Overview
The ZF 4646.151.467 COUPLING is a precision-engineered OEM sub-assembly designed for the WG 250, WG 260, and WG 310 series transmissions. This coupling serves as the critical mechanical link between the torque converter and the transmission input shaft, ensuring smooth power transfer and torsional vibration dampening. As a direct replacement part, the SKU 4646.151.467 interfaces directly with the TRANSMISSION HOUSING to maintain proper alignment and load distribution. When installed correctly, this coupling prevents driveline backlash and reduces stress on adjacent planetary gear sets, making it essential for maintaining OEM performance in heavy-duty industrial applications.
Symptoms of Failure
- Transmission shudder during acceleration: A worn 4646.151.467 coupling often produces a pronounced vibration or shudder when the vehicle is under load, particularly between 1st and 2nd gear shifts.
- Metallic grinding noise from bell housing: As the coupling splines wear, operators may hear a distinct grinding or clicking sound originating from the transmission bell housing area, especially during idle or low-speed maneuvering.
- Fluid contamination with metallic debris: Degradation of the coupling hub releases fine metal particles into the transmission fluid, which can be detected during routine oil analysis or when inspecting the HOUSING drain plug.
- Erratic torque converter lockup: A failing coupling can cause inconsistent lockup engagement, leading to unexpected RPM fluctuations and reduced fuel efficiency in WG series transmissions.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4646.151.467 |
| OEM Reference | ZF WG 250/260/310 Series |
| Material | High-strength alloy steel, induction-hardened |
| Weight | 2.8 kg (6.2 lbs) |
| Outer Diameter | 180 mm |
| Spline Count | 24 internal / 24 external |
| Max Torque Capacity | 1,200 Nm |
| Fastener Torque Spec | Use 螺栓 (bolt) per OEM manual |
| Identification | Refer to TYPE PLATE for revision level |
Compatibility
This coupling is engineered for the ZF WG series powershift transmissions commonly found in construction and material handling equipment. It is a direct fit for the following models: WG 180, WG 200, WG 250, WG 258, WG 260, WG 261, WG 310, and WG 311. The 4646.151.467 coupling is also compatible with earlier WG 150 series when used with the appropriate ADAPTER PLATE. Always verify the spline count and hub depth against your existing assembly before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101162 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4646301334 | HOUSING | Torque converter housing cover |
| 0636115293 | 螺栓 | Mounting bolt for coupling assembly |
| 0730365125 | TYPE PLATE | Identification and revision tag |
| 4646201003 | POT | Oil collection pot for lubrication circuit |
| 4646106024 | SHIFT SYSTEM | Hydraulic shift control module |
| 4646306071 | GASKET | Seal between housing and coupling |
| 4646306072 | ADAPTER PLATE | Interface plate for alternate models |
| 4646306073 | GASKET | Secondary seal for adapter plate |
| 0636102065 | CAP SCREW | Fastener for housing attachment |
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