Overview
The ZF 4657.056.015 6 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This assembly integrates the full gear train, clutch packs, and hydraulic control system within a single, ready-to-install package. As the core of the WG 210 series, it manages torque distribution across six forward speeds and one reverse, ensuring smooth power delivery under extreme loads. The SKU 4657.056.015 is the direct replacement for OEM assemblies requiring a full unit swap, eliminating the need for partial rebuilds. This assembly is precision-machined to interface seamlessly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT, forming the structural backbone of the transmission.
Symptoms of Failure
- Delayed or harsh gear engagement: When the assembly’s internal clutch packs wear, operators experience a pronounced lag or jarring shift between forward and reverse, often accompanied by a loss of hydraulic pressure.
- Torque converter shudder under load: A vibrating or shuddering sensation during acceleration, especially in lower gears, indicates internal wear or contamination within the assembly’s oil passages.
- External oil seepage at the rear seal: Leaks originating from the joint between the assembly and the HOUSING REAR PART are a common failure mode, leading to low fluid levels and eventual overheating.
- Erratic shift patterns or neutral creep: Worn valve body components or a damaged CYLINDRICAL PIN can cause unintended gear disengagement or creeping in neutral, posing a safety risk in loader or dozer operations.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4657.056.015 |
| Assembly Type | Complete Powershift Unit (6 WG 210) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 410 mm |
| Housing Material | High-Grade Cast Iron (GGG-40) |
| OEM Reference | ZF 6 WG 210 |
| Max Input Torque | 2100 Nm |
| Fluid Capacity (system) | 22 Liters |
Compatibility
This complete assembly is engineered for the ZF WG 210 series, specifically the 6-speed variant. It is directly compatible with ZF models WG180, WG200, and WG210 transmissions used in wheel loaders, telehandlers, and industrial tractors from manufacturers such as Liebherr, JCB, and Volvo CE. The assembly also fits select WG150 applications when paired with the correct TRANSMISSION HOUSING adapter kit. Always verify the bell housing pattern and torque converter pilot diameter before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101039 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201028 | HOUS.FRONT SECT | Front section supporting input shaft |
| 4657201013 | HOUSING REAR PART | Rear casing for output shaft and PTO |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing sections |
| 0636100801 | CAP SCREW | Fastener for housing assembly |
| 4656301148 | FIXING PLATE | Locks clutch pack retaining nuts |
| 4657301034 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | High-tensile bolt for valve body |
| 4681301040 | OIL FEED.HOUSG. | Distributes pressurized oil to clutches |
