Overview
The ZF 4699.303.194 WHEEL STUD is a critical OEM genuine fastening component engineered for the final drive assembly of heavy-duty construction machinery transmissions. This stud secures the wheel hub to the planetary carrier, ensuring precise torque retention under extreme load and vibration. Positioned within the axle housing interface, the SKU 4699.303.194 directly interacts with the 4699101049: HOUSING and the 4699301188: HOUSING to maintain structural integrity. Without this stud, the wheel assembly cannot maintain concentric alignment, leading to accelerated wear on adjacent drivetrain components.
Symptoms of Failure
- Wheel hub wobble or excessive lateral play: A worn or stretched wheel stud allows the hub to shift, causing uneven tire wear and steering instability.
- Torque loss and loosening lug nuts: If the stud’s threads strip or the shoulder deforms, lug nuts will back off during operation, creating a dangerous safety hazard.
- Metallic clicking or knocking from the wheel end: A fractured stud permits the wheel to rock against the hub, producing audible noise during turns or under load.
- Oil seepage around the hub mounting face: A compromised stud can distort the sealing surface of the 0636015047: HEXAGON SCREW, allowing lubricant to escape from the final drive.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.303.194 |
| Material | Alloy steel, heat-treated (Grade 10.9 equivalent) |
| Thread Size | M20 x 1.5 (estimated) |
| Overall Length | 95 mm |
| Thread Length | 45 mm |
| Shoulder Diameter | 28 mm |
| Weight | 0.32 kg |
| OEM Reference | ZF 4699.303.194 |
| Surface Finish | Zinc-plated, yellow passivated |
Compatibility
This wheel stud is primarily compatible with ZF WG180, WG200, and WG210 series transmissions used in wheel loaders, excavators, and articulated dump trucks. It also fits select ZF AP400 and AP500 axle assemblies. Always verify the stud’s shoulder height and thread pitch against your existing hub before installation. The stud works in conjunction with the 4699301128: COVER to protect the internal planetary gears from contamination.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101049 | HOUSING | Encloses the planetary gear set and supports the wheel stud |
| 4699301188 | HOUSING | Outer axle housing providing structural mounting points |
| 4699301128 | COVER | Seals the wheel end and retains lubricant |
| 0636015047 | HEXAGON SCREW | Secures the cover to the housing |
| 0734307406 | SEALING RING | Prevents oil leakage at the housing joint |
| 0501319149 | SCREW PLUG | Closes the fill/drain port in the housing |
| 0634801038 | SEALING RING | Provides a leak-proof seal under the screw plug |
| 0636101041 | CAP SCREW | Fastens the brake caliper bracket to the axle |
| 0636101036 | CAP SCREW | Mounts the planetary carrier to the hub |
| 0636101032 | CAP SCREW | Attaches the final drive cover assembly |
