Overview
The ZF 4657.272.010 COUPLING is a precision-engineered OEM genuine part designed specifically for the WG 190 and WG 210 transmission series. This coupling serves as the critical mechanical link between the engine output and the transmission input, ensuring smooth torque transfer and vibration dampening during operation. Positioned directly within the driveline assembly, the SKU 4657.272.010 interfaces with the TRANSMISSION HOUSING to maintain precise alignment and reduce wear on adjacent components. As an OEM genuine part, it guarantees factory-specified tolerances and material integrity for long service life in heavy-duty industrial applications.
Symptoms of Failure
- Oil leaks near the coupling housing: When the 4657.272.010 coupling seal degrades, transmission fluid may escape, leading to low fluid levels and overheating.
- Gear slipping under load: A worn coupling can cause intermittent power loss, especially during acceleration or uphill operation, resulting in erratic shifting.
- Abnormal vibration or shuddering: Excessive play in the coupling assembly transmits driveline oscillations into the cabin or chassis, indicating imminent failure.
- Metallic grinding noises: If the coupling teeth or splines wear unevenly, you may hear harsh contact sounds during gear engagement.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.272.010 |
| Material | High-strength alloy steel with nitrided surface |
| Weight | 2.4 kg (5.3 lbs) |
| Outer Diameter | 145 mm |
| Inner Diameter | 55 mm |
| Length | 85 mm |
| OEM Reference | ZF 4657.272.010 |
| Torque Capacity | 1,200 Nm |
Compatibility
This coupling is engineered for the WG 190 Series and WG 210 Series transmissions. It is also compatible with the WG 180 and WG 200 models when used with the appropriate HOUS.FRONT SECT and HOUSING REAR PART. For complete assembly, ensure the HOUSING REAR SECTION is properly aligned to prevent premature wear. Always verify your transmission model before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101088 | TRANSMISSION HOUSING | Encloses and supports internal gear sets |
| 4657201183 | HOUS.FRONT SECT | Front section of the transmission casing |
| 4657201184 | HOUSING REAR PART | Rear portion of the transmission housing |
| 4657298111 | HOUSING REAR SECTION | Complete rear housing assembly |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing positioning |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4681301015 | FIXING PLATE | Locks coupling in position |
| 4681301016 | SCREEN SHEET | Filter debris from fluid flow |
| 4681301017 | SCREEN SHEET | Secondary filtration element |
| 0636100803 | CAP SCREW | Mounting bolt for coupling assembly |
Frequently Asked Questions
Q: How do I know if the 4657.272.010 coupling is failing?
A: Look for visible oil seepage around the coupling area, unusual driveline vibrations, or intermittent gear slippage. A thorough inspection should also check for play in the spline connection.
Q: Can this coupling be used with aftermarket housings?
A: It is designed exclusively for OEM ZF housings such as the TRANSMISSION HOUSING and HOUS.FRONT SECT. Aftermarket parts may not meet the precise tolerances required.
Q: What is the recommended replacement interval?
A: While there is no fixed schedule, inspect the coupling every 500 operating hours or during major transmission overhauls. Replace immediately if any wear or damage is detected.
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