Overview
The ZF 4661.043.034 3 WG 94 Powershift Transmission Assembly | Complete Unit (SKU: 4661.043.034) is a fully integrated drop-in assembly designed for heavy-duty off-highway applications. This complete unit serves as the primary power transfer module within the WG 94 series, housing the planetary gear sets, clutch packs, and hydraulic control circuits. It sits directly between the torque converter and the output driveline, converting engine torque into controlled, shiftable power for loaders, graders, and industrial vehicles. The assembly includes the main casing, which is secured by the 4661101036: HOUSING and the 4661301094: HOUSING, ensuring structural integrity under extreme loads.
Symptoms of Failure
- Delayed or harsh gear engagement: When the complete unit wears, hydraulic pressure drops, causing sluggish shifts or jarring engagement, especially in forward/reverse cycles.
- Internal oil leaks and low fluid levels: Cracks or seal failures within the assembly lead to visible drips from the bell housing or cooler lines, often accompanied by burnt transmission fluid odor.
- Unusual whining or grinding noises: Worn bearings or damaged planetary gears produce a high-pitched whine or metallic grinding during acceleration, indicating imminent internal failure.
- Complete loss of drive in one range: A failing unit may lose power to specific gear ranges, leaving the vehicle unable to move under load, a common symptom of clutch pack failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4661.043.034 |
| Assembly Type | Complete Powershift Transmission Unit |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-Grade Cast Iron (GGG-40) |
| OEM Reference | ZF 3 WG 94 |
| Max Input Torque | 1,200 Nm |
| Fluid Capacity | 14.5 liters (ZF TE-ML 03) |
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 WG211 series, commonly found in articulated dump trucks, wheel loaders, and telescopic handlers. The assembly also fits select variants of the WG 92 and WG 97 platforms with minor adapter modifications. For precise fitment, always verify the serial number against your vehicle’s transmission tag, such as the 0769123894: TYPE PLATE.
During installation, the unit integrates with the 0631306174: CYLINDRICAL PIN for precise alignment of the clutch housing. Additionally, the assembly requires proper sealing using the specified screw plugs and valves to maintain hydraulic integrity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101036 | HOUSING | Front casing for clutch pack support |
| 4661301094 | HOUSING | Rear casing for output shaft retention |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0769123894 | TYPE PLATE | Identification tag for transmission model |
| 0750100022 | SCREW PLUG | Oil drain port sealing |
| 4660201008 | SCREW PLUG | Pressure test point plug |
| 0636100117 | SCREW PLUG | Cooler line port plug |
| 0501211384 | VALVE | Modulating pressure control valve |
| 0732042156 | COMPRESSION SPRING | Clutch return spring |
| 0768409154 | SCREW PLUG | High-pressure port sealing |
