Overview
The ZF 4657.056.069 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully assembled, drop-in ready gearbox core designed for heavy-duty off-highway machinery. This complete unit integrates the clutch packs, planetary gearsets, and hydraulic control system within a single robust housing. As a direct replacement for the WG 210 series, it delivers seamless power flow and torque management in wheel loaders, dozers, and material handlers. The SKU 4657.056.069 identifies this as a factory-spec assembly, ensuring precise fitment without modification. The unit mounts directly to the engine bellhousing and connects to the driveline via the output flange, with the TRANSMISSION HOUSING forming the structural backbone that contains all rotating components.
Symptoms of Failure
- Delayed or harsh engagement: When the complete unit wears, operators notice a pronounced lag between shifting and actual gear engagement, often accompanied by a jarring clunk.
- Internal oil leaks and low pressure: Cracks in the housing or worn seals cause transmission fluid to pool under the machine, leading to erratic shifting and overheating.
- Gear slipping under load: The assembly may lose torque transfer during heavy digging or climbing, causing the engine to rev without corresponding wheel movement.
- Unusual whining or grinding noises: Worn bearings or damaged planetary gears produce a high-pitched whine that intensifies with speed, signaling imminent failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.056.069 |
| Series | WG 210 (6-speed powershift) |
| Overall Length | ~720 mm (28.3 in) |
| Dry Weight | ~195 kg (430 lbs) |
| Housing Material | High-strength cast iron |
| OEM Reference | ZF 6 WG 210 |
| Max Input Torque | 2,100 Nm (1,549 lb-ft) |
| Fluid Capacity | ~18 liters (4.75 gal) |
Compatibility
This complete unit is engineered for the ZF WG 210 series, but its core architecture shares mounting patterns and hydraulic logic with the WG 180 and WG 200 families. It is a direct fit for models such as the 6 WG 210, 4 WG 210, and select variants of the WG 200 used in compact loaders. The assembly requires the HOUS.FRONT SECT and HOUSING REAR PART to be correctly aligned during installation, while the CYLINDRICAL PIN ensures precise dowel alignment between sections. Always verify the bellhousing pattern and output flange configuration before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201027 | HOUS.FRONT SECT | Front section supporting input shaft |
| 4657201012 | HOUSING REAR PART | Rear section housing output bearing |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel between housing sections |
| 0636100801 | CAP SCREW | Fastener for housing assembly |
| 4656301148 | FIXING PLATE | Secures clutch pack retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | Bolt for valve body attachment |
| 4681301040 | OIL FEED.HOUSG. | Lubrication supply manifold |
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