Overview
The ZF 4642.054.041 4 WG 150 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 150 series, integrating the torque converter, planetary gear sets, and hydraulic control system into a single, ready-to-install package. The SKU 4642.054.041 is a direct replacement for worn or failed assemblies, ensuring seamless integration with existing drivelines. It is mounted directly to the engine bellhousing and connects to the final drive via the output flange. For a full rebuild, this assembly is typically paired with a new TRANSMISSION HOUSING (4642101117) or the alternative TRANSMISSION HOUSING (4642301217) to guarantee structural integrity.
Symptoms of Failure
- Delayed or harsh gear engagement: When the internal clutch packs or valve body wear, operators notice a significant lag or a jarring shift when moving from neutral to forward or reverse. This is a common long-tail search query for “ZF powershift transmission engagement delay.”
- Torque converter shudder under load: A vibrating or shuddering sensation during acceleration indicates internal wear of the stator or turbine assembly within the 4 WG 150 unit.
- External oil leaks at the housing seam: Pressurized transmission fluid escaping from the main case joint is a clear sign of gasket failure or housing fatigue. This often requires replacing the TYPE PLATE (0730365125) and associated seals during reassembly.
- Loss of power in all gears: Slipping clutches or a failing torque converter cause the engine to rev without proportional vehicle movement, a classic symptom of a complete assembly needing replacement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4642.054.041 |
| Assembly Type | Complete Powershift Unit (4 WG 150) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-grade cast iron (GGG-40) |
| OEM Reference | ZF 4 WG 150 Series |
| Bolt Torque (housing) | 120 Nm (with HEXAGON SCREW 0636100621) |
| Sealing Cap | SEALING CAP 0630361029 |
| Adapter Plate | ADAPTER 4642306254 |
| O-Ring Seal | O-RING 0634303340 |
Compatibility
This complete assembly is engineered specifically for the ZF WG 150 series transmissions. It is directly compatible with all variants of the 4 WG 150, including those used in telehandlers, wheel loaders, and industrial tractors. While the WG 150 is the primary fitment, the internal architecture shares design principles with the larger WG 180 and WG 200 series. However, the 4642.054.041 unit is not a direct swap for those models without significant adapter modifications. For filter and screen maintenance, use the SCREEN SHEET 4642301168 or the SCREEN SHEET 4642301169 as required by your specific application.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101117 | TRANSMISSION HOUSING | Main structural case for the assembly |
| 4642301217 | TRANSMISSION HOUSING | Alternative housing variant |
| 0730365125 | TYPE PLATE | Identification and serial number plate |
| 0631311009 | GROOVED STUD | Alignment and mounting stud |
| 4642301168 | SCREEN SHEET | Oil filter screen element |
| 4642301169 | SCREEN SHEET | Secondary oil filter screen |
| 0636100621 | HEXAGON SCREW | Housing fastening bolt |
| 0630361029 | SEALING CAP | Port and bore sealing cap |
| 4642306254 | ADAPTER | Interface adapter for auxiliary drives |
| 0634303340 | O-RING | Hydraulic seal for adapter connections |
