Overview
The ZF 4657.056.052 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 circuits into a single, ready-to-install package. As the core of the WG 210 series, it manages torque distribution across six forward speeds, ensuring smooth power delivery under extreme loads. The SKU 4657.056.052 is a direct OEM replacement, eliminating the need for partial rebuilds. When installing this unit, ensure the TRANSMISSION HOUSING is properly aligned to prevent misalignment stress on the main shaft.
Symptoms of Failure
- Delayed engagement or gear slipping under load: Worn internal clutch discs or hydraulic seal degradation within the 4657.056.052 assembly cause intermittent power loss, especially when shifting from neutral to drive.
- External oil leaks near the bell housing: Cracks in the HOUS.FRONT SECT or gasket failure allow transmission fluid to weep, leading to low pressure and eventual overheating.
- Erratic shifting or harsh engagement: Contaminated valve body passages or a failing torque converter lockup clutch produce jarring shifts and abnormal vibration during acceleration.
- Whining or grinding noise from the rear section: Bearing wear in the HOUSING REAR PART creates metallic sounds, often accompanied by metal particles in the oil pan.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.056.052 |
| 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-strength cast iron (GGG-40) |
| Max Input Torque | 2,100 Nm |
| Fluid Capacity | 28 liters (SAE 10W-30) |
| Mounting Hardware | CAP SCREW (M12 x 1.75, grade 10.9) |
| Sealing Kit | GROOVED STUD and O-rings included |
Compatibility
This complete unit is engineered for the ZF WG 210 series, but it also retrofits into earlier WG 180 and WG 200 models with minor adapter modifications. It is directly compatible with the following ZF transmission families: WG 180, WG 200, WG 210, and WG 220. The assembly uses a standard SAE 3 bell housing pattern, making it suitable for engines from 150 to 350 hp. For proper installation, the CYLINDRICAL PIN must be inserted into the alignment bore to ensure concentricity between the transmission and the engine flywheel housing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101030 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201028 | HOUS.FRONT SECT | Front section housing pump and converter |
| 4657201021 | 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 | Locks bearing preload |
| 4657301034 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | Bolt for valve body cover |
| 0631311009 | GROOVED STUD | Threaded stud for oil pan attachment |
