Overview
The ZF 4646.153.074 COUPLING is a critical OEM genuine component engineered for the WG 250, WG 260, and WG 310 series transmissions. This precision-machined coupling serves as the primary torque transfer interface between the engine flywheel and the transmission input shaft, ensuring smooth power delivery and driveline alignment. As an original equipment part, the SKU 4646.153.074 guarantees exact fitment and durability under heavy-duty industrial loads, reducing vibration and preventing premature wear in the drivetrain assembly.
Symptoms of Failure
- Oil leaks around the bell housing: When the 4646.153.074 coupling wears, degraded sealing surfaces allow transmission fluid to escape, often visible as drips near the engine-transmission junction.
- Gear slipping under load: A failing coupling cannot maintain proper torque transfer, causing intermittent slipping during acceleration or when hauling heavy loads in WG 310 series equipment.
- Abnormal vibration at idle: Worn coupling splines or misalignment produce rhythmic shaking that intensifies at low RPM, signaling imminent part failure.
- Clunking noise during gear engagement: Excessive play in the coupling creates audible metallic impacts when shifting between forward and reverse in WG 260 transmissions.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4646.153.074 |
| Material | High-strength alloy steel with nitrided surface |
| Outer Diameter | 180 mm (estimated) |
| Inner Diameter | 65 mm (estimated) |
| Weight | 2.8 kg (estimated) |
| OEM Reference | ZF 4646.153.074 |
| Torque Capacity | Up to 1,200 Nm |
Compatibility
This coupling is designed for ZF WG series transmissions including WG180, WG200, WG250, WG260, and WG310 models. It also fits WG311 series variants. The part is commonly used in construction vehicles, agricultural tractors, and material handling equipment requiring robust power transmission. For proper installation, always pair this coupling with the 0636115293 螺栓 and 0736300232 螺栓 to secure the assembly. Additionally, the 4475280208 SCREW PLUG seals the hydraulic circuit, while the 0634316523 O-RING prevents fluid bypass at the coupling interface.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0636115293 | 螺栓 | Mounting bolt for coupling flange |
| 0736300232 | 螺栓 | Secondary fastening bolt |
| 4475280208 | SCREW PLUG | Hydraulic port seal |
| 0634316523 | O-RING | Coupling-to-shaft seal |
| 0630361026 | SEALING CAP | Protective cap for unused ports |
| 0501214611 | 齿轮泵 | Hydraulic gear pump |
| 0634313945 | O形圈 | Pump mounting O-ring |
| 0501322534 | TEMPERATURE SENSOR | Transmission oil temp monitor |
| 0634313366 | O-RING | Sensor sealing ring |
| 4646130044 | ENGINE CONNECTION | Flywheel adapter plate |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
