Overview
The ZF 0631.330.117 SPRING PIN is a precision-engineered fastening component designed for the WG100, WG130, and WG131 transmission series. This OEM genuine part functions as a critical alignment and retention pin within the transmission housing assembly, securing adjacent components against vibration-induced displacement. As a spring pin, it absorbs shear loads while maintaining positional stability of the 4699101046 HOUSING and 4699301109 HOUSING sections. The SKU 0631.330.117 is manufactured to ZF’s exacting tolerances, ensuring a press-fit installation that prevents loosening during high-torque operation.
Symptoms of Failure
- Transmission housing misalignment: A worn or sheared spring pin allows the 4699301017 BEARING COVER to shift, causing abnormal gear contact patterns and whining noises during acceleration.
- Oil seepage at housing joints: When the pin loses its compressive force, gaps form between mating surfaces, leading to ATF leaks around the 4699301085 COVER interface.
- Intermittent gear engagement: A fractured spring pin permits axial play in the shift rail, resulting in delayed or incomplete gear selection under load.
- Vibration at idle: Degraded pin tension fails to dampen harmonic resonance, transmitting excessive vibration through the bell housing to the chassis.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0631.330.117 |
| Type | Slotted Spring Pin (DIN 1481) |
| Material | Spring Steel (C67S, hardened & tempered) |
| Outer Diameter | 8.0 mm (0.315 in) |
| Length | 30.0 mm (1.181 in) |
| Wall Thickness | 1.5 mm (0.059 in) |
| Shear Strength | ≥ 1,200 N/mm² |
| Weight | 0.004 kg (0.009 lb) |
| OEM Reference | ZF 0631.330.117 |
| Compliance | ISO 9001:2015 |
Compatibility
This spring pin is validated for use in ZF WG100, WG130, and WG131 powershift transmissions. It also serves as a direct replacement in select WG180 and WG200 series units where the housing bore dimensions match. Always verify the pin’s outer diameter against the original component before installation. The pin works in conjunction with the 4699301014 THREAD PROTECTIVE SHIELD and 0634303141 O-RING to seal the housing cavity. For complete assembly, pair with the 0734307407 PROTECTION CAP and 0634309600 SHAFT SEAL to prevent contamination ingress.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101046 | HOUSING | Main transmission casing, houses gear sets |
| 4699301109 | HOUSING | Intermediate housing section, supports shafts |
| 4699301017 | BEARING COVER | Seals bearing bore, retains lubrication |
| 4699301085 | COVER | Access cover for valve body inspection |
| 4699301014 | THREAD PROTECTIVE SHIELD | Prevents thread damage during assembly |
| 0634303141 | O-RING | Static seal for housing flanges |
| 0734307407 | PROTECTION CAP | Dust cover for exposed ports |
| 0634309600 | SHAFT SEAL | Dynamic seal for rotating shafts |
| 0637885612 | BREATHER | Pressure equalization valve |
| 0636102023 | CAP SCREW | Fastener for housing bolts |
