Overview
The ZF 4642.054.069 4 WG 150 Powershift Transmission Assembly is a complete, factory-matched unit engineered for heavy-duty off-highway applications. This fully assembled gearbox integrates the torque converter, clutch packs, and final drive into a single, ready-to-install module. As the core power transfer component in the WG 150 series, it replaces the need for individual sub-assembly sourcing. The SKU 4642.054.069 ensures precise OEM fitment and eliminates guesswork during drivetrain overhauls. This assembly sits directly between the engine flywheel housing and the axle differential, managing all gear ratio changes under load.
Symptoms of Failure
- Delayed engagement or gear slipping under load: When the internal clutch packs wear, operators notice hesitation when shifting from neutral to forward or reverse, especially on inclines.
- Torque converter shudder at low RPM: A distinct vibration during inching or creep operations indicates stator or turbine wear within the 4 WG 150 assembly.
- External oil leaks near the bell housing: Seepage from the pump drive seal or housing gasket often appears as drips on the bell housing, requiring replacement of the TRANSMISSION HOUSING or TRANSMISSION HOUSING.
- Erratic shift patterns or no movement: Complete loss of hydraulic pressure, often traced to a cracked valve body or failed shift solenoid within the assembly.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4642.054.069 |
| Assembly Type | Complete Powershift Transmission |
| Series | WG 150 (4-speed) |
| Dry Weight (approx.) | 285 kg (628 lbs) |
| Overall Length | 620 mm |
| Housing Material | High-strength cast iron |
| Torque Converter Diameter | 340 mm |
| Max Input Torque | 1,500 Nm |
| Oil Capacity | 18 liters (ZF TE-ML 03 fluid) |
| OEM Reference | ZF 4 WG 150 |
Compatibility
This complete unit is designed specifically for the ZF WG 150 series. It is also compatible with select variants of the WG 180 and WG 200 series when used with the correct adapter plate. The assembly fits wheel loaders, telehandlers, and industrial tractors from manufacturers such as Liebherr, JCB, and Caterpillar that utilize ZF drivetrains. Always verify the bell housing pattern; the TYPE PLATE affixed to the housing confirms the exact model variant. For secure mounting, the GROOVED STUD is used at critical bolt locations to prevent loosening under vibration.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101047 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4642301207 | TRANSMISSION HOUSING | Alternate housing variant for WG 150 |
| 0730365067 | TYPE PLATE | Identification plate with serial number |
| 0631311009 | GROOVED STUD | Anti-rotation mounting fastener |
| 4642301168 | SCREEN SHEET | Oil filter screen for hydraulic circuit |
| 4642301169 | SCREEN SHEET | Fine mesh screen for valve body |
| 0636100621 | HEXAGON SCREW | M12 bolt for housing flange |
| 4642301186 | SCREEN SHEET | Suction strainer for pump inlet |
| 4644106319 | SHIFT SYSTEM | Electro-hydraulic shift module |
| 4644159338 | SHIFT SYSTEM | Updated shift system with pressure sensors |
