Overview
The ZF 0730.308.110 SNAP RING is a precision-engineered retaining component designed for the WG190 and WG210 series transmissions. This OEM genuine part secures internal assemblies within the planetary gear set, preventing axial movement of shafts and bearings under high torque loads. The SKU 0730.308.110 is installed directly inside the transmission housing, where it locks components into their correct positions to maintain gear alignment and clutch pack clearance. Without this snap ring, critical drivetrain elements can shift, leading to premature wear and operational instability.
Symptoms of Failure
- Transmission oil leaks near the bell housing: A worn or broken ZF 0730.308.110 snap ring allows internal components to shift, compromising seal surfaces and causing fluid seepage.
- Gear slipping under load in WG210 models: When the snap ring fails, planetary gear sets lose axial retention, resulting in intermittent power loss during acceleration or hill climbing.
- Unusual metallic grinding noises from the transmission: Loose retaining rings permit gear teeth to contact housing walls, producing a distinct scraping sound that worsens with RPM changes.
- Hard shifting or delayed engagement in BP 230 Series: Axial play from a degraded snap ring disrupts clutch pack compression, leading to rough or delayed gear changes.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 0730.308.110 |
| Material | Spring steel (C67S) with phosphate coating |
| Inner Diameter | 110.0 mm |
| Outer Diameter | 120.5 mm |
| Thickness | 2.5 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.308.110 |
| Operating Temperature Range | -40°C to +150°C |
Compatibility
This snap ring is engineered for ZF WG180, WG190, WG200, and WG210 series transmissions, as well as BP 210 and BP 230 models. It is a direct replacement for the OEM retaining ring found in planetary gear sets and clutch drum assemblies. Always verify the snap ring groove dimensions in your specific transmission model before installation. The 0730.308.110 is not compatible with older ZF Ecomat or AS Tronic series.
This snap ring works in conjunction with the 4657101088: TRANSMISSION HOUSING to secure internal components. For complete front section assembly, pair it with the 4657201183: HOUS.FRONT SECT. The rear assembly requires either the 4657201184: HOUSING REAR PART or the 4657298111: HOUSING REAR SECTION for proper alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0631306816 | CYLINDRICAL PIN | Aligns housing sections during assembly |
| 0636100801 | CAP SCREW | Secures snap ring groove covers |
| 4681301015 | FIXING PLATE | Prevents snap ring rotation |
| 4681301016 | SCREEN SHEET | Filters debris from snap ring area |
| 4681301017 | SCREEN SHEET | Secondary filtration for oil flow |
| 0636100803 | CAP SCREW | Fastens housing rear section |
Frequently Asked Questions
Q: Can the ZF 0730.308.110 snap ring be reused after removal?
A: No. This snap ring is a single-use component. Reusing it risks loss of tension, which can lead to axial play and transmission failure. Always install a new OEM ring during rebuilds.
Q: What tools are needed to install this snap ring in a WG190 transmission?
A: You will need snap ring pliers with 90-degree tips and a groove depth gauge. Ensure the ring fully seats in the housing groove before proceeding with reassembly of the HOUS.FRONT SECT.
Q: How does this part differ from standard retaining rings?
A: The 0730.308.110 is heat-treated to ZF’s exacting specifications for fatigue resistance under cyclic loads. Generic rings lack the precise dimensional tolerances required for BP 230 Series planetary sets.
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Phone: +86 158 2286 3467 |
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