Overview
The ZF 4657.056.068 6 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. As the core hydraulic-mechanical assembly in the WG 210 series, this unit integrates the torque converter, planetary gear sets, and clutch packs into a single sealed housing. The SKU 4657.056.068 serves as the direct replacement for worn or failed transmissions in wheel loaders, forklifts, and industrial tractors. This complete assembly eliminates the need for piecemeal rebuilding, ensuring precise gear engagement and consistent power delivery under extreme load cycles.
Symptoms of Failure
- Delayed or harsh engagement – When the transmission hesitates before moving forward or reverse, or slams into gear, internal clutch pack wear or hydraulic pressure loss is present.
- Torque converter shudder under load – A vibration or chatter during acceleration indicates stator or turbine damage within the assembly.
- External oil leaks at the housing joints – Seepage around the TRANSMISSION HOUSING or HOUS.FRONT SECT signals gasket failure or housing cracks, leading to low fluid levels and overheating.
- Gear slippage in higher ranges – The transmission unexpectedly drops out of gear or fails to hold speed on inclines, pointing to worn clutches or a failing HOUSING REAR PART alignment.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4657.056.068 |
| Assembly Type | Complete Powershift Transmission (6 WG 210) |
| Overall Length | 785 mm (estimated) |
| Overall Width | 510 mm (estimated) |
| Dry Weight | 285 kg (estimated) |
| Housing Material | High-grade cast iron (GGG-40) |
| OEM Reference | ZF 4657.056.068 |
| Torque Capacity | 2100 Nm (max input) |
| Number of Speeds | 6 forward / 3 reverse |
| Mounting Interface | SAE 3 bellhousing pattern |
Compatibility
This complete unit is engineered for the ZF WG 210 series, but its core architecture also supports direct fitment into WG 180 and WG 200 series transmissions when the correct bellhousing and CYLINDRICAL PIN alignment kit is used. It is commonly installed in Liebherr, Volvo, and Caterpillar wheel loaders from the 2000–2015 era. Always verify the input flange and PTO configuration before ordering. The assembly integrates seamlessly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to maintain correct gear train geometry.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201027 | HOUS.FRONT SECT | Front section housing torque converter |
| 4657201012 | HOUSING REAR PART | Rear section supporting output shaft |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | Fastener for housing bolts |
| 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 | Fastener for valve body cover |
| 4681301040 | OIL FEED.HOUSG. | Pressurized oil distribution manifold |
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