Overview
The ZF 4616.500.216 WG 65 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway machinery. As the core power delivery module in the WG 65 Series, this assembly integrates the torque converter, planetary gear sets, and hydraulic control system into a single, ready-to-install package. The SKU 4616.500.216 replaces worn or failed original assemblies, restoring full driveline integrity. It interfaces directly with the TRANSMISSION HOUSING to contain lubrication and structural loads, while the OUTPUT shaft transfers torque to the drivetrain. Precision-machined HEXAGON SCREW fasteners secure the assembly, and the OUTPUT FLANGE provides the final connection point for the drive shaft.
Symptoms of Failure
- Erratic shifting and gear hunting: When the internal clutch packs or valve body wear, the transmission fails to hold a gear under load, causing the machine to surge or shift unpredictably during operation.
- Low hydraulic pressure and sluggish engagement: A failing assembly often exhibits delayed forward or reverse engagement, accompanied by a drop in the transmission sump pressure gauge reading below 150 psi.
- External oil seepage at housing joints: Worn seals and gaskets within the assembly lead to visible oil leaks around the bell housing and output flange area, often leaving puddles after shutdown.
- Metallic debris in the oil filter: Internal gear or bearing degradation produces fine metal particles that accumulate in the FILTER INSERT, indicating imminent failure of the complete unit.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4616.500.216 |
| Series | WG 65 Powershift |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Housing Material | High-strength cast iron (GGG-40) |
| Input Torque Capacity | 650 Nm (max) |
| Fluid Capacity | 12.5 liters (ZF TE-ML 03 fluid) |
| Mounting Bolt Torque | 80 Nm (M12 hexagon screws) |
Compatibility
This complete assembly is engineered for the ZF WG 65 Series powershift transmissions. It is directly compatible with models including the WG 65, WG 65/II, and WG 65/III, commonly found in telehandlers, wheel loaders, and industrial tractors from manufacturers such as JCB, Manitou, and Claas. The unit also fits select WG 80 and WG 90 variants when used with the correct OUTPUT FLANGE adapter. Always verify the bell housing pattern and input shaft spline count against your original transmission before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105413 | OUTPUT | Transfers torque from planetary gears to the output flange |
| 4616203017 | OUTPUT FLANGE | Connects the output shaft to the drive shaft yoke |
| 4616101117 | TRANSMISSION HOUSING | Encloses and supports all internal rotating components |
| 0636011038 | HEXAGON SCREW | Secures the housing and valve body sections |
| 0636016015 | HEXAGON SCREW | M12 bolt for mounting the output flange |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals the suction line connection |
| 0732611049 | FILTER INSERT | Traps debris to protect hydraulic circuits |
| 0634303718 | O-RING | Seals the filter housing cap |
| 0636610082 | STUD | Provides threaded mounting points for accessories |
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