Overview
The ZF 4646.153.081 COUPLING is a critical driveline component engineered for the WG 250, WG 260, and WG 310 series transmissions. This OEM genuine part serves as the primary torque-transfer interface between the engine output and the transmission input shaft, ensuring smooth power delivery under heavy industrial loads. Positioned directly within the bell housing assembly, the coupling absorbs torsional vibrations and compensates for minor misalignment during operation. The SKU 4646.153.081 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life when paired with the 4646101173: TRANSMISSION HOUSING and the 4646301349: COVER.
Symptoms of Failure
- Audible clunking or knocking during gear engagement – Worn coupling teeth or elastomeric elements cause delayed torque transfer, producing a metallic noise when shifting from neutral to drive.
- Oil seepage around the bell housing flange – A degraded coupling seal allows transmission fluid to escape, often visible as wet spots near the 0636115293: 螺栓 mounting points.
- Vibration at low RPM under load – As the coupling loses its damping capacity, excessive vibration transmits through the driveline, particularly noticeable during start-up or when climbing grades.
- Intermittent gear slipping without warning lights – Internal wear reduces clamping force, causing momentary power loss that feels like a clutch slip but originates from the coupling hub.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4646.153.081 |
| Outer Diameter | 180 mm (approx.) |
| Inner Diameter (Spline) | 45 mm (approx.) |
| Overall Length | 95 mm |
| Material | Hardened steel hub with elastomeric damping ring |
| Weight | 2.4 kg |
| OEM Reference | ZF 4646.153.081 |
| Torque Capacity | Up to 1,200 Nm (estimated) |
Compatibility
This coupling is specifically designed for ZF’s WG series powershift transmissions. It is a direct replacement for units in the WG 180, WG 200, WG 250, WG 260, and WG 310 series. The part also fits select WG 311 variants where the bell housing interface matches. For proper installation, ensure the 0736300232: 螺栓 are torqued to factory specifications. Always inspect the mating TRANSMISSION HOUSING for cracks or wear before reassembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101173 | TRANSMISSION HOUSING | Encloses and supports all internal gear sets |
| 4646301349 | COVER | Seals the front of the transmission housing |
| 0636115293 | 螺栓 | Fastens the cover to the housing |
| 0736300232 | 螺栓 | Secures the coupling to the flywheel |
| 4475280208 | SCREW PLUG | Closes oil passages during service |
| 0634316523 | O-RING | Prevents fluid leaks at joint interfaces |
| 0630361026 | SEALING CAP | Protects sensor ports from debris |
| 0501214611 | 齿轮泵 | Provides hydraulic pressure for shifting |
| 0634313945 | O形圈 | Seals the pump outlet connection |
| 0501322532 | TEMPERATURE SENSOR | Monitors transmission fluid temperature |
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