Overview
The ZF 4657.056.063 6 WG 210 Powershift Transmission Assembly is a complete, factory-engineered unit designed for heavy-duty industrial and agricultural machinery. This assembly serves as the central power distribution hub within the WG 210 series, managing torque flow from the engine to the drivetrain through six forward gears and one reverse. The SKU 4657.056.063 integrates the main housing, clutch packs, and valve body into a single ready-to-install module. When rebuilding a transmission, this assembly works in conjunction with the TRANSMISSION HOUSING to ensure structural integrity and precise gear alignment.
Symptoms of Failure
- Delayed or harsh gear engagement: Worn internal seals or clutch plates within the 4657.056.063 cause hesitation when shifting from neutral to drive, often accompanied by a jarring thud.
- Progressive oil leaks at the bell housing: Degraded gaskets or cracked casings lead to fluid seepage around the front section, commonly misdiagnosed as a simple seal failure.
- Intermittent gear slipping under load: When the transmission loses hydraulic pressure due to internal wear, the unit slips out of gear during uphill climbs or heavy towing, triggering fault codes.
- Unusual whining or grinding noises: Bearing fatigue inside the assembly produces a metallic whine that intensifies with engine RPM, indicating imminent component failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4657.056.063 |
| Assembly Type | Complete Powershift Unit (6 WG 210) |
| Overall Length | ~720 mm |
| Dry Weight | ~185 kg (408 lbs) |
| Housing Material | High-tensile cast iron |
| OEM Reference | ZF 6 WG 210 |
| Max Input Torque | 2,100 Nm |
| Fluid Capacity | ~28 liters (with cooler lines) |
| Bolt Torque (housing) | 120 Nm (M12 bolts) |
Compatibility
This complete assembly is specifically engineered for the ZF WG 210 series, but it also shares mounting patterns and hydraulic interfaces with the WG 180 and WG 200 series. It is a direct replacement for units in Case IH Steiger, John Deere 9000, and New Holland TJ tractors. For proper installation, ensure the HOUS.FRONT SECT and HOUSING REAR PART are free from cracks. The CYLINDRICAL PIN must be replaced during reassembly to maintain dowel alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101039 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201028 | HOUS.FRONT SECT | Front section housing input shaft |
| 4657201013 | HOUSING REAR PART | Rear section supporting output flange |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0636100801 | CAP SCREW | Fastener for housing bolts |
| 4656301148 | FIXING PLATE | Secures clutch pack retaining ring |
| 4657301034 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter for oil pump |
| 0636100803 | CAP SCREW | M10 bolt for valve body mounting |
| 4681301040 | OIL FEED.HOUSG. | Distributes pressurized oil to clutch packs |
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