Overview
The ZF 4646.298.913 DISC CARRIER is a critical internal component engineered for the WG311 series transmission. This genuine OEM part functions as the central hub that houses and aligns the clutch disc packs, ensuring precise torque transfer and smooth gear engagement under heavy-duty industrial loads. Positioned within the main shaft assembly, the disc carrier directly interfaces with the TRANSMISSION HOUSING (4646101173) to maintain proper axial clearance. The SKU 4646.298.913 is manufactured to ZF’s exacting tolerances, making it indispensable for maintaining driveline integrity in commercial vehicles and off-highway equipment.
Symptoms of Failure
- Erratic gear engagement and clutch chatter: When the disc carrier splines wear, the clutch packs lose alignment, causing harsh shifting and vibration during acceleration.
- Progressive transmission oil leaks: A warped or cracked carrier compromises the seal between the COVER (4646301349) and the housing, leading to fluid seepage around the bell housing.
- Intermittent power loss under load: Worn carrier pockets allow clutch discs to slip, resulting in RPM flare without corresponding vehicle speed increase, especially on inclines.
- Metallic debris in transmission fluid: Fretting corrosion on the carrier’s contact surfaces generates fine metal particles that contaminate the hydraulic system.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4646.298.913 |
| Material | High-tensile alloy steel, induction-hardened |
| Outer Diameter | 198 mm (estimated) |
| Inner Spline Diameter | 42 mm (estimated) |
| Overall Height | 65 mm (estimated) |
| Weight | 2.85 kg (estimated) |
| OEM Reference | ZF 4646.298.913 |
| Surface Treatment | Phosphate coating for corrosion resistance |
Compatibility
This disc carrier is specifically designed for the ZF WG311 series, but it also shares dimensional compatibility with select models in the WG180, WG200, and WG250 families that utilize a 42mm spline shaft. The carrier works in conjunction with the 螺栓 (0636115293) and 螺栓 (0736300232) fasteners to secure the clutch pack assembly. Always verify your transmission’s serial number against ZF’s parts catalog before installation, as variations exist between early and late production units.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101173 | TRANSMISSION HOUSING | Encloses the gear train and supports the disc carrier |
| 4646301349 | COVER | Seals the rear of the transmission and guides the output shaft |
| 0636115293 | 螺栓 | M10 mounting bolt for carrier retention |
| 0736300232 | 螺栓 | M12 flange bolt for cover-to-housing connection |
| 4475280208 | SCREW PLUG | Seals hydraulic test ports on the housing |
| 0634316523 | O-RING | Provides static seal between carrier and shaft |
| 0630361026 | SEALING CAP | Protects the carrier’s internal bore from contamination |
| 0501214611 | 齿轮泵 | Supplies hydraulic pressure to the clutch packs |
| 0634313945 | O形圈 | Seals the pump-to-carrier interface |
| 0501322532 | TEMPERATURE SENSOR | Monitors oil temperature near the carrier assembly |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
