Overview
The ZF 4657.056.104 6 WG 210 Powershift Transmission Assembly is a complete, factory-engineered unit designed for heavy-duty off-highway applications. This assembly serves as the core power transfer module within the WG 210 series, integrating the torque converter, planetary gear sets, and hydraulic control system into a single, ready-to-install package. The SKU 4657.056.104 is a direct replacement for worn or failed transmissions in wheel loaders, graders, and material handlers, ensuring original equipment performance and durability. It sits centrally in the drivetrain, converting engine torque into controlled, multi-speed output for demanding work cycles.
Symptoms of Failure
- Erratic gear engagement or slipping under load: When the internal clutch packs or hydraulic seals degrade, operators experience delayed or rough shifting, especially when reversing or climbing grades. This is a common long-tail search query for “ZF WG210 transmission slipping.”
- External oil leaks from housing seams: Cracks or gasket failures in the TRANSMISSION HOUSING or HOUS.FRONT SECT allow transmission fluid to escape, leading to low oil levels and eventual overheating.
- Abnormal noise (whining or grinding) from the rear section: Worn bearings or gear damage in the HOUSING REAR PART or HOUSING REAR SECTION produce metallic sounds during operation, indicating imminent internal failure.
- Delayed forward/reverse shuttle response: A complete unit that fails to engage quickly signals advanced wear in the valve body or torque converter, often accompanied by a loss of machine productivity.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.056.104 |
| Assembly Type | Complete Powershift Transmission |
| Series | WG 210 (6-speed) |
| Dry Weight (approx.) | 385 kg (849 lbs) |
| Overall Length | 720 mm |
| Overall Width | 510 mm |
| Overall Height | 580 mm |
| Housing Material | High-strength cast iron |
| OEM Reference | ZF 4657.056.104 |
| Torque Converter Type | Single-stage, dual-phase |
Compatibility
This complete unit is engineered for the ZF WG 210 series, but its core architecture shares components with the WG 180 and WG 200 families. It is a direct fit for models such as the WG 211, WG 212, and WG 215, commonly used in Volvo L120, Caterpillar 950, and Case 921 wheel loaders. The assembly also interfaces with earlier WG 160 variants when using adapter plates. Always verify your transmission model suffix before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101079 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing torque converter |
| 4657201169 | HOUSING REAR PART | Rear casing for output shaft |
| 4657298104 | HOUSING REAR SECTION | Extended rear cover for PTO mount |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | M12 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Locks bearing in position |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M14 bolt for rear housing |
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