Overview
The ZF 4657.056.050 6 WG 210 Powershift Transmission Assembly is a complete, factory-engineered unit designed for heavy-duty off-highway machinery. This assembly integrates the full clutch pack, planetary gear sets, and hydraulic control system into a single, ready-to-install package. As a direct replacement for the WG 210 series, the SKU 4657.056.050 ensures precise gear engagement and torque distribution in wheel loaders, dozers, and material handlers. It sits as the core power transfer module between the engine and the driveline, requiring seamless integration with the TRANSMISSION HOUSING to maintain structural integrity under high load cycles.
Symptoms of Failure
- Delayed or harsh shifting: When the internal clutch packs wear, operators experience a noticeable lag between gear selection and engagement, often accompanied by a jarring thud.
- Low hydraulic pressure and overheating: A failing unit may cause the transmission to run hot, with pressure gauge readings dropping below 150 psi during operation.
- Oil contamination and metallic debris: Worn bearings or planetary gears shed metal particles into the fluid, visible as glitter in the oil filter or sump magnet.
- Intermittent loss of drive: The machine may suddenly lose forward or reverse power, especially under load, indicating internal seal failure or clutch slippage.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.056.050 |
| 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-strength cast iron (GGG-40) |
| OEM Reference | ZF 4657.056.050 |
| Max Input Torque | 2,100 Nm |
| Number of Speeds | 6 Forward / 3 Reverse |
Compatibility
This complete assembly is engineered specifically for the ZF WG 210 series transmissions. It is directly compatible with models including the WG 180, WG 200, and WG 210 variants used in construction and agricultural equipment. The unit also fits select ZF 6 WG 200 and 6 WG 210 applications where the original housing and clutch configuration match. For proper installation, ensure the HOUS.FRONT SECT and HOUSING REAR PART are aligned correctly. Secure the assembly using the CYLINDRICAL PIN to prevent misalignment during torque application.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101034 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201027 | HOUS.FRONT SECT | Front section housing input shaft |
| 4657201012 | HOUSING REAR PART | Rear section supporting output flange |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | Fastener for housing joints |
| 4656301148 | FIXING PLATE | Retains clutch pack assembly |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | High-torque fastener for bell housing |
| 4681301040 | OIL FEED.HOUSG. | Distributes pressurized oil to clutches |
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