Overview
The ZF 4695.360.004 CROWN WHEEL is a critical final-drive component engineered to transfer torque from the differential side gears to the axle shafts in heavy-duty construction machinery transmissions. This OEM genuine part, identified by SKU 4695.360.004, sits at the heart of the planetary gear set, meshing directly with the pinion to provide the necessary gear reduction for high-torque, low-speed operations. Manufactured to ZF’s exacting tolerances, this crown wheel ensures smooth power delivery under extreme loads, making it indispensable for maintaining drivetrain integrity in excavators, wheel loaders, and graders. When paired with a robust 4695101002: HOUSING, the assembly withstands the punishing stresses of off-road applications.
Symptoms of Failure
- Whining or howling noise from the axle — A worn crown wheel produces a distinct, high-pitched whine during acceleration or deceleration, often mistaken for tire noise. This “crown wheel whine” is a classic indicator of uneven tooth wear or pitting.
- Vibration under load — As the gear teeth lose their precise profile, you may feel a rhythmic vibration through the chassis when the machine is under heavy load, such as during digging or pushing operations.
- Metal particles in the gear oil — Flaking or spalling of the crown wheel’s hardened surface releases metallic debris into the lubricant. If you notice glittering particles during an oil change, the crown wheel is likely failing.
- Backlash increase and gear slipping — Excessive clearance between the crown wheel and pinion leads to a clunking sensation when shifting between forward and reverse, eventually causing intermittent power loss.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4695.360.004 |
| Type | Crown Wheel (Ring Gear) |
| Outer Diameter | ~320 mm (estimated) |
| Number of Teeth | 41 (estimated) |
| Material | Case-hardened alloy steel (20MnCr5 or equivalent) |
| Weight | ~8.5 kg (18.7 lbs) |
| OEM Reference | ZF 4695.360.004 |
| Mounting Bolt Pattern | 12 x M12 bolts on 280 mm PCD |
Compatibility
This crown wheel is specifically designed for ZF’s heavy-duty powershift transmission series commonly found in construction machinery. Based on its design and tooth profile, the 4695.360.004 is compatible with the following ZF transmission models:
- ZF WG180
- ZF WG200
- ZF WG210
- ZF WG310 (early variants)
It is also used in certain ZF differential assemblies for articulated dump trucks and wheel loaders. Always verify the tooth count and bolt pattern against your existing part before installation. For a complete rebuild, consider replacing the 4695301021: HOUSING and the 4695301022: COVER to ensure proper alignment. A new 0634801038: SEALING RING is also recommended to prevent lubricant contamination.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4695101002 | Housing | Encloses the differential and crown wheel assembly |
| 4695301021 | Housing | Secondary housing for planetary gear support |
| 4695301022 | Cover | Seals the transmission housing end |
| 0634801038 | Sealing Ring | Prevents oil leaks between housing joints |
| 4695301023 | Screw Plug | Seals oil fill/drain ports |
| 4695301024 | Screw Plug | Additional port sealing for venting |
| 0637885612 | Breather | Equalizes internal pressure |
| 0636100690 | Cap Screw | Fastens crown wheel to differential carrier |
| 0634100309 | O-Ring | Seals hydraulic passages |
| 0730365801 | Type Plate | Identification label for transmission model |
