Overview
The ZF 4616.500.224 8 WG 65 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This assembly integrates the main gear cluster, clutch packs, and hydraulic control components into a single ready-to-install package. As the core of the WG 65 Series, it manages torque distribution across eight forward and reverse speeds. The SKU 4616.500.224 replaces worn internal assemblies to restore full power transfer efficiency. This unit interfaces directly with the 4616105413: OUTPUT shaft and the 4616101117: TRANSMISSION HOUSING to form a sealed, pressurized driveline system.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn clutch discs or damaged pistons inside the assembly cause delayed shifts or complete loss of drive in specific ranges.
- Internal hydraulic pressure loss: Cracks in the valve body or seal failures lead to low line pressure, resulting in soft shifts and overheating.
- Metallic debris in transmission fluid: Bearing or gear spalling generates fine metal particles, often accompanied by a whining noise during operation.
- External oil seepage from bell housing: Degraded gaskets between the assembly and the 4616203017: OUTPUT FLANGE allow fluid to escape, leaving visible drips after shutdown.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4616.500.224 |
| Assembly Type | Complete Powershift Unit (8 WG 65) |
| Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Housing Material | High-tensile cast iron |
| Clutch Pack Count | 6 hydraulic clutches |
| Max Input Torque | 2,200 Nm |
| Fluid Capacity | 12.5 liters (ZF EcoFluid) |
| Mounting Bolts | 0636011038: HEXAGON SCREW (M12 x 1.5) |
Compatibility
This 4616.500.224 assembly is engineered for the ZF WG 65 Series powershift transmissions. It is directly compatible with models WG 65, WG 80, WG 100, and WG 120 used in wheel loaders, graders, and material handlers. The unit also fits select WG 180 and WG 200 variants when paired with the correct 4616203017: OUTPUT FLANGE adapter. Always verify the bell housing pattern against your 4616101117: TRANSMISSION HOUSING before installation. Secure the assembly using 0636011038: HEXAGON SCREW fasteners torqued to 120 Nm.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105413 | OUTPUT | Transfers torque from assembly to driveline |
| 4616203017 | OUTPUT FLANGE | Connects output shaft to universal joint |
| 4616101117 | TRANSMISSION HOUSING | Encloses and supports gear cluster |
| 0636011038 | HEXAGON SCREW | Secures assembly to housing |
| 0636016015 | HEXAGON SCREW | Fastens output flange to shaft |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals hydraulic passages between sections |
| 0732611049 | FILTER INSERT | Traps contaminants in lubrication circuit |
| 0634303718 | O-RING | Seals output flange to housing |
| 0636610082 | STUD | Positions filter housing on transmission |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
