Overview
The ZF 0631.302.082 CYLINDRICAL PIN is a precision-engineered locating and alignment component designed for the planetary gearset assemblies within ZF WG100, WG130, and WG131 transmissions. This OEM genuine part ensures accurate positioning of internal shafts and gear clusters, maintaining the tight tolerances required for efficient power transfer. The SKU 0631.302.082 serves as a critical fastener within the differential housing, where it interfaces directly with the 2098309010: DIFFERENTIAL HOUSING to prevent rotational misalignment under heavy load.
Symptoms of Failure
- Persistent gear whine during acceleration: A worn 0631.302.082 pin allows the 2098309011: CROWN WHEEL to shift out of its ideal mesh pattern, producing a high-pitched noise that worsens with torque.
- Intermittent driveline vibration at highway speeds: When this cylindrical pin loses its interference fit, the 2098109042: DIFFERENTIAL assembly can develop micro-movements that translate into chassis vibration.
- Oil seepage around the pin bore: A loose or cracked pin compromises the seal between the housing and the 2099209001: DIFFERENTIAL carrier, allowing ATF to weep past the O-ring interface.
- Hard shifting or delayed engagement: Misalignment caused by a failed pin can cause the planetary gears to bind, leading to harsh clutch engagement in WG100 series transmissions.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0631.302.082 |
| Type | Cylindrical Pin (Spring & Fastener) |
| Material | Case-hardened alloy steel (DIN 17210) |
| Diameter | 12 mm (nominal) |
| Length | 45 mm |
| Surface Hardness | 58-62 HRC |
| Weight | 0.04 kg |
| OEM Reference | ZF 0631.302.082 |
Compatibility
This genuine ZF pin is specifically engineered for the WG100, WG130, and WG131 heavy-duty transmission series. It is also compatible with the WG180 and WG200 models when used in the differential carrier assembly. The 0631.302.082 pin works in conjunction with the 2098309031: AXLE BEVEL GEAR and 2098309030: AXLE BEVEL GEAR to secure the bevel gear set within the housing. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2098109042 | DIFFERENTIAL | Distributes torque to axle shafts |
| 2098309011 | CROWN WHEEL | Transfers final drive power |
| 2099209001 | DIFFERENTIAL | Carrier assembly for planetary gears |
| 2098309010 | DIFFERENTIAL HOUSING | Encloses differential components |
| 2098309009 | DIFFERENTIAL HOUSING | Alternate housing variant |
| 2098309031 | AXLE BEVEL GEAR | Drives axle shaft rotation |
| 2098309030 | AXLE BEVEL GEAR | Matching bevel gear for differential |
| 2098309032 | DIFFERENTIAL BEVEL GEAR | Spider gear for torque splitting |
| 12883200682 | THRUST WASHER | Reduces axial friction |
| 0635332059 | BALL BEARING | Supports rotating shafts |
