Overview
The ZF 0730.514.794 SNAP RING is a precision-engineered retaining component designed for the WG 90 and WG 94 series transmissions. This OEM genuine part functions as a critical axial locking mechanism, securing internal assemblies such as gear clusters, bearing packs, and shaft components within the transmission housing. The snap ring fits into a machined groove, preventing lateral movement under high torque and vibration loads. The SKU 0730.514.794 is manufactured to ZF’s exacting tolerances, ensuring a secure interference fit that maintains gear alignment and drivetrain integrity. This part is commonly installed during rebuilds or repairs involving the TRANSMISSION HOUSING and the HOUSING assembly, where it locks components in place to prevent axial play.
Symptoms of Failure
- Transmission gear slipping under load: When the snap ring fatigues or breaks, internal components shift axially, causing gears to disengage intermittently during operation.
- Unusual metallic rattling or grinding noises: A worn or dislodged snap ring allows bearings and shafts to move freely, producing a distinct clattering sound from the transmission housing.
- Oil leaks from the housing joint: A failed snap ring can cause misalignment of the TUBE assembly, leading to seal damage and fluid seepage around the case.
- Hard shifting or delayed engagement: Axial movement of the gear train due to a missing snap ring creates binding, making gear changes feel rough or delayed.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0730.514.794 |
| Material | Spring steel (C67S or equivalent), heat-treated |
| Inner Diameter | Approx. 90 mm |
| Outer Diameter | Approx. 98 mm |
| Thickness | 2.5 mm |
| Weight | ~12 grams |
| OEM Reference | ZF 0730.514.794 |
| Surface Finish | Phosphate coated for corrosion resistance |
Compatibility
This snap ring is specifically engineered for ZF WG 90 and WG 94 series transmissions, which are commonly used in heavy-duty off-highway vehicles, construction equipment, and agricultural machinery. It is also compatible with the WG 180 and WG 200 models where the same groove dimensions apply. The part interfaces directly with the CYLINDRICAL PIN used for alignment in the housing assembly. Always verify the groove width and shaft diameter before installation to ensure proper fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101001 | TRANSMISSION HOUSING | Main casing that encloses all internal transmission components |
| 4661301007 | HOUSING | Secondary housing for bearing and shaft support |
| 4661301093 | TUBE | Fluid or lubrication passage within the transmission |
| 0631306174 | CYLINDRICAL PIN | Alignment pin for precise housing assembly |
| 0769123894 | TYPE PLATE | Identification plate for transmission model and serial number |
| 0750100022 | SCREW PLUG | Seals fluid ports and access holes |
| 0636302602 | SCREW PLUG | High-pressure plug for hydraulic circuits |
| 0634100633 | O-RING | Seals joints to prevent fluid leakage |
| 4661301029 | NOZZLE | Directs lubrication flow to gear meshes |
| 4661301027 | NOZZLE | Alternate flow-directing nozzle for oil distribution |
