Overview
The ZF 4657.176.013 COUPLING is a critical driveline component engineered specifically for the WG 190 and WG 210 series transmissions. This OEM genuine part serves as the primary torque-transfer interface between the engine output and the transmission input shaft, ensuring smooth power delivery under heavy industrial loads. Positioned within the bell housing assembly, the coupling absorbs torsional vibrations and maintains precise rotational alignment. The SKU 4657.176.013 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life in demanding applications such as construction vehicles, municipal trucks, and material handlers.
Symptoms of Failure
When the ZF 4657.176.013 coupling begins to wear, operators typically notice excessive driveline shudder during acceleration, a common long-tail search query among fleet managers. Another frequent symptom is intermittent gear engagement failure, where the transmission hesitates or clunks when shifting from neutral to drive. You may also detect low-frequency vibration at highway speeds, often mistaken for tire imbalance. In advanced cases, visible metal debris in the transmission fluid indicates coupling material degradation, requiring immediate replacement to prevent damage to adjacent components like the 4657120005: PRESSURE REGULATOR.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.176.013 |
| Outer Diameter | 176 mm |
| Inner Bore Diameter | 38 mm |
| Overall Length | 95 mm |
| Material | High-tensile steel with nitrile damping insert |
| Weight | 2.4 kg |
| Torque Capacity | 1,200 Nm (peak) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This coupling is designed for the ZF WG 191 Series, but it also fits the WG 180, WG 190, WG 200, and WG 210 transmission families. It is commonly used in ZF 6WG200, 5WG190, and 4WG180 models found in off-highway trucks, wheel loaders, and airport ground support equipment. For proper installation, ensure the mating shaft is free of burrs and that the 0630532183: INDENTED RING is correctly seated to prevent axial movement. Always pair this coupling with a new 0501211384: VALVE to maintain hydraulic circuit integrity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657120005 | PRESSURE REGULATOR | Controls hydraulic pressure to clutch packs |
| 0501211384 | VALVE | Directs oil flow for shift timing |
| 0630532183 | INDENTED RING | Secures coupling axial position |
| 4656306145 | PISTON | Actuates clutch engagement |
| 0732042767 | COMPRESSION SPRING | Returns piston to neutral position |
| 0631612064 | SET SCREW | Locks valve body adjustment |
| 0631610026 | SET SCREW | Secures housing alignment |
| 4657101049 | TRANSMISSION HOUSING | Main structural casing |
| 4657301130 | HOUS.FRONT SECT | Front section of transmission housing |
| 4657301131 | HOUSING REAR PART | Rear section of transmission housing |
Frequently Asked Questions
Q: Can the 4657.176.013 coupling be reused after a transmission overhaul?
A: No. ZF recommends replacing this coupling whenever the transmission is disassembled, as the damping insert degrades over time and cannot be reliably re-torqued.
Q: Does this coupling require special tools for installation?
A: Yes. A bearing press and a torque wrench are necessary to seat the coupling evenly. Always install a new 4656306145: PISTON simultaneously to avoid hydraulic imbalance.
Q: How can I verify the coupling is genuine OEM?
A: Check for the ZF logo and part number laser-etched on the outer circumference. Counterfeit parts often lack the precise 176 mm outer diameter and nitrile damping ring color.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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