Overview
The ZF 4657.055.302 5 WG 210 Powershift Transmission Assembly is a complete, factory-grade unit engineered for heavy-duty off-highway machinery. This assembly serves as the central power distribution hub within the WG 210 series, managing torque flow across five forward speeds. The SKU 4657.055.302 integrates the main housing, clutch packs, and hydraulic control circuits into a single ready-to-install package. When rebuilding a transmission, this complete unit replaces the worn core, and it is frequently paired with a new HOUS.FRONT SECT to ensure proper alignment of the input shaft and bearing preload.
Symptoms of Failure
- Erratic gear engagement under load: When the 4657.055.302 assembly wears internally, operators report delayed or harsh shifting, particularly when transitioning from neutral to forward. This often accompanies a loss of hydraulic pressure.
- External oil seepage from the main housing seam: A common long-tail search query is “ZF WG210 oil leak between housing sections.” This occurs when the sealing surfaces degrade, requiring replacement of the O-RING that seals the joint between the main assembly and the front section.
- Metallic debris in the transmission fluid: Worn bearings or clutch material inside the 5 WG 210 unit generate fine metal particles. This debris can clog the SCREEN SHEET filters, leading to secondary pump failure.
- Constant gear slippage in higher ranges: As internal clutches lose friction material, the transmission fails to hold torque in 4th and 5th gears, a symptom often traced to a loose 螺栓 securing the clutch drum.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.055.302 |
| Assembly Type | Complete Powershift Unit (5 Speed) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Primary Material | High-Grade Cast Iron / Steel |
| OEM Reference | ZF WG 210 Series |
| Fastener Torque Spec | Refer to CAP SCREW data sheet |
Compatibility
This complete unit is specifically designed for the ZF WG 210 series. It is a direct fit for models WG210, WG211, and WG212. While the assembly is not cross-compatible with the smaller WG180 or WG200 series without significant modification, it shares internal components such as the CYLINDRICAL PIN with the WG200 series for shift fork alignment. Always verify your transmission serial number against the 4657.055.302 casting before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657201161 | HOUS.FRONT SECT | Front housing section for input shaft support |
| 0636115293 | 螺栓 | Clutch drum retaining bolt |
| 0634313603 | O-RING | Housing joint seal |
| 0631306816 | CYLINDRICAL PIN | Shift fork alignment dowel |
| 0636100801 | CAP SCREW | Main housing fastener |
| 4656301148 | FIXING PLATE | Clutch pack retention plate |
| 4657301032 | SCREEN SHEET | Primary hydraulic filter screen |
| 4657301033 | SCREEN SHEET | Secondary hydraulic filter screen |
| 0636100803 | CAP SCREW | Bearing retainer cap screw |
| 4656301047 | OIL FEED.HOUSG. | Oil feed housing for clutch lubrication |
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