Overview
The ZF 4657.056.148 6 WG 210 Powershift Transmission Assembly | Complete Unit is a fully assembled drop-in solution designed for heavy-duty off-highway machinery. This complete unit integrates the main gear cluster, clutch packs, and hydraulic control system within a single robust housing. As a core component of the WG 210 Series, it manages torque distribution across six forward speeds, ensuring smooth power delivery under extreme loads. The SKU 4657.056.148 is factory-matched to the TRANSMISSION HOUSING to maintain precise alignment of all rotating assemblies.
Symptoms of Failure
- Delayed or harsh gear engagement: When the internal clutch packs or hydraulic seals degrade, operators experience a noticeable lag or jarring shift between forward and reverse gears.
- Chronic oil leaks at housing seams: Worn gaskets or cracks in the HOUS.FRONT SECT or HOUSING REAR PART allow transmission fluid to escape, leading to low pressure and overheating.
- Intermittent power loss under load: A failing unit causes the machine to lose traction or speed when climbing grades or pushing heavy material, often accompanied by a whining noise from the gear train.
- Metal debris in the oil pan: Advanced wear of bearings or gears produces metallic particles that clog the SCREEN SHEET filters, accelerating internal damage.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.056.148 |
| Assembly Type | Complete Powershift Unit (6 WG 210) |
| Dry Weight | ~185 kg (408 lbs) |
| Housing Material | High-strength cast iron (GGG-40) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Max Input Torque | 2,100 Nm |
| Fluid Capacity | 22 liters (with cooler circuit) |
| OEM Reference | ZF 6 WG 210 |
Compatibility
This complete unit is engineered specifically for the ZF WG 210 Series powershift transmissions. It is a direct fit for models including the WG180, WG200, and WG210 used in loaders, graders, and industrial tractors. The assembly interfaces with the HOUSING REAR SECTION and requires the use of CAP SCREW fasteners (M12 x 1.5) for secure mounting. Always verify the serial number range on your existing transmission before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing input shaft |
| 4657201170 | HOUSING REAR PART | Rear casing supporting output flange |
| 4657298102 | HOUSING REAR SECTION | Intermediate rear housing adapter |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M12 bolt for front housing fastening |
| 4656301148 | FIXING PLATE | Locks bearing preload adjustment |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil return line |
| 4657301033 | SCREEN SHEET | Coarse mesh filter for suction line |
| 0636100803 | CAP SCREW | M16 bolt for rear housing mounting |
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