Overview
The ZF 4642.054.019 4 WG 150 Powershift Transmission Assembly is a complete, factory-engineered unit designed for heavy-duty off-highway machinery. This assembly integrates the torque converter, planetary gear sets, and hydraulic control system into a single, ready-to-install package. As the core power transfer module for the WG 150 series, it manages high-torque loads in wheel loaders, dozers, and material handlers. The SKU 4642.054.019 replaces worn or failed assemblies, restoring original shift quality and driveline efficiency. This complete unit eliminates the need for piecemeal repairs, ensuring that the TRANSMISSION HOUSING and internal components are perfectly matched from the factory.
Symptoms of Failure
- Delayed or harsh engagement: When the 4 WG 150 assembly wears, operators experience a noticeable lag between shifting and gear engagement, often accompanied by a jarring clunk. This indicates internal clutch pack or seal degradation.
- Torque converter shudder under load: A vibration or shudder during acceleration, particularly in lower gears, signals failing stator bearings or worn friction discs within the assembly.
- External oil seepage at housing joints: Leaks typically develop around the mating surfaces of the TRANSMISSION HOUSING and the main case, leading to low fluid levels and eventual overheating.
- Loss of power in forward or reverse: Slipping in one direction only points to a failed directional clutch or a cracked piston, requiring immediate replacement of the complete assembly.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4642.054.019 |
| Assembly Type | Complete Powershift Unit |
| Series | WG 150 (4-speed) |
| 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 |
| OEM Reference | ZF 4642.054.019 |
| Torque Capacity | Up to 1,500 Nm |
Compatibility
This complete assembly is specifically engineered for the ZF WG 150 series transmissions. It is directly compatible with models including the WG 150, WG 151, and WG 152 used in construction equipment. While the WG 180 and WG 200 series share similar architecture, this unit is not a direct cross-fit for those larger frames. For identification, always verify the TYPE PLATE on your existing unit. The assembly mounts using four GROOVED STUD fasteners at the bellhousing interface.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101108 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4642301208 | TRANSMISSION HOUSING | Rear housing section for output shaft |
| 0730365125 | TYPE PLATE | Identification plate with serial number |
| 0631311009 | GROOVED STUD | Mounting fastener for bellhousing |
| 4642301168 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4642301169 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100621 | HEXAGON SCREW | Fastener for valve body cover |
| 0630361029 | SEALING CAP | Pressure test port plug |
| 4642306254 | ADAPTER | Converter-to-engine mounting plate |
| 0634303340 | O-RING | Hydraulic seal for housing joint |
