Overview
The ZF 4657.056.134 6 WG 210 Powershift Transmission Assembly is a complete, factory-engineered unit designed for heavy-duty off-highway applications. This assembly integrates the main gear cluster, clutch packs, and hydraulic control components into a single, ready-to-install package. As the core of the WG 210 series, it replaces the entire rotating assembly and valve body section. The SKU 4657.056.134 is a direct OEM-specification unit, ensuring precise fitment and original performance characteristics. When rebuilding a WG 210 transmission, this assembly is typically mounted between the HOUS.FRONT SECT and the HOUSING REAR PART, forming the sealed power path of the drivetrain.
Symptoms of Failure
- Delayed or harsh engagement: When the assembly’s internal clutches wear, operators notice a pronounced lag when shifting from neutral to forward or reverse, often accompanied by a jarring engagement.
- Intermittent gear slipping under load: A worn 4657.056.134 unit causes the transmission to lose torque during heavy pulling, with the engine revving higher than expected without proportional vehicle movement.
- Contaminated transmission fluid with metallic debris: Internal bearing or gear wear within this assembly produces fine metallic particles in the oil, visible during routine fluid checks or filter changes.
- Unusual whining or grinding noises: As the planetary gear sets degrade, a distinct high-pitched whine or low-frequency grinding sound emanates from the transmission housing during operation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4657.056.134 |
| Assembly Type | Complete Powershift Transmission Assembly |
| Series | WG 210 |
| OEM Reference | ZF 6 WG 210 |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-grade cast iron (GGG-40) |
| Input Spline Count | 14-tooth, 2-inch diameter |
| Output Flange Type | SAE C, 4-bolt pattern |
| Torque Capacity (max) | 2,100 Nm |
| Fluid Capacity (assembly only) | 8.5 liters |
Compatibility
This assembly is specifically engineered for the ZF WG 210 series of powershift transmissions. It is also compatible with the following ZF models that share the same internal architecture: WG 180 (with adapter plate modifications), WG 200, and WG 211. The unit directly replaces the complete rotating assembly in these transmissions. For proper installation, ensure the TRANSMISSION HOUSING and the HOUSING REAR SECTION are inspected for wear before assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Main structural casing for the gear train |
| 4657201167 | HOUS.FRONT SECT | Front section housing the input shaft and pump drive |
| 4657201171 | HOUSING REAR PART | Rear casing supporting output shaft bearings |
| 4657298103 | HOUSING REAR SECTION | Extended rear section for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | M12 fastener for housing-to-assembly mounting |
| 4656301148 | FIXING PLATE | Retains clutch pack adjustment shims |
| 4657301034 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter for sump pickup |
| 0636100803 | CAP SCREW | M10 fastener for screen sheet retention |
