Overview
The ZF 0501.311.069 CYLINDRICAL PIN is a precision-machined locating and alignment component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part, identified by SKU 0501.311.069, serves as a critical dowel pin within the valve body and housing assembly, ensuring exact positional tolerance between mating surfaces. By maintaining strict axial alignment, this pin prevents lateral shift of internal components during high-torque operation. It is frequently replaced alongside the 4108101112: HOUSING and 4108201177: HOUSING to guarantee proper fitment during a full transmission rebuild.
Symptoms of Failure
- Intermittent gear engagement hesitation: A worn or sheared cylindrical pin allows the valve body to shift out of alignment, causing delayed or erratic clutch pack engagement.
- Internal transmission oil seepage at housing joints: When the pin loses its interference fit, the 0636302056: SCREW PLUG and housing interface can develop micro-gaps, leading to slow oil weeping.
- Abnormal metallic rattling from the bell housing: A loose pin can vibrate against the 4108301304: BEARING COVER, producing a distinct tapping noise during low-speed operation.
- Hard shifting between 2nd and 3rd gear: Misalignment caused by a deformed pin alters the hydraulic circuit timing, resulting in harsh or clunky shifts.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0501.311.069 |
| Type | Cylindrical Dowel Pin |
| Material | Case-hardened alloy steel (DIN 6325) |
| Diameter | 8 mm (nominal) |
| Length | 24 mm |
| Surface Hardness | 60-64 HRC |
| Weight | ~9 grams |
| OEM Reference | ZF 0501.311.069 |
Compatibility
This cylindrical pin is specifically designed for the ZF WG100, WG130, and WG131 powershift transmission families. It is also compatible with select WG180 and WG200 variants that share the same valve body architecture. Always verify the pin bore diameter in your 4108306173: GASKET and 0750110040: SHAFT SEAL replacement kit before installation. For full assembly, pair this pin with the 4108102042: INPUT shaft and 4108302099: PLANET CARRIER for optimal driveline alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101112 | HOUSING | Main transmission case section |
| 4108201177 | HOUSING | Rear housing adapter |
| 0636302056 | SCREW PLUG | Seals hydraulic passages |
| 4108301304 | BEARING COVER | Protects output bearing |
| 4108306173 | GASKET | Housing interface seal |
| 0750110040 | SHAFT SEAL | Prevents oil leakage |
| 4108102042 | INPUT | Input shaft assembly |
| 4108302099 | PLANET CARRIER | Planetary gear support |
| 4108302007 | BEARINGSHEET | Bearing shim set |
| 0635332196 | BALL BEARING | Radial load support |
