Overview
The ZF 4657.056.087 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated, factory-built gearbox core designed for heavy-duty off-highway machinery. This complete assembly serves as the primary power transfer module within the WG 210 series, converting engine torque into controlled, multi-speed output for wheel loaders, graders, and industrial tractors. The SKU 4657.056.087 represents a remanufactured or new OEM-spec unit that includes the main gear cluster, clutch packs, and hydraulic control components. It sits centrally in the driveline, directly coupling to the TRANSMISSION HOUSING which encloses the rotating elements and provides structural rigidity.
Symptoms of Failure
- Delayed or harsh gear engagement: When the complete unit wears, internal clutch piston seals degrade, causing sluggish shifts or violent engagement under load.
- Chronic hydraulic oil leaks: Cracks in the main casing or worn gaskets around the HOUS.FRONT SECT allow ATF to weep externally, leaving puddles under the machine.
- Torque converter shudder: A failing stator or worn turbine hub within the assembly produces low-speed vibration and loss of pulling power.
- Metal debris in the oil pan: Internal gear tooth spalling or bearing race fragmentation generates metallic particles, indicating imminent catastrophic failure.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.056.087 |
| Series | WG 210 (6-speed powershift) |
| Dry Weight (approx.) | 285 kg (628 lbs) |
| Overall Length | 720 mm |
| Overall Width | 510 mm |
| Overall Height | 580 mm |
| Housing Material | High-strength cast iron (GGG-40) |
| Input Torque Capacity | 2,100 Nm (1,550 lb-ft) |
| Fluid Capacity | 22 liters (5.8 gal) |
| OEM Reference | ZF 6 WG 210 |
Compatibility
This complete unit is engineered for the ZF WG 210 transmission family. It is directly compatible with models including the WG180, WG200, and WG210 series used in Volvo, Case, and Caterpillar loaders. The assembly also fits select WG160 variants when paired with the correct HOUSING REAR PART adapter. For precise alignment during installation, the CYLINDRICAL PIN ensures dowel-pin registration between the front and rear housing sections.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101039 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201028 | HOUS.FRONT SECT | Front section enclosing torque converter |
| 4657201013 | HOUSING REAR PART | Rear section supporting output shaft |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | Fastener for housing joints |
| 4656301148 | FIXING PLATE | Retains clutch pack assembly |
| 4657301034 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | Bolt for valve body attachment |
| 4681301040 | OIL FEED.HOUSG. | Lubrication oil distribution manifold |
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