Overview
The ZF 4616.000.208 4 WG 65 Powershift Transmission Assembly | Complete Unit is a fully assembled drop-in solution designed for heavy-duty off-highway applications. This complete unit integrates the planetary gear set, clutch packs, and hydraulic control system into a single, pre-tested assembly. As a core component of the WG 65 Series, it manages torque distribution across four forward and reverse speeds, ensuring smooth power delivery under extreme loads. The SKU 4616.000.208 identifies this specific variant, which is engineered to replace worn or failed assemblies without requiring disassembly of the existing TRANSMISSION HOUSING. This unit is critical for maintaining operational uptime in construction, mining, and agricultural machinery.
Symptoms of Failure
- Delayed or harsh gear engagement: When the assembly wears, hydraulic pressure drops, causing hesitation or clunking when shifting between forward and reverse. This often accompanies a loss of modulation in the clutch packs.
- Torque converter shudder under load: A failing unit produces vibration during acceleration, particularly at low speeds, indicating internal wear on the stator or turbine components.
- External fluid seepage near the bell housing: Degraded seals within the assembly allow transmission oil to leak past the input shaft, leaving puddles under the vehicle. This symptom is often misdiagnosed as a housing crack.
- Intermittent loss of power to the wheels: Slipping clutches cause the engine to rev without corresponding vehicle movement, especially on inclines or under heavy payloads.
Technical Specifications
| Parameter | Value |
|---|---|
| Assembly Weight | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 410 mm |
| Housing Material | Cast iron (GGG-40) |
| OEM Reference | ZF 4616.000.208 |
| Max Input Torque | 1,200 Nm |
| Fluid Capacity | 14.5 L |
Compatibility
This complete unit is specifically designed for the WG 65 Series of powershift transmissions. It is compatible with ZF models including the WG180, WG200, and WG210, which are commonly found in wheel loaders, telehandlers, and dump trucks from manufacturers such as Caterpillar, Volvo, and JCB. The assembly interfaces directly with the TRANSMISSION HOUSING and is secured using HEXAGON SCREW (M12x1.5) for the main flange, HEXAGON SCREW (M10x1.25) for the valve body, and HEXAGON SCREW (M8x1.0) for the cover plate. Always verify your transmission serial number against the ZF parts catalog before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101106 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 0636011038 | HEXAGON SCREW | M12 flange bolt for housing |
| 0636011118 | HEXAGON SCREW | M10 bolt for valve body |
| 0636016015 | HEXAGON SCREW | M8 bolt for cover plate |
| 0631306085 | CYLINDRICAL PIN | Alignment dowel for housing |
| 0634313118 | O-RING | Seal for hydraulic passages |
| 0636304019 | SCREW PLUG | Drain/fill port closure |
| 0634801152 | SEALING RING | Copper washer for plug |
| 0732611049 | FILTER INSERT | Hydraulic oil filtration |
| 0634303718 | O-RING | Filter housing seal |
