Overview
The ZF 4661.043.056 3 WG 94 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This assembly integrates the main gear cluster, clutch packs, and hydraulic control elements into a single drop-in replacement for the WG 94 series. As the core power transfer module, it sits between the torque converter and the output driveline, managing all forward and reverse speed ranges. The SKU 4661.043.056 identifies this specific 3-speed configuration, ensuring correct gear ratios and shift timing for your machine. When replacing this assembly, always inspect the mating 4661101046: HOUSING and the 4661301125: HOUSING II for wear, as these components seal the main case and support the output shaft.
Symptoms of Failure
- Delayed or harsh engagement when shifting from neutral to forward: Worn clutch discs or piston seals inside the assembly cause a noticeable lag or a jarring engagement, often accompanied by a drop in hydraulic pressure.
- Intermittent gear slipping under load: As internal seals degrade, the transmission loses clamping force on the clutches, leading to RPM flare without corresponding vehicle speed increase, particularly on inclines.
- External oil leaks from the main case seam or output shaft area: Cracks in the assembly housing or failed gaskets allow transmission fluid to escape, leaving puddles under the machine and reducing lubrication to critical bearings.
- Unusual whining or grinding noises during operation: Bearing fatigue or gear tooth damage within the 4661.043.056 assembly generates metallic sounds that worsen with higher engine RPM.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number / SKU | 4661.043.056 |
| Assembly Type | 3-Speed Powershift (WG 94 Series) |
| Overall Length (approx.) | 580 mm |
| Overall Width (approx.) | 420 mm |
| Dry Weight (approx.) | 95 kg |
| Primary Material | High-strength cast iron with hardened steel gears |
| OEM Reference | ZF 4661.043.056 |
| Max Input Torque (est.) | 1,200 Nm |
| Hydraulic Pressure Range | 14–18 bar |
Compatibility
This complete unit is engineered specifically for the ZF WG 94 series powershift transmissions. It is a direct fit for models including the WG180, WG200, and WG211 used in wheel loaders, telehandlers, and industrial tractors. The 4661.043.056 assembly also serves as a replacement in certain WG150 variants when upgraded to a 3-speed configuration. Verify your transmission model plate before ordering; the 0769123894: TYPE PLATE provides the exact series and build number for cross-referencing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101046 | HOUSING | Main case housing for input shaft and clutch pack |
| 4661301125 | HOUSING II | Rear housing supporting output shaft and bearings |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for precise housing assembly |
| 0769123894 | TYPE PLATE | Identification plate with serial number and model |
| 0750100022 | SCREW PLUG | Seals hydraulic test ports on the valve body |
| 4660201008 | SCREW PLUG | Drain plug for the main sump cavity |
| 0636100117 | SCREW PLUG | Plug for the pressure tap on the clutch feed |
| 0501211384 | VALVE | Modulating valve for shift pressure control |
| 0732042156 | COMPRESSION SPRING | Return spring for the clutch piston |
| 0768409154 | SCREW PLUG | Plug for the cooler return line port |
