Overview
The ZF 4616.000.263 4 WG 65 Powershift Transmission Assembly | Complete Unit is a fully assembled drop-in replacement for heavy-duty powershift applications. This complete unit integrates the main gear cluster, clutch packs, and hydraulic control system into a single, pre-tested assembly. Designed for the WG 65 series, the SKU 4616.000.263 serves as the core power transfer module, replacing the entire transmission housing and internal rotating components. It sits directly between the engine bellhousing and the output driveline, managing torque distribution across four forward and reverse speeds. For optimal hydraulic control, this assembly is paired with a 4616105417: VALVE to regulate clutch engagement pressure.
Symptoms of Failure
- Erratic gear engagement or slipping under load: Worn clutch packs or degraded seals inside the 4616.000.263 unit cause delayed shifts or complete loss of drive in specific gears, especially during heavy hauling.
- External oil leaks at the main housing: Cracks or gasket failure in the transmission case lead to visible ATF drips, often mistaken for simple pan leaks. This requires immediate replacement of the 0634801038: SEALING RING during installation.
- Unusual whining or grinding noises: Bearing fatigue or gear tooth damage within the assembly produces metallic sounds that intensify with RPM changes, indicating imminent internal failure.
- Overheating and burnt fluid smell: Restricted oil passages or a failing torque converter lock-up cause excessive heat generation, often accompanied by a 0501319251: SOLENOID VALVE malfunction that fails to modulate line pressure.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4616.000.263 |
| Assembly Type | Complete Powershift Transmission (4 WG 65) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Housing Material | High-strength cast iron (GGG-40) |
| Input Spline Count | 14-tooth, 2.5” pitch diameter |
| Max Input Torque | 650 Nm (479 lb-ft) |
| Fluid Capacity | 12.5 liters (ATF Dexron III) |
| OEM Reference | ZF 4 WG 65 Series |
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 WG250 used in agricultural tractors, telehandlers, and industrial loaders. The 4616.000.263 assembly is also compatible with earlier WG 65 variants (pre-2005) when used with the correct 0636302013: SCREW PLUG for pressure port sealing. Always verify the transmission serial number against ZF’s application guide to ensure proper fitment for your specific vehicle model.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105417 | VALVE | Hydraulic control valve for clutch modulation |
| 0501319251 | SOLENOID VALVE | Electro-hydraulic shift solenoid |
| 0636302013 | SCREW PLUG | Sealing plug for test ports |
| 0634801038 | SEALING RING | O-ring for housing joint |
| 4616305078 | CONSOLE | Mounting bracket for transmission |
| 0636010047 | HEXAGON SCREW | Fastener for bellhousing attachment |
| 0636101020 | CAP SCREW | High-tensile bolt for cover plate |
| 0630001010 | WASHER | Flat washer for load distribution |
| 0637006015 | HEXAGON NUT | Lock nut for output flange |
| 0637842523 | SCREW-IN SLEEVE | Threaded insert for oil line connection |
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