Overview
The ZF 4699.360.133 CROWN WHEEL is a critical hypoid gear component within the final drive assembly of heavy-duty construction machinery transmissions. As an OEM genuine part, it transfers rotational torque from the pinion gear to the differential, enabling smooth power delivery to the axles. This crown wheel, identified by SKU 4699.360.133, is precision-machined to maintain exacting gear mesh tolerances, directly influencing load-bearing capacity and operational longevity. It sits inside the transmission housing, often paired with the 4699101181 HOUSING and the 4699301191 HOUSING, which together seal and support the gear set against high axial and radial loads.
Symptoms of Failure
When the crown wheel wears out, operators may notice whining or howling noises from the transmission during acceleration, a classic sign of gear tooth surface fatigue. Another common symptom is intermittent gear slipping under heavy load, often mistaken for clutch issues but actually caused by excessive backlash between the crown wheel and pinion. Metal particles in the transmission oil filter indicate spalling or pitting on the gear teeth, requiring immediate inspection. Finally, vibration in the driveline at low speeds can signal uneven tooth wear, which accelerates damage to adjacent components like the 0634303936 O-RING and shaft seals.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.360.133 |
| Type | Hypoid Crown Wheel (Ring Gear) |
| Outer Diameter | ~320 mm (estimated) |
| Number of Teeth | 41 (estimated) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | ~8.5 kg (18.7 lbs) |
| OEM Reference | ZF 4699.360.133 |
| Hardness | 58-62 HRC (case depth 1.2-1.6 mm) |
Compatibility
This crown wheel is engineered for ZF WG180, WG200, and WG210 series transmissions commonly used in wheel loaders, graders, and dump trucks. It also fits select ZF 4WG-200 and ZF 6WG-200 powershift models. For proper installation, ensure the 4699301041 COVER is correctly torqued to prevent oil leaks. Always replace the 0634303936 O-RING during reassembly to maintain seal integrity against the housing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101181 | HOUSING | Encloses crown wheel and pinion assembly |
| 4699301191 | HOUSING | Supports differential bearings and gear set |
| 4699301041 | COVER | Seals final drive housing, prevents contamination |
| 0634303936 | O-RING | Provides leak-proof seal between housing and cover |
| 0630513203 | SNAP RING | Retains crown wheel on differential carrier |
| 0750110302 | SHAFT SEAL | Prevents oil leakage at output shaft |
| 0630513073 | SNAP RING | Secures bearing in housing bore |
| 0501319149 | SCREW PLUG | Closes oil fill/drain port |
| 0636302013 | SCREW PLUG | Seals inspection hole on housing |
| 0634801038 | SEALING RING | Ensures leak-free connection under screw plug |
