Overview
The ZF 4646.298.915 DISC CARRIER is a critical internal component engineered for the WG310 series and select ZF WG transmissions. This OEM genuine part functions as the central hub that supports and aligns the clutch disc packs within the planetary gearset. By maintaining precise disc spacing, it ensures smooth torque transfer and reliable gear engagement. The SKU 4646.298.915 is machined to exact OEM tolerances, making it a direct replacement for worn units. This disc carrier sits directly inside the TRANSMISSION HOUSING, where it interfaces with the shift system to manage hydraulic pressure distribution across the clutch plates.
Symptoms of Failure
- Erratic gear engagement or slipping under load: When the disc carrier wears, clutch packs lose proper alignment, causing intermittent slipping during acceleration or hill climbing.
- Metallic grinding or chattering noises from the transmission: A worn carrier allows disc wobble, leading to metal-on-metal contact inside the HOUSING assembly.
- Delayed or harsh shifting between forward gears: Misaligned discs disrupt hydraulic timing, resulting in noticeable shift shock or hesitation when moving from neutral to drive.
- Contaminated transmission fluid with metallic debris: Carrier wear generates fine metal particles that clog filters and accelerate damage to adjacent components like the 螺栓 and valve body.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4646.298.915 |
| Material | High-strength alloy steel (heat-treated) |
| Outer Diameter | 185 mm (estimated) |
| Inner Diameter | 95 mm (estimated) |
| Thickness | 22 mm (estimated) |
| Weight | 1.8 kg (estimated) |
| OEM Reference | ZF 4646.298.915 (Genuine) |
| Surface Finish | Phosphate coated for corrosion resistance |
Compatibility
This disc carrier is specifically engineered for the WG 310 Series transmission family, but it also fits the following ZF models: WG 258 Series, WG 260 Series, WG 261 Series, WG 308 Series, and WG 311 Series. It is a direct replacement for units in medium-duty commercial vehicles and industrial equipment. Always verify your transmission serial number against the TYPE PLATE to confirm compatibility before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101162 | TRANSMISSION HOUSING | Main structural casing that encloses the gearset and disc carrier. |
| 4646301334 | HOUSING | Secondary housing component supporting the clutch assembly. |
| 0636115293 | 螺栓 | Fastener used to secure the disc carrier to the shaft. |
| 0730365125 | TYPE PLATE | Identification plate with transmission model and serial number. |
| 4646201003 | POT | Hydraulic piston component for clutch actuation. |
| 4646106024 | SHIFT SYSTEM | Valve body and actuator assembly controlling gear selection. |
| 4646306071 | GASKET | Seal between housing sections to prevent fluid leaks. |
| 4646306072 | ADAPTER PLATE | Mounting plate for transmission-to-engine interface. |
| 4646306073 | GASKET | Secondary seal for the adapter plate connection. |
| 0636102065 | CAP SCREW | High-tensile bolt for housing fastening. |
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