Overview
The ZF 4657.056.100 6 WG 210 Powershift Transmission Assembly represents a complete, factory-grade replacement unit engineered for heavy-duty off-highway machinery. As the core hydraulic-mechanical assembly within the WG 210 series, this unit integrates the torque converter, planetary gear sets, and clutch packs into a single, ready-to-install package. The SKU 4657.056.100 is specifically designed to restore original ZF performance in wheel loaders, dozers, and material handlers. This assembly sits directly between the engine flywheel and the final drive, managing power distribution through six forward and three reverse speeds. For proper installation, the assembly must be mated with a structurally sound TRANSMISSION HOUSING to ensure correct alignment and oil circulation.
Symptoms of Failure
- Delayed engagement or gear slipping under load: When the internal clutch packs or valve body wear, operators experience hesitation when shifting from neutral to forward or reverse, particularly on inclines.
- External oil leaks at housing seams: Degraded seals between the HOUS.FRONT SECT and the main casing allow hydraulic fluid to escape, leading to low pressure and eventual transmission failure.
- Erratic shifting or harsh engagement: Worn planetary bearings or scored drums cause abrupt gear changes, often accompanied by metallic grinding noises during direction changes.
- Overheating and burnt oil smell: Internal wear generates excessive friction, causing the transmission fluid to darken and emit a distinct burnt odor, indicating imminent clutch pack failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| ZF Part Number | 4657.056.100 |
| Series | WG 210 (6 WG 210) |
| Type | Powershift Transmission Assembly (Complete Unit) |
| Weight (approx.) | 385 kg (849 lbs) |
| Overall Length | 720 mm |
| Overall Width | 510 mm |
| Overall Height | 580 mm |
| Housing Material | High-tensile cast iron |
| OEM Reference | ZF 4657.056.100 |
| Torque Converter Diameter | 340 mm |
| Number of Speeds | 6 Forward / 3 Reverse |
| Max Input Power | 210 kW (282 hp) |
| Max Input Torque | 1,100 Nm |
Compatibility
This complete unit is specifically engineered for the ZF WG 210 series powershift transmissions. It is directly compatible with the WG 210 model and can be adapted for use in the WG 180 and WG 200 series with appropriate modifications to the HOUSING REAR PART. The assembly also fits select variants of the WG 211 and WG 220 series used in articulated dump trucks and large wheel loaders. Always verify the rear housing configuration; for machines requiring a different output flange, the HOUSING REAR SECTION must be ordered separately to match the driveline yoke.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101079 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 4657201166 | HOUS.FRONT SECT | Front section housing torque converter and pump drive |
| 4657201169 | HOUSING REAR PART | Rear casing for output shaft and parking brake |
| 4657298104 | HOUSING REAR SECTION | Alternate rear section for different output flange configurations |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise housing mating |
| 0636100801 | CAP SCREW | M16 bolt for securing housing sections |
| 4656301148 | FIXING PLATE | Locking plate for clutch pack retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil sump protection |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for high-flow circuits |
| 0636100803 | CAP SCREW | M12 bolt for valve body and cover attachment |
