Overview
The ZF 4657.056.210 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully integrated drop-in solution for heavy-duty off-highway machinery. This complete assembly houses the core gear train, clutch packs, and hydraulic control system within a robust casing, designed to handle high torque loads in construction, mining, and agricultural equipment. The SKU 4657.056.210 represents a factory-matched unit, ensuring precise alignment of all internal components. It sits as the central power transfer module, connecting the engine to the driveline. For structural integrity, this assembly is often paired with the 4657101082: TRANSMISSION HOUSING, which provides the primary mounting base, and the 4657201166: HOUS.FRONT SECT that seals the front input area.
Symptoms of Failure
When the ZF 4657.056.210 complete unit begins to degrade, operators will notice distinct operational issues. Oil leaks at the main housing seams are a common first sign, often caused by gasket fatigue or housing cracks. Gear slipping under load occurs when internal clutch packs lose hydraulic pressure, leading to erratic power delivery. Delayed engagement or harsh shifting between forward and reverse gears indicates wear in the valve body or planetary sets. Unusual whining or grinding noises from the transmission bell housing suggest bearing failure or gear tooth damage, requiring immediate inspection.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.056.210 |
| Assembly Type | Complete Powershift Unit (6 WG 210) |
| Overall Length | ~850 mm |
| Dry Weight | ~320 kg |
| Housing Material | High-Grade Cast Iron (GGG-40) |
| OEM Reference | ZF 6 WG 210 Series |
| Input Torque Capacity | ~2100 Nm |
| Mounting Configuration | SAE 3 Bell Housing |
Compatibility
This 4657.056.210 complete unit is engineered for the ZF WG 210 series, but it also serves as a direct replacement in several adjacent models. It is fully compatible with WG 180 and WG 200 transmissions when used with the correct adapter kit. The assembly also fits WG 211 and WG 212 variants found in articulated dump trucks and wheel loaders. For proper sealing, ensure the 4657201170: HOUSING REAR PART and the 4657298102: HOUSING REAR SECTION are inspected for cracks during installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear support |
| 4657201166 | HOUS.FRONT SECT | Front section housing input shaft |
| 4657201170 | HOUSING REAR PART | Rear casing for output bearing support |
| 4657298102 | HOUSING REAR SECTION | Extended rear cover for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating |
| 0636100801 | CAP SCREW | M12 fastener for housing bolts |
| 4656301148 | FIXING PLATE | Locking plate for clutch pack retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic oil |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | M16 bolt for bell housing attachment |
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