Overview
The ZF 4657.304.032 DISC CARRIER is a critical rotating component engineered for the WG210 series transmission. This OEM genuine 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 directly within the main shaft assembly, the disc carrier interfaces with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to maintain structural integrity. The SKU 4657.304.032 is machined to exact OEM tolerances, making it a direct replacement for worn units in ZF WG210 gearboxes.
Symptoms of Failure
When the ZF 4657.304.032 disc carrier deteriorates, operators often notice gear slipping under load—a condition where the transmission fails to hold torque during acceleration or uphill operation. Another common symptom is erratic shifting or delayed engagement, caused by worn carrier splines that no longer grip the clutch discs properly. Metallic debris in the transmission oil pan frequently indicates carrier wear, as the hardened steel surface begins to flake. Finally, abnormal vibration or shuddering during gear changes points to a misaligned or cracked disc carrier, which can damage the HOUSING REAR PART if left unaddressed.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.304.032 |
| Material | High-strength alloy steel, heat-treated |
| Outer Diameter | 180 mm (estimated) |
| Inner Spline Diameter | 45 mm (estimated) |
| Weight | 2.8 kg (estimated) |
| OEM Reference | ZF 4657.304.032 |
| Surface Finish | Nitrided for wear resistance |
Compatibility
This disc carrier is primarily designed for the ZF WG210 series, but it also fits select models in the WG180, WG200, and WG220 families due to shared clutch pack dimensions. Always verify the spline count and carrier thickness against your transmission’s service manual. The carrier works in conjunction with the HOUSING REAR PART to complete the rear clutch assembly. For mixed-model fleets, cross-reference the part number 4657.304.032 with ZF application charts to confirm fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101051 | TRANSMISSION HOUSING | Encloses the gear train and supports shafts |
| 4657201151 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4657201103 | HOUSING REAR PART | Rear housing section for output shaft |
| 4472239184 | HOUSING REAR PART | Alternate rear housing variant |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Locks carrier to shaft |
| 4657301032 | SCREEN SHEET | Filter screen for oil circuit |
| 4657301033 | SCREEN SHEET | Alternate filter screen variant |
| 0636100803 | CAP SCREW | Secondary fastener for carrier retention |
Frequently Asked Questions
Q: Can the 4657.304.032 disc carrier be used in a ZF WG180 transmission?
A: Yes, the WG180 shares the same clutch disc diameter and spline profile as the WG210, making this carrier a compatible upgrade. However, always measure the stack height to ensure proper clutch clearance.
Q: What torque specification should I use when installing the cap screws for this carrier?
A: ZF recommends tightening the CAP SCREW (0636100801) to 45 Nm, followed by a 90-degree angle turn. Use a thread locker on all fasteners to prevent loosening under vibration.
Q: How do I know if the disc carrier splines are worn beyond repair?
A: Inspect the spline teeth for a “shark fin” appearance or measurable wear exceeding 0.5 mm. If the carrier rocks on the shaft, replacement with the OEM 4657.304.032 is mandatory to avoid damaging the TRANSMISSION HOUSING.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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