Overview
The ZF 4657.056.071 6 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 components into a single, ready-to-install package. As a core element of the WG 210 series, it manages torque distribution across six forward speeds. The SKU 4657.056.071 is the direct replacement for worn or failed assemblies, ensuring your vehicle returns to full operational capacity. When installing this unit, the TRANSMISSION HOUSING must be inspected for cracks, and the HOUS.FRONT SECT should be checked for alignment to prevent premature wear.
Symptoms of Failure
- Erratic gear engagement or slipping under load: When the internal clutch packs or sprags within the 4657.056.071 degrade, the transmission may hesitate or fail to hold a gear, especially during uphill or loaded operation.
- Contaminated or burnt transmission fluid: Friction material shedding from the assembly often turns the oil dark and produces a sharp, burnt odor. This is a clear indicator of internal wear requiring immediate replacement.
- Audible grinding or whining from the bell housing: Worn bearings or planetary gears inside the complete unit generate a distinct mechanical noise that increases with engine RPM, signaling imminent failure.
- Delayed or no reverse engagement: A failing assembly often loses hydraulic pressure to the reverse clutch circuit, causing a significant lag or complete inability to shift into reverse.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.056.071 |
| Assembly Type | Complete Powershift Unit (6 WG 210) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-Grade Cast Iron (GGG-40) |
| OEM Reference | ZF 6 WG 210 |
| Fastener Torque (Main Housing) | 120 Nm (M12 bolts) |
Compatibility
This complete assembly is engineered specifically for the ZF WG 210 series. It is directly compatible with the WG 210, WG 211, and WG 212 models. While physically similar to the WG 180 and WG 200 series, the 4657.056.071 uses distinct clutch ratios and valve bodies; always verify the serial number against your original unit. For proper installation, the HOUSING REAR PART must be free of scoring, and the CYLINDRICAL PIN should be replaced to ensure precise dowel alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4657201027 | HOUS.FRONT SECT | Front section housing input shaft |
| 4657201012 | HOUSING REAR PART | Rear section supporting output flange |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0636100801 | CAP SCREW | M12 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Retains clutch pack assembly |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M10 bolt for valve body mounting |
| 4681301040 | OIL FEED.HOUSG. | Distributes pressurized oil to clutches |
