Overview
The ZF 4657.055.308 5 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This assembly integrates the main gear cluster, clutch packs, and hydraulic control elements into a single, ready-to-install package. As a core component of the WG 210 series, it manages torque distribution across five forward speeds and one reverse, enabling smooth power shifts under load. The SKU 4657.055.308 replaces worn or failed assemblies, restoring original shift quality and driveline efficiency. It mounts directly between the TRANSMISSION HOUSING and the HOUS.FRONT SECT, forming the central power path of the transmission.
Symptoms of Failure
- Erratic or delayed shifting under load: Worn clutch discs or piston seals inside the assembly cause hesitation or harsh engagement, especially when moving from second to third gear.
- Internal hydraulic pressure loss: Cracks in the housing or degraded sealing surfaces lead to low line pressure, resulting in gear slipping or failure to hold a selected range.
- Metallic debris in the oil filter: Spalling from gear teeth or bearing surfaces generates fine metal particles, which circulate through the system and accelerate wear on the HOUSING REAR PART and adjacent components.
- Oil leaks at the housing interface: Gasket failure between the assembly and the HOUSING REAR SECTION produces visible drips and low fluid levels, compromising lubrication.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.055.308 |
| Assembly Type | 5-speed powershift, complete unit |
| Dry Weight | Approx. 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 410 mm |
| Housing Material | High-strength cast iron |
| Max Input Torque | 1,200 Nm (885 lb-ft) |
| Fluid Capacity (assembly only) | 8.5 liters |
| OEM Reference | ZF 5 WG 210 |
Compatibility
This complete assembly is engineered for the ZF WG 210 series, which includes models such as the 5 WG 210, 5 WG 200, and 5 WG 180. It is also backward-compatible with certain WG 170 variants when used with the correct TRANSMISSION HOUSING. The unit is commonly found in telescopic handlers, wheel loaders, and industrial forklifts from manufacturers like Manitou, JCB, and Linde. Always verify the bellhousing pattern and output flange configuration against your existing HOUS.FRONT SECT before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101085 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 4657201161 | HOUS.FRONT SECT | Front section housing input shaft and pump drive |
| 4657201162 | HOUSING REAR PART | Rear section enclosing output shaft and parking brake |
| 4657298107 | HOUSING REAR SECTION | Alternate rear housing variant for specific PTO configurations |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing-to-assembly positioning |
| 0636100801 | CAP SCREW | M12 fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Locking plate for clutch piston retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit protection |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump return line |
| 0636100803 | CAP SCREW | M10 fastener for screen sheet retention |
