Overview
The ZF 4661.043.018 3 WG 94 Powershift Transmission Assembly | Complete Unit is a fully assembled, drop-in ready drivetrain component designed for heavy-duty off-highway machinery. This complete unit integrates the gear cluster, clutch packs, and hydraulic control elements into a single, pre-tested assembly. As a core member of the WG 94 Series, it manages torque distribution across multiple speeds under extreme load conditions. The SKU 4661.043.018 is the definitive identifier for this complete assembly, ensuring precise replacement without the need for piecemeal rebuilding. When installing this unit, always verify the integrity of the surrounding 4661101036: HOUSING and the 4661301094: HOUSING, as these structures support the entire assembly. Additionally, the 0631306174: CYLINDRICAL PIN is critical for aligning the unit during installation, and the 0769123894: TYPE PLATE must be transferred to the new assembly for accurate identification.
Symptoms of Failure
- Delayed or harsh gear engagement: When the complete unit wears, internal clutch clearance increases, causing a noticeable lag or jarring shift between forward and reverse ranges.
- Chronic hydraulic oil leaks at the main case seam: Deteriorated seals within the assembly lead to fluid weeping around the mating surfaces, often mistaken for external line leaks.
- Intermittent power loss under load: Worn internal splines or piston seals cause the transmission to slip or lose torque during heavy excavation or grading operations.
- Unusual whining or grinding noises from the bell housing: Bearing fatigue inside the complete unit produces a high-pitched metallic sound that intensifies with engine RPM.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4661.043.018 |
| Assembly Type | Complete Powershift Unit (3 WG 94) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Primary Material | Cast Iron Housing with Hardened Steel Gears |
| OEM Reference | ZF 3 WG 94 Series |
| Max Input Torque (est.) | 1,200 Nm |
| Fluid Capacity (integral) | 14.5 liters |
Compatibility
This complete unit is engineered for the ZF WG 94 Series of powershift transmissions. Based on its design and part number prefix, it is compatible with the following ZF models: WG180, WG200, WG210, and WG220. These transmissions are commonly found in wheel loaders, telehandlers, and industrial tractors from manufacturers such as Liebherr, JCB, and Volvo CE. Always cross-reference your transmission’s serial number with the 4661.043.018 to confirm fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101036 | HOUSING | Encloses the main gear train and supports bearings |
| 4661301094 | HOUSING | Secondary case section for clutch pack retention |
| 0631306174 | CYLINDRICAL PIN | Precision alignment dowel for assembly registration |
| 0769123894 | TYPE PLATE | Identification plate with serial number and specs |
| 0750100022 | SCREW PLUG | Seals hydraulic test ports |
| 4660201008 | SCREW PLUG | Closes oil gallery access holes |
| 0636100117 | SCREW PLUG | Drain plug for the main sump |
| 0501211384 | VALVE | Modulates clutch apply pressure |
| 0732042156 | COMPRESSION SPRING | Returns valve spools to neutral position |
| 0768409154 | SCREW PLUG | Seals the pressure regulator bore |
