Overview
The ZF 0730.308.097 SNAP RING is a critical retaining component engineered specifically for the WG190 and WG210 transmission series. This OEM genuine part secures internal assemblies—such as bearing packs and gear clusters—within the main housing, preventing axial movement during high-torque operation. The SKU 0730.308.097 is precision-machined to maintain exacting tolerances, ensuring that the snap ring locks firmly into its groove without deformation. When installed correctly, it works in concert with the 4657101088: TRANSMISSION HOUSING and the 4657201183: HOUS.FRONT SECT to create a rigid structural foundation for the entire gear train.
Symptoms of Failure
- Transmission oil leaks at the housing seam: A worn or broken snap ring allows internal components to shift, distorting housing seals and causing fluid seepage.
- Intermittent gear slipping under load: When the snap ring loses its grip, shafts can walk axially, leading to incomplete gear engagement and sudden power loss.
- Metallic rattling or clunking from the bell housing: A loose snap ring permits bearing races to vibrate against the 4657201184: HOUSING REAR PART, producing audible noise during acceleration.
- Premature bearing failure: Without proper axial retention, bearings experience uneven load distribution, leading to overheating and spalling.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 0730.308.097 |
| Material | Spring steel (C67S / 1.1231) |
| Cross-Section Diameter | 4.0 mm |
| Free Outside Diameter | 120.0 mm |
| Groove Width | 4.2 mm |
| Weight | ~0.035 kg |
| OEM Reference | ZF 0730.308.097 |
Compatibility
This snap ring is a direct fit for ZF WG190 and WG210 series transmissions. It is also compatible with the closely related WG180 and WG200 models, as well as the BP 210 and BP 230 series. The ring interfaces directly with the 4657298111: HOUSING REAR SECTION to secure the output shaft bearing. Always verify the groove diameter in your specific housing before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101088 | TRANSMISSION HOUSING | Main structural casing that encloses all rotating components. |
| 4657201183 | HOUS.FRONT SECT | Front section of the housing that supports the input shaft and pump. |
| 4657201184 | HOUSING REAR PART | Rear housing segment that contains the output shaft bearing bore. |
| 4657298111 | HOUSING REAR SECTION | Alternate rear housing variant for specific WG210 configurations. |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise housing mating during assembly. |
| 0636100801 | CAP SCREW | M10 fastener used to secure the housing halves together. |
| 4681301015 | FIXING PLATE | Locking plate that prevents cap screws from loosening under vibration. |
| 4681301016 | SCREEN SHEET | Fine mesh filter for the transmission oil suction circuit. |
| 4681301017 | SCREEN SHEET | Coarse mesh pre-filter for the main oil pump intake. |
| 0636100803 | CAP SCREW | M12 fastener for the rear housing cover plate. |
Frequently Asked Questions
Q: Can I reuse the 0730.308.097 snap ring after disassembly?
No. This snap ring is a single-use component. Reusing it risks permanent deformation and loss of retaining force, which can lead to internal damage.
Q: Does this snap ring fit the ZF WG180 transmission?
Yes. The 0730.308.097 is dimensionally identical for WG180, WG190, WG200, and WG210 models. Always confirm the groove diameter in your specific housing.
Q: What tools are needed to install this snap ring?
You will need a pair of internal snap ring pliers with 1.8 mm tips. Lubricate the ring lightly with transmission fluid before seating it into the groove.
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Phone: +86 158 2286 3467 |
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