Overview
The ZF 4646.152.077 COUPLING is a precision-engineered OEM sub-assembly designed for the WG 250, WG 260, and WG 310 series transmissions. This critical component functions as the primary torque transfer interface between the engine flywheel and the transmission input shaft, ensuring smooth power delivery and dampening torsional vibrations. The SKU 4646.152.077 sits directly within the bell housing assembly, where it mates with the TRANSMISSION HOUSING to maintain proper alignment and load distribution. Its robust construction is essential for maintaining driveline integrity in heavy-duty industrial applications.
Symptoms of Failure
- Torque converter shudder or vibration during acceleration – A worn 4646.152.077 coupling often produces low-frequency vibrations that intensify under load, commonly searched as “ZF transmission shudder at takeoff.”
- Transmission fluid contamination with metallic debris – As the coupling wears, friction material sheds into the oil, leading to “ZF WG series metal shavings in pan” diagnostics.
- Erratic gear engagement or delayed shifting – Loss of coupling integrity causes “ZF transmission slipping between gears” due to improper torque transfer.
- Audible clunking noise from bell housing area – Excessive clearance in the coupling produces a distinct “ZF WG310 clunk when shifting” sound, indicating imminent failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4646.152.077 |
| Outer Diameter | 310 mm (estimated) |
| Inner Diameter | 152 mm (estimated) |
| Material | High-strength steel with elastomeric damping insert |
| Weight | 4.2 kg (estimated) |
| OEM Reference | ZF OEM Sub-Assembly |
| Torque Capacity | Up to 2,500 Nm (estimated) |
Compatibility
This coupling is specifically engineered for ZF WG series powershift transmissions. It is a direct fit for the WG 180, WG 200, WG 250, WG 260, and WG 310 models. It also applies to the WG 311 series. When replacing this component, always inspect the mating COVER for wear and ensure the correct 螺栓 and 螺栓 fasteners are used to secure the assembly to the transmission housing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101173 | TRANSMISSION HOUSING | Encloses and supports the coupling assembly |
| 4646301349 | COVER | Seals the coupling cavity and retains lubrication |
| 0636115293 | 螺栓 | Mounting bolt for coupling retention |
| 0736300232 | 螺栓 | Secondary fastening bolt for housing |
| 4475280208 | SCREW PLUG | Seals oil passages in the housing |
| 0634316523 | O-RING | Prevents fluid leaks at coupling interfaces |
| 0630361026 | SEALING CAP | Protects exposed ports during assembly |
| 0501214611 | 齿轮泵 | Hydraulic pump for clutch actuation |
| 0634313945 | O形圈 | Secondary sealing ring for pressure circuits |
| 0501322532 | TEMPERATURE SENSOR | Monitors transmission fluid temperature |
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