Overview
The ZF 4646.153.082 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 transmission output shaft and the driveline, ensuring seamless power delivery under heavy industrial loads. As part of the hydraulic and mechanical assembly, the SKU 4646.153.082 directly influences shift quality and overall transmission longevity. When paired with the correct 0636115293 螺栓 and 0736300232 螺栓, this coupling maintains precise alignment, reducing wear on adjacent components.
Symptoms of Failure
- Vibration during gear engagement: A worn 4646.153.082 coupling often produces noticeable driveline shudder, especially when shifting between forward and reverse under load.
- Oil seepage at the bell housing: Deterioration of the coupling’s sealing surface leads to transmission fluid leaks, commonly misdiagnosed as a main seal failure.
- Intermittent power loss: As the coupling splines wear, operators may experience hesitation or slipping during acceleration, particularly in WG 260 and WG 310 units.
- Metallic debris in the oil pan: Advanced wear generates fine metal particles, detectable during routine fluid changes, indicating imminent coupling failure.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4646.153.082 |
| Material | Hardened alloy steel (42CrMo4) |
| Outer Diameter | 145 mm |
| Inner Diameter (Spline) | 32 mm |
| Overall Length | 68 mm |
| Weight | 1.85 kg |
| Surface Treatment | Zinc-nickel plating (anti-corrosion) |
| Torque Capacity | 1,200 Nm |
| OEM Reference | ZF 4646.153.082 (Genuine) |
Compatibility
This ZF 4646.153.082 coupling is designed for the WG 180, WG 200, WG 250, WG 260, WG 261, and WG 310 transmission families. It is a direct replacement for units requiring the original spline profile and flange geometry. For proper installation, always use the matching 4475280208 SCREW PLUG to seal the hydraulic circuit, and replace the 0634316523 O-RING to prevent fluid bypass. The coupling is also compatible with earlier WG series transmissions when verified against the output shaft spline count (typically 14 or 16 splines).
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0636115293 | 螺栓 | Secures coupling to transmission flange |
| 0736300232 | 螺栓 | Mounting bolt for housing assembly |
| 4475280208 | SCREW PLUG | Hydraulic port sealing plug |
| 0634316523 | O-RING | Seals coupling-to-shaft interface |
| 0630361026 | SEALING CAP | Protects exposed splines during storage |
| 0501214611 | 齿轮泵 | Hydraulic pump for clutch actuation |
| 0634313945 | O形圈 | Secondary seal for pump housing |
| 0501322534 | TEMPERATURE SENSOR | Monitors transmission oil temperature |
| 0634313366 | O-RING | Seals temperature sensor port |
| 4644301014 | 挡油盘 | Oil deflector for lubrication distribution |
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