Overview
The ZF 4699.171.017 WHEEL is a precision-engineered OEM genuine component designed for the planetary gear sets within heavy-duty construction machinery transmissions. This wheel functions as a critical load-bearing element, transferring torque from the sun gear to the planetary carrier while maintaining exact gear mesh alignment. As part of the final drive assembly, it directly influences the transmission’s ability to handle high-stress operations in excavators, loaders, and graders. The SKU 4699.171.017 is manufactured to ZF’s original specifications, ensuring dimensional accuracy and metallurgical consistency for demanding worksite conditions.
Symptoms of Failure
- Intermittent gear slipping under load: When the wheel’s tooth profile wears unevenly, the planetary gears lose engagement, causing sudden power loss during digging or lifting operations.
- Metallic grinding noise from the transmission housing: Advanced wear on the wheel’s bearing surface produces a distinct low-frequency grinding sound, often mistaken for bearing failure.
- Contaminated transmission fluid with metallic particles: Flaking or spalling of the wheel’s hardened surface introduces steel debris into the hydraulic circuit, detectable during routine oil analysis.
- Increased operating temperature in the final drive: Friction from a damaged wheel generates excess heat, triggering thermal warnings on the machine’s dashboard.
Technical Specifications
| Parameter | Value |
|---|---|
| Outer Diameter | 145 mm (estimated) |
| Inner Bore Diameter | 55 mm (estimated) |
| Thickness | 32 mm (estimated) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 1.85 kg (estimated) |
| OEM Reference | ZF 4699.171.017 |
| Surface Hardness | 58-62 HRC (estimated) |
Compatibility
This wheel is primarily used in ZF WG180, WG200, and WG310 series transmissions found in construction machinery from manufacturers such as Liebherr, Caterpillar, and Volvo CE. It is also compatible with select ZF Ecomat 4HP and 5HP models used in mobile cranes and material handlers. Always verify the transmission serial number before ordering, as minor design variations exist between production years.
During installation, this wheel interfaces directly with the 4699101081 HOUSING which contains the planetary carrier assembly. The 0501329881 HOUSING COVER must be removed to access the wheel for inspection or replacement. A new 0634306309 O-RING is recommended for resealing the housing cover, and the 0637885612 BREATHER should be checked for clogging to prevent pressure buildup that could accelerate wheel wear.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101081 | HOUSING | Encloses planetary gear set and wheel assembly |
| 0501329881 | HOUSING COVER | Seals the transmission housing access point |
| 0634306309 | O-RING | Provides fluid-tight seal between housing and cover |
| 0637885612 | BREATHER | Equalizes internal pressure and vents moisture |
| 0501319149 | SCREW PLUG | Seals oil drain or fill ports |
| 0636302022 | SCREW PLUG | Secondary port sealing plug |
| 0634801038 | SEALING RING | Prevents leakage at threaded connections |
| 0730365801 | TYPE PLATE | Identification plate for transmission model |
| 4699001126 | GK10 | Gear kit for planetary assembly |
| 4699102064 | INPUT | Input shaft for torque transfer |
