Overview
The ZF 4657.056.308 6 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This assembly integrates the main drive housing, clutch packs, and hydraulic control components into a single, ready-to-install package. As the core of the WG 210 series, it manages torque distribution across six forward and three reverse gears. The SKU 4657.056.308 replaces worn or failed assemblies, restoring full power transfer in loaders, graders, and industrial tractors. When installing this unit, ensure the HOUS.FRONT SECT (4657201161) is properly aligned to prevent misalignment stress on the main shaft.
Symptoms of Failure
- Delayed engagement or gear slipping under load: Worn clutch discs or hydraulic seal degradation inside the assembly cause hesitation when shifting from neutral to drive, especially on inclines.
- External oil leaks near the bell housing: Cracks in the main casing or degraded gaskets allow transmission fluid to escape, often visible as drips after shutdown.
- Unusual whining or grinding noises during acceleration: Bearing wear or gear tooth damage within the assembly produces metallic sounds that intensify with RPM.
- Erratic shifting or failure to hold gear: Internal valve body contamination or piston seal failure leads to random upshifts or complete loss of drive in specific ranges.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4657.056.308 |
| Assembly Type | Complete Powershift Transmission Unit |
| Dry Weight | Approx. 285 kg (628 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-strength cast iron (GGG-40) |
| Max Input Torque | 2,100 Nm |
| Fluid Capacity | 18.5 liters (with cooler lines) |
| OEM Reference | ZF 6 WG 210 |
| Mounting Bolts | Requires 螺栓 (0636115293) for bell housing |
Compatibility
This complete assembly is engineered for the ZF WG 210 series transmission family. It is directly compatible with models WG 180, WG 200, and WG 210 used in construction equipment from manufacturers like Volvo, Case, and JCB. The unit also fits select WG 160 variants with adapter plates. For proper sealing during installation, always replace the O-RING (0634313603) on the input shaft. Additionally, secure the clutch housing with a new CYLINDRICAL PIN (0631306816) to maintain concentric alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657201161 | HOUS.FRONT SECT | Front housing section for main shaft support |
| 0636115293 | 螺栓 | Hex bolt for bell housing attachment |
| 0634313603 | O-RING | Seal for input shaft oil passage |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing doweling |
| 0636100801 | CAP SCREW | M12 cap screw for clutch pack retention |
| 4656301148 | FIXING PLATE | Locking plate for output flange |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | M10 cap screw for valve body cover |
| 4681301040 | OIL FEED.HOUSG. | Oil feed housing for clutch lubrication |
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