Overview
The ZF 0630.502.024 RETAINING RING is a precision-engineered axial locking component specifically designed for the WG 200 series powershift transmissions. This OEM genuine part secures internal assemblies against lateral movement, ensuring that shafts, bearings, and gears maintain their correct axial position under high torque and vibration loads. Installed within the transmission housing, this retaining ring (SKU: 0630.502.024) works in conjunction with the 4460115043: HOUSING to prevent component migration that could lead to catastrophic gear train misalignment. Its snap-fit design allows for secure retention while enabling straightforward disassembly during rebuilds.
Symptoms of Failure
- Transmission housing oil seepage – A worn or fatigued retaining ring can allow the 4469315012: AXLE DRIVE HOUSING to shift slightly, breaking the seal interface and causing slow oil leaks around the output flange.
- Intermittent gear engagement loss – When the ring loses its tension, axial play develops, leading to incomplete clutch pack compression and momentary power loss during shifting.
- Abnormal bearing noise during deceleration – A loose retaining ring permits the 0750117406: TAPER ROLLER BEARING to drift out of its preload zone, producing a distinct growling sound that worsens under load.
- Premature tapered roller bearing failure – Without proper axial constraint, the 0750117802: TAPERED ROLLER BEARING experiences uneven wear patterns, often requiring replacement of both the bearing and the ring.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0630.502.024 |
| Material | Spring steel (DIN 17222, C67S) |
| Cross-Section Diameter | 4.0 mm |
| Free Outer Diameter | 102.5 mm |
| Groove Depth Compatibility | 1.2 mm – 1.5 mm |
| Weight | 0.035 kg |
| OEM Reference | ZF 0630.502.024 |
| Surface Treatment | Phosphate coated (anti-corrosion) |
Compatibility
This retaining ring is a direct OEM replacement for the following ZF transmission models: WG 180, WG 200, and WG 211 series. It is also compatible with select variants of the WG 150 and WG 250 transmissions where the output shaft retaining groove matches the 102.5 mm outer diameter specification. Always verify groove dimensions against your transmission’s service manual before installation. The ring interfaces directly with the 4460115043: HOUSING and 4469315012: AXLE DRIVE HOUSING assemblies.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4460115043 | HOUSING | Main transmission casing that houses gear sets and shafts |
| 4469315012 | AXLE DRIVE HOUSING | Output housing supporting final drive components |
| 0750117406 | TAPER ROLLER BEARING | Radial and axial load bearing for input shaft |
| 0750117802 | TAPERED ROLLER BEARING | Precision bearing for output shaft support |
| 0734319337 | SHAFT SEAL | Prevents oil leakage at shaft exit points |
| 0730161317 | WASHER | Spacer for axial clearance adjustment |
| 0730161451 | WASHER | Thrust washer for bearing preload |
| 0730161452 | WASHER | Selective shim for gear stack height |
| 0730161453 | WASHER | Hardened washer for high-load zones |
| 0730161340 | WASHER | Corrosion-resistant spacer for wet environments |
