Overview
The ZF 4657.056.056 6 WG 210 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway machinery. This assembly integrates the main gear cluster, clutch packs, and hydraulic control components into a single, ready-to-install package. As the core power delivery module in the WG 210 series, it replaces the entire rotating assembly within the main casing. The SKU 4657.056.056 is a direct OEM reference for a fully assembled transmission core, ensuring precise fitment and performance restoration. When rebuilding a WG 210, this assembly mates directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to form the complete driveline enclosure.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn clutch discs or damaged seals within the assembly cause the transmission to slip when shifting from forward to reverse, especially in high-torque applications.
- Internal metallic grinding noises: Bearing fatigue or gear tooth spalling produces a distinct whining or grinding sound that increases with engine RPM, indicating imminent internal failure.
- Delayed or harsh shifting: Hydraulic pressure loss from internal wear leads to a noticeable lag between gear selection and engagement, often accompanied by a jarring shift.
- Contaminated transmission fluid with debris: Friction material shedding from the clutch packs turns the oil dark and gritty, which can clog the CYLINDRICAL PIN passages and restrict lubrication flow.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4657.056.056 |
| 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 |
| Primary Material | High-strength cast iron & alloy steel |
| OEM Reference | ZF 4657.056.056 |
| Related Fastener | CAP SCREW (0636100801) |
| Related Fastener | CAP SCREW (0636100803) |
| Mounting Plate | FIXING PLATE (4656301148) |
| Oil Screen | SCREEN SHEET (4657301034) |
| Oil Screen (Alt.) | SCREEN SHEET (4657301035) |
| Oil Feed Housing | OIL FEED.HOUSG. (4681301040) |
Compatibility
This complete unit is engineered specifically for the ZF WG 210 series powershift transmissions. It is the primary rotating assembly used in the following models: WG 180, WG 200, WG 210, and WG 211. It is also compatible with select variants of the WG 160 series when used with the correct HOUSING REAR PART. Always verify the housing casting numbers before installation, as the 4657.056.056 assembly requires the corresponding front and rear sections to maintain proper gear mesh and clutch clearance.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101039 | TRANSMISSION HOUSING | Main structural casing for the gear train |
| 4657201028 | HOUS.FRONT SECT | Front section housing for input shaft support |
| 4657201013 | HOUSING REAR PART | Rear section housing for output shaft and PTO |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 0636100801 | CAP SCREW | Fastener for housing assembly |
| 4656301148 | FIXING PLATE | Retains clutch pack components |
| 4657301034 | SCREEN SHEET | Primary oil filter screen |
| 4657301035 | SCREEN SHEET | Secondary oil filter screen |
| 0636100803 | CAP SCREW | Fastener for clutch housing |
| 4681301040 | OIL FEED.HOUSG. | Distributes hydraulic oil to clutch packs |
