Overview
The ZF 4642.056.017 6 WG 150 Powershift Transmission Assembly | Complete Unit is a fully integrated, factory-built gearbox assembly designed for heavy-duty off-highway applications. This complete unit serves as the central power transfer module within the ZF WG 150 series, managing torque distribution across six forward speeds and one reverse. The SKU 4642.056.017 denotes a complete, ready-to-install assembly that includes the main casing, clutch packs, and hydraulic control system. It sits directly between the engine flywheel and the final drive, converting rotational power into controlled vehicle motion. When replacing this assembly, technicians must also inspect the TRANSMISSION HOUSING (4642101109) and the TRANSMISSION HOUSING (4642301205) for cracks or wear, as these components form the structural backbone of the gearbox.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn clutch discs or degraded seals inside the 4642.056.017 assembly cause delayed shifts or complete loss of drive in specific gears, especially during heavy hauling.
- External oil leaks near the bell housing: Cracks in the main casing or failed gaskets allow transmission fluid to escape, often visible as drips around the GROOVED STUD (0631311009) mounting points.
- Unusual whining or grinding noises: Bearing failure or gear tooth damage within the complete unit produces metallic sounds that intensify with engine RPM, indicating imminent internal collapse.
- Loss of hydraulic pressure or overheating: A failing pump or blocked passages inside the assembly lead to sluggish operation and fluid temperatures exceeding 120°C.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4642.056.017 |
| Assembly Type | 6 WG 150 Powershift Transmission (Complete Unit) |
| Overall Length | 785 mm (estimated) |
| Dry Weight | 340 kg (estimated) |
| Housing Material | High-strength cast iron (GGG-40) |
| OEM Reference | ZF 4642.056.017 |
| Fluid Capacity | 18.5 liters (SAE 10W-30) |
| Max Input Torque | 1,500 Nm |
| Bolt Torque (Housing) | 120 Nm (M12 fasteners) |
Compatibility
This ZF 4642.056.017 complete unit is engineered for the WG 150 Series but shares core architecture with the WG 180 and WG 200 families. It directly replaces units in ZF 6 WG 150 transmissions used in telescopic handlers, wheel loaders, and agricultural tractors from 2010 onward. The assembly is also compatible with certain 4 WG 150 variants when paired with the correct TYPE PLATE (0730365125) for identification. Always verify the shift system configuration using the SHIFT SYSTEM (4644106300) before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 4642301205 | TRANSMISSION HOUSING | Secondary housing for clutch pack retention |
| 0730365125 | TYPE PLATE | Identification label with serial number and specs |
| 0631311009 | GROOVED STUD | Mounting fastener for housing alignment |
| 4642301168 | SCREEN SHEET | Oil filter mesh for hydraulic circuit |
| 4642301169 | SCREEN SHEET | Secondary filtration element |
| 0636100621 | HEXAGON SCREW | Fastener for cover plate attachment |
| 4642301186 | SCREEN SHEET | Fine mesh for valve body protection |
| 4644106300 | SHIFT SYSTEM | Hydraulic control unit for gear selection |
| 4644306500 | COVER PLATE | Sealing plate for access port |
