HOUS.FRONT SECT are in good condition, as these components directly seal the assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for the gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft and pump drive |
| 4657201170 | HOUSING REAR PART | Rear housing section supporting output shaft |
| 4657298102 | HOUSING REAR SECTION | Alternate rear housing variant for specific applications |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing-to-assembly mating |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Locks clutch pack adjustment nuts |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump return |
| 0636100803 | CAP SCREW | High-tensile bolt for final drive connection |
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