Overview
The ZF 4661.042.017 2 WG 94 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This fully assembled gearbox integrates the clutch packs, planetary gearsets, and hydraulic control system into a single drop-in replacement. As a core component of the WG 94 series, it governs torque distribution and speed shifting under extreme loads. The SKU 4661.042.017 is precision-machined to OEM tolerances, ensuring seamless integration with existing drivelines. This assembly sits directly between the engine flywheel and the final drive, converting rotational power into controlled motion for loaders, graders, and industrial vehicles.
Symptoms of Failure
- Delayed or harsh gear engagement – When the internal clutch packs or valve body wear, operators experience a noticeable lag or jarring shift between forward and reverse gears, often accompanied by a loss of hydraulic pressure.
- Torque converter shudder under load – A vibrating or chattering sensation during acceleration indicates worn stator bearings or damaged turbine splines within the assembly, reducing power transfer efficiency.
- External oil leaks near the bell housing – Degraded seals or cracked housing interfaces allow transmission fluid to escape, leaving puddles under the vehicle and leading to low fluid levels and overheating.
- Erratic shifting or neutral creep – Internal wear on the spool valves or piston seals causes unintended movement when the transmission is in neutral, a clear sign the complete unit requires replacement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4661.042.017 |
| Assembly Type | Complete Powershift Transmission |
| Series | WG 94 |
| Overall Length (approx.) | 780 mm |
| Dry Weight (approx.) | 295 kg |
| Housing Material | High-strength cast iron |
| OEM Reference | ZF 2 WG 94 |
| Input Torque Capacity | Up to 1,200 Nm |
| Number of Speeds | 2 forward / 1 reverse |
Compatibility
This complete unit is engineered for the ZF WG 94 series of powershift transmissions. It is directly compatible with models including the WG180, WG200, and WG210 series, commonly found in articulated dump trucks, wheel loaders, and industrial tractors. The assembly also fits select variants of the WG 94 used in mining and construction equipment. For proper installation, the 4661101040: TRANSMISSION HOUSING must be inspected for cracks, and the 4661301107: HOUSING II should be replaced if any scoring is present. Additionally, the 0631306174: CYLINDRICAL PIN aligns the assembly during mounting, while the 0769123894: TYPE PLATE provides critical identification for service intervals.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101040 | TRANSMISSION HOUSING | Main structural casing that supports all internal gears and shafts |
| 4661301107 | HOUSING II | Secondary housing for the clutch pack and valve body section |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for precise mating of housing halves |
| 0769123894 | TYPE PLATE | Identification plate with serial number and model data |
| 0750100022 | SCREW PLUG | Seals oil passages during assembly and service |
| 4660201008 | SCREW PLUG | High-pressure port plug for hydraulic circuit testing |
| 0636100117 | SCREW PLUG | Drain plug for the torque converter cavity |
| 0501211384 | VALVE | Modulating valve for shift pressure regulation |
| 0732042156 | COMPRESSION SPRING | Returns valve spool to neutral position |
| 0768409154 | SCREW PLUG | Seals the accumulator port on the valve body |
