Overview
The ZF 4646.298.914 DISC CARRIER is a critical internal component engineered for the WG series of powershift transmissions, specifically the WG310 and its related variants. 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. Located within the main gear train assembly, the disc carrier interfaces directly with the TRANSMISSION HOUSING to maintain correct axial clearances. The SKU 4646.298.914 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn units in heavy-duty industrial applications.
Symptoms of Failure
- Erratic gear engagement or slipping under load: A worn disc carrier can cause misalignment of the clutch packs, leading to delayed or incomplete gear shifts, especially during high-torque operations.
- Metallic grinding noises from the transmission housing: When the carrier’s splines or bearing surfaces degrade, you may hear distinct grinding or rattling sounds, indicating internal contact with the HOUSING.
- Transmission fluid contamination with metallic debris: As the disc carrier wears, fine metal particles can enter the oil system, often visible during routine fluid changes or when inspecting the magnetic drain plug.
- Reduced hydraulic pressure in clutch circuits: A damaged carrier can disrupt oil flow paths, resulting in lower-than-specified pressure readings and eventual transmission overheating.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4646.298.914 |
| Material | High-strength alloy steel (case-hardened) |
| Outer Diameter | Approx. 180 mm |
| Inner Spline Diameter | Approx. 45 mm |
| Weight | 2.4 kg (5.3 lbs) |
| Surface Treatment | Phosphate coating for corrosion resistance |
| OEM Reference | ZF 4646.298.914 (Genuine) |
Compatibility
This disc carrier is specifically designed for the ZF WG series powershift transmissions. It is a direct fit for the following models: WG180, WG200, WG258, WG260, WG261, WG308, WG310, and WG311. The part is also compatible with certain WG 250-series variants used in construction and agricultural equipment. Always verify the spline count and axial stack height against your existing carrier before installation. For complete assembly, ensure the 螺栓 and TYPE PLATE are also inspected and replaced if necessary.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101162 | TRANSMISSION HOUSING | Encloses and supports all internal gear and clutch assemblies |
| 4646301334 | HOUSING | Secondary housing for clutch pack alignment |
| 0636115293 | 螺栓 | High-tensile bolt for securing the carrier to the shaft |
| 0730365125 | TYPE PLATE | Identification plate for transmission model and serial number |
| 4646201003 | POT | Oil collection pot for lubrication distribution |
| 4646106024 | SHIFT SYSTEM | Hydraulic shift actuator assembly |
| 4646306071 | GASKET | Sealing gasket between housing sections |
| 4646306072 | ADAPTER PLATE | Mounting plate for auxiliary components |
| 4646306073 | GASKET | Secondary sealing gasket for oil passages |
| 0636102065 | CAP SCREW | Fastener for securing the adapter plate |
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