Overview
The ZF 0730.514.047 SNAP RING is a critical OEM genuine retaining component engineered for heavy-duty construction machinery transmissions. This precision-formed snap ring secures internal gear assemblies and bearing packs within the differential housing, preventing axial movement under extreme torque loads. Positioned directly inside the transmission’s final drive section, the SKU 0730.514.047 works in concert with the 5838109012: DIFFERENTIAL and the 5838300626: DIFFERENTIAL HOUSING to maintain proper gear mesh alignment. Without this snap ring, the entire rotating assembly risks catastrophic dislocation during operation.
Symptoms of Failure
- Transmission whining noise under load — A worn snap ring allows the differential assembly to shift laterally, causing gear teeth to contact unevenly. This generates a distinct high-pitched whine during acceleration or climbing.
- Intermittent gear slipping in forward gears — When the snap ring loses its tension, the 0750117075: TAPER ROLLER BEARING can migrate out of its race, leading to sudden loss of drive power.
- Metallic debris in transmission fluid — A fractured snap ring sheds hardened steel fragments that contaminate the oil. This often coincides with accelerated wear on the 2093209023: DIFFERENTIAL side gears.
- Excessive end-play at the output shaft — Visible axial movement of the yoke or flange indicates the snap ring has deformed or dislodged from its groove.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0730.514.047 |
| Material | Spring steel (SAE 1070), phosphate coated |
| Nominal Diameter (ID) | 47.0 mm |
| Cross-Section Thickness | 2.5 mm |
| Free Gap Width | 3.2 mm |
| Weight | 0.012 kg |
| OEM Reference | ZF 0730.514.047 (Genuine) |
| Heat Treatment | Oil quenched, tempered to 44-48 HRC |
Compatibility
This snap ring is designed for ZF heavy-duty powershift transmissions used in wheel loaders, dozers, and graders. It fits the following ZF models: WG180, WG200, WG210, and WG310. It is also found in certain ZF 4WG-200 and 6WG-310 series transmissions. Always verify groove dimensions against your specific differential housing before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential carrier rotation |
| 2093209023 | DIFFERENTIAL | Alternate differential assembly variant |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gear set |
| 0631329088 | SPRING PIN | Locks shift fork to shaft |
| 5838300811 | THRUST WASHER | Controls axial clearance in differential |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 5838300633 | AXLE | Drives final reduction gears |
| 5838300753 | THRUST WASHER | Differential side gear shim |
| 5838300818 | THRUST WASHER | Pinion gear thrust surface |
Frequently Asked Questions
Q: Can I reuse the 0730.514.047 snap ring after disassembly?
No. ZF specifies this snap ring as a one-time-use component. Reusing it risks loss of tension, which can lead to differential bearing migration and internal gear damage.
Q: What tools are needed to install this snap ring?
You will need internal snap ring pliers with 1.2 mm tips. A small pry bar may be required to seat the ring fully into the groove inside the differential housing.
Q: Does this snap ring fit the WG180 transmission with a locking differential?
Yes, the 0730.514.047 is compatible with both standard and locking differential variants in the WG180, provided the housing groove diameter is 47 mm.
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