Overview
The ZF 0730.308.118 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 gear train, preventing axial movement of shafts and gear clusters under high torque loads. The SKU 0730.308.118 sits specifically in the clutch drum or planetary gearset retention area, ensuring that critical rotating elements remain locked in their designated positions. Without this snap ring, the entire transmission architecture risks misalignment, leading to cascading mechanical failures.
Symptoms of Failure
- Intermittent gear slipping under load – When the 0730.308.118 snap ring fatigues, it can no longer hold the clutch pack or planetary carrier in place, causing momentary power loss during acceleration.
- Metallic rattling from the transmission housing – A loose snap ring allows internal components to shift, producing a distinct clattering noise, especially when shifting between forward and reverse gears.
- Oil contamination with metal debris – As the snap ring wears, it grinds against adjacent surfaces, shedding fine metallic particles into the transmission fluid, which can clog the filter and damage bearings.
- Hard or delayed engagement – A failing snap ring permits axial play in the gear train, resulting in sluggish engagement when selecting Drive or Reverse from a stop.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.308.118 |
| Material | Spring steel (DIN 17222) |
| Inner Diameter | 73.0 mm |
| Outer Diameter | 80.5 mm |
| Thickness | 2.5 mm |
| Weight | 12 g |
| OEM Reference | ZF 0730.308.118 |
| Heat Treatment | Induction hardened |
Compatibility
This snap ring is engineered for ZF WG180, WG190, WG200, and WG210 series transmissions, as well as BP 210 and BP 230 series models. It is commonly used in off-highway vehicles, agricultural tractors, and construction equipment where the transmission housing must withstand heavy cyclic loads. For a complete assembly, pair this snap ring with the 4657101088 TRANSMISSION HOUSING, the 4657201183 HOUS.FRONT SECT, the 4657201184 HOUSING REAR PART, or the 4657298111 HOUSING REAR SECTION to ensure proper alignment and retention of the entire gear train.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101088 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4657201183 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4657201184 | HOUSING REAR PART | Rear housing component for output shaft support |
| 4657298111 | HOUSING REAR SECTION | Alternate rear housing section for specific models |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating surfaces |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4681301015 | FIXING PLATE | Retention plate for internal components |
| 4681301016 | SCREEN SHEET | Filter screen for oil circulation |
| 4681301017 | SCREEN SHEET | Secondary filter screen for debris protection |
| 0636100803 | CAP SCREW | High-strength bolt for critical joints |
Frequently Asked Questions
Q: Can I reuse the 0730.308.118 snap ring after disassembly?
A: No. This snap ring is a single-use component due to its induction-hardened profile. Reusing it risks loss of tension, leading to internal component shift and transmission damage.
Q: Does this snap ring fit the ZF WG180 transmission?
A: Yes, the 0730.308.118 is compatible with WG180, WG190, WG200, and WG210 series. Always verify the groove diameter in your specific housing before installation.
Q: What tools are needed to install this snap ring?
A: Use a snap ring pliers with 90-degree tips. Avoid prying with screwdrivers, as this can distort the ring and compromise its retention force.
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Phone: +86 158 2286 3467 |
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