Overview
The ZF 4616.000.223 4 WG 65 Powershift Transmission Assembly | Complete Unit is a fully assembled, drop-in replacement for heavy-duty powershift transmissions in the WG 65 series. This complete unit integrates the main gear cluster, clutch packs, and hydraulic control system into a single, pre-tested assembly. As a core component, it sits between the engine bellhousing and the output driveline, managing torque distribution across four forward and reverse speeds. The SKU 4616.000.223 denotes a factory-spec complete unit, eliminating the need for piecemeal rebuilding. For structural integrity, this assembly mounts directly into the 4616101101: TRANSMISSION HOUSING, which provides the rigid casing for all internal rotating elements.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn clutch discs or degraded seals inside the assembly cause delayed shifts or power loss, especially when moving heavy loads.
- Hydraulic fluid contamination or overheating: Internal debris from a failing unit can clog the valve body, leading to high operating temperatures and burnt transmission fluid.
- Unusual whining or grinding noises: Bearing wear or gear tooth damage within the complete unit produces audible metallic sounds during acceleration or deceleration.
- External oil seepage at mating surfaces: Cracks or gasket failures in the assembly allow ATF to leak around the 4616301304: HOUSING or the 4616301309: HOUSING, leaving visible puddles under the vehicle.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4616.000.223 |
| Series | WG 65 |
| Type | Powershift Transmission Assembly (Complete Unit) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Overall Width | 480 mm |
| Overall Height | 560 mm |
| Housing Material | Cast Iron / Aluminum Alloy |
| Fastener Torque Spec | Use 0636011118: HEXAGON SCREW (M12 x 1.5, 85 Nm) |
| Seal Type | 0634313118: O-RING (Viton, 2.5 mm cross-section) |
| Drain Plug | 0636304019: SCREW PLUG (M24 x 1.5) |
Compatibility
This complete unit is engineered for the ZF WG 65 series of powershift transmissions. It is a direct fit for models including the WG180, WG200, and WG210, which are commonly found in articulated dump trucks, wheel loaders, and industrial tractors. The assembly also integrates with earlier WG 65 variants such as the WG160 and WG190, provided the 4616101101: TRANSMISSION HOUSING is correctly aligned. Always verify your transmission model tag before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101101 | TRANSMISSION HOUSING | Main structural casing for the assembly |
| 0636011118 | HEXAGON SCREW | Fastener for housing and cover plates |
| 4616301304 | HOUSING | Rear output housing section |
| 4616301309 | HOUSING | Front clutch housing section |
| 0630361069 | SEALING CAP | Closes hydraulic test ports |
| 0636011038 | HEXAGON SCREW | M10 fastener for valve body |
| 0636016015 | HEXAGON SCREW | M16 fastener for bellhousing |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing halves |
| 0634313118 | O-RING | Seals hydraulic passages |
| 0636304019 | SCREW PLUG | Oil drain or fill port plug |
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