Overview
The ZF 4616.006.003 6 WG 65 Powershift Transmission Assembly is a complete, factory-matched unit designed for heavy-duty off-highway applications. This assembly serves as the core hydraulic-mechanical power transfer module within the WG 65 series, integrating the torque converter, planetary gear sets, and clutch packs into a single sealed housing. As a complete unit, the SKU 4616.006.003 replaces the entire transmission core, eliminating the need for piecemeal rebuilding of worn internal components. It is the primary assembly that receives engine torque and modulates it through six forward speeds, directly coupling to the 4616105413: OUTPUT shaft to deliver power to the driveline.
Symptoms of Failure
- Erratic shifting or gear slippage under load: When the internal clutch packs or valve body wear out, the transmission may hesitate or slip between gears, especially when climbing grades or carrying heavy payloads.
- External oil leaks at the housing seams: Cracks or warping in the 4616101117: TRANSMISSION HOUSING can cause pressurized ATF to seep out, leading to low fluid levels and eventual overheating.
- Loud whining or grinding noises from the bell housing: Worn bearings or damaged planetary gears produce metallic sounds that intensify with engine RPM, indicating imminent internal failure.
- Delayed engagement when shifting from Neutral to Drive: A failing torque converter or low hydraulic pressure causes a 3-5 second lag before the transmission engages, reducing operator control.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number / SKU | 4616.006.003 |
| Assembly Type | Complete Powershift Transmission (6 WG 65) |
| Number of Speeds | 6 Forward / 1 Reverse |
| Dry Weight (approx.) | 385 kg (849 lbs) |
| Overall Length | 720 mm |
| Housing Material | High-tensile cast iron |
| OEM Reference | ZF 6 WG 65 |
| Max Input Torque | 650 Nm |
| Fluid Capacity | 18 liters (ATF Dexron III) |
Compatibility
This complete unit is specifically engineered for the ZF WG 65 series powershift transmissions. It is directly compatible with models including the WG65, WG80, and WG100 series used in telescopic handlers, wheel loaders, and agricultural tractors. The assembly mates directly to the 4616203017: OUTPUT FLANGE and is secured using 0636011038: HEXAGON SCREW fasteners. For applications requiring a different output configuration, verify the flange pattern against your existing driveline.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105413 | OUTPUT | Transfers torque from transmission to driveline |
| 4616203017 | OUTPUT FLANGE | Connects output shaft to universal joint |
| 4616101117 | TRANSMISSION HOUSING | Encloses and protects internal gear sets |
| 0636011038 | HEXAGON SCREW | Secures housing and flange assemblies |
| 0636016015 | HEXAGON SCREW | Fastens valve body and cover plates |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals hydraulic passages between sections |
| 0732611049 | FILTER INSERT | Traps debris in the hydraulic circuit |
| 0634303718 | O-RING | Seals the filter housing cover |
| 0636610082 | STUD | Provides threaded mounting for bell housing |
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