Overview
The ZF 4616.000.260 4 WG 65 Powershift Transmission Assembly | Complete Unit is a fully integrated drop-in replacement for heavy-duty powershift applications. This complete assembly, identified by SKU 4616.000.260, serves as the core drivetrain component in the WG 65 series, managing torque distribution across four forward and reverse speeds. It integrates the hydraulic control block, clutch packs, and planetary gear sets into a single sealed unit. For optimal hydraulic circuit performance, this assembly is typically paired with a 4616105416: VALVE to regulate flow, while a 0501319251: SOLENOID VALVE manages electronic shift modulation.
Symptoms of Failure
- Erratic or delayed gear engagement: When the internal clutch packs or valve body wear, operators experience hesitation when shifting from neutral to drive or reverse.
- Low hydraulic pressure and oil leaks: Worn seals and gaskets around the transmission housing cause visible fluid seepage, often accompanied by a burnt oil smell.
- Torque converter shudder under load: A vibrating sensation during acceleration indicates internal wear or contamination within the converter circuit.
- Unusual whining or grinding noises: Damaged planetary gears or bearings produce metallic sounds that worsen with speed changes.
Technical Specifications
| Specification | Detail |
|---|---|
| OEM Part Number | 4616.000.260 |
| Series | WG 65 (4 WG 65) |
| Type | Powershift Transmission Assembly (Complete Unit) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Housing Material | High-grade cast iron with aluminum valve body |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Hydraulic Fluid Capacity | 12.5 liters (approx.) |
| Related Valve | 4616105416: VALVE |
| Related Solenoid | 0501319251: SOLENOID VALVE |
| Sealing Component | 0634801038: SEALING RING |
| Drain/Fill Plug | 0636302013: SCREW PLUG |
Compatibility
This ZF 4616.000.260 complete unit is engineered for the WG 65 series, but its core architecture shares hydraulic and mechanical interfaces with other ZF powershift models. It is directly compatible with the WG 180, WG 200, and WG 211 series when used as a direct replacement for the 4-speed variant. Additionally, it can be adapted to WG 120 and WG 150 applications with minor valve body adjustments. Always verify the bell housing pattern and PTO configuration before installation. For proper sealing during rebuilds, always install a new 0634801038: SEALING RING and a 0636302013: SCREW PLUG on the drain ports.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105416 | VALVE | Hydraulic flow control within the valve body |
| 0501319251 | SOLENOID VALVE | Electronic shift modulation and pressure regulation |
| 0636302013 | SCREW PLUG | Seals fluid drain and fill ports |
| 0634801038 | SEALING RING | Prevents oil leaks at housing joints |
| 4616305078 | CONSOLE | Mounting bracket for transmission control linkage |
| 0636010047 | HEXAGON SCREW | Fastens valve body to transmission case |
| 0636101020 | CAP SCREW | Secures clutch pack cover plates |
| 0630001010 | WASHER | Distributes load under bolt heads |
| 0637006015 | HEXAGON NUT | Locks mounting studs on the PTO housing |
| 0637842523 | SCREW-IN SLEEVE | Provides threaded insert for hydraulic line connections |
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