Overview
The ZF 4657.056.302 6 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This assembly serves as the central power distribution hub within the WG 210 series, integrating the torque converter, planetary gear sets, and hydraulic control system into a single, ready-to-install package. The SKU 4657.056.302 is a direct replacement for worn or failed transmissions, restoring full clutch modulation and shift quality. During installation, the HOUS.FRONT SECT (4657201161) must be inspected for wear, as it supports the input shaft and aligns the entire driveline.
Symptoms of Failure
- Delayed or harsh engagement: When the 4657.056.302 assembly wears internally, you may experience a pronounced lag between selecting a gear and actual engagement, often followed by a jarring shift. This indicates worn clutch packs or valve body degradation.
- Transmission overheating under load: A failing unit will generate excessive heat due to internal slippage. Operators may notice the temperature gauge climbing rapidly during grading or loading cycles.
- External oil seepage at mating flanges: Deteriorating seals within the assembly lead to fluid leaks around the bell housing or output flange. Check the condition of the O-RING (0634313603) during service, as it is a common leak point.
- Unusual noise (whining or grinding): A high-pitched whine in neutral or a grinding sound during shifts signals bearing failure or gear tooth damage inside the complete unit.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.056.302 |
| Series | WG 210 (6-speed Powershift) |
| Overall Length (approx.) | 780 mm |
| Dry Weight (approx.) | 285 kg (628 lbs) |
| Housing Material | High-grade cast iron |
| Input Torque Capacity (max) | 2,100 Nm |
| OEM Reference | ZF 4657.056.302 |
| Fluid Capacity (system) | 22 liters |
Compatibility
This complete assembly is engineered specifically for the ZF WG 210 transmission series. It is also compatible with earlier WG 180 and WG 200 models when used as a complete unit replacement, provided the torque converter housing matches. The 4657.056.302 is commonly found in telehandlers, wheel loaders, and dump trucks from manufacturers like Manitou, JCB, and Volvo CE. When installing, always replace the 螺栓 (0636115293) and the CYLINDRICAL PIN (0631306816) to ensure proper alignment and clamping force.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657201161 | HOUS.FRONT SECT | Front housing section supporting input shaft |
| 0636115293 | 螺栓 | Mounting bolt for transmission casing |
| 0634313603 | O-RING | Seal for hydraulic passages |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0636100801 | CAP SCREW | Fastener for valve body cover |
| 4656301148 | FIXING PLATE | Retaining plate for clutch pack |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | Bolt for oil pan attachment |
| 4681301040 | OIL FEED.HOUSG. | Housing for lubrication oil feed |
