Overview
The ZF 4657.176.024 CLUTCH is a critical friction component engineered specifically for the WG 190 and WG 210 series transmissions. Positioned within the planetary gear set assembly, this OEM genuine part is responsible for engaging and disengaging specific gear ratios, enabling smooth power transfer from the engine to the driveline. As a direct replacement for the WG 191 Series, the SKU 4657.176.024 ensures precise hydraulic clamping force and minimal drag during operation. When installed alongside the 4657120005: PRESSURE REGULATOR, it maintains consistent oil flow to the clutch pack, preventing premature wear and thermal degradation.
Symptoms of Failure
- Delayed or harsh gear engagement: A worn 4657.176.024 clutch often causes noticeable hesitation when shifting from neutral to drive or reverse, followed by a jarring engagement.
- Transmission slipping under load: If the clutch disc material is glazed or worn thin, the transmission may slip during acceleration, especially on inclines or when towing heavy loads.
- Burning smell or dark transmission fluid: Friction material shedding from the clutch generates excessive heat, producing a distinct burnt odor and turning the ATF fluid dark brown or black.
- Erratic shift patterns: A failing clutch can cause the transmission to hunt for gears or shift unexpectedly, often accompanied by a loss of torque converter lockup.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.176.024 |
| OEM Reference | ZF 4657.176.024 |
| Outer Diameter | 190 mm (WG 190) / 210 mm (WG 210) |
| Inner Diameter | 135 mm |
| Friction Material | Sintered Bronze on Steel Core |
| Weight | 1.45 kg (3.2 lbs) |
| Torque Capacity | 850 Nm (627 lb-ft) |
| Operating Temperature Range | -20°C to +120°C |
Compatibility
This clutch is primarily designed for the ZF WG 191 Series, but it also fits the WG 180, WG 190, WG 200, and WG 210 transmission models. It is commonly used in medium-duty commercial vehicles, construction equipment, and agricultural machinery. For optimal performance, always pair this clutch with the 0501211384: VALVE to regulate hydraulic pressure, and the 0630532183: INDENTED RING to secure the clutch pack. Additionally, the 4656306145: PISTON must be inspected for scoring or wear during clutch replacement to ensure proper actuation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657120005 | PRESSURE REGULATOR | Controls hydraulic pressure to the clutch pack |
| 0501211384 | VALVE | Directs oil flow for clutch engagement |
| 0630532183 | INDENTED RING | Retains clutch plates in correct alignment |
| 4656306145 | PISTON | Applies force to compress the clutch pack |
| 0732042767 | COMPRESSION SPRING | Returns piston to neutral position |
| 0631612064 | SET SCREW | Adjusts clutch pack clearance |
| 0631610026 | SET SCREW | Secures valve body components |
| 4657101049 | TRANSMISSION HOUSING | Encloses the entire gear train |
| 4657301130 | HOUS.FRONT SECT | Front section of the transmission case |
| 4657301131 | HOUSING REAR PART | Rear section of the transmission case |
Frequently Asked Questions
Q: Can I use the 4657.176.024 clutch in a WG 180 transmission?
A: Yes, this clutch is compatible with WG 180, WG 190, WG 200, and WG 210 models. However, verify the clutch pack thickness (190 mm vs. 210 mm) to match your specific transmission variant.
Q: How often should I replace the indented ring (0630532183) when installing a new clutch?
A: Always replace the indented ring during clutch service. The ring can lose its tension over time, leading to clutch plate misalignment and premature failure of the 4657.176.024 assembly.
Q: What causes the clutch piston (4656306145) to stick?
A: Sticking is typically caused by varnish buildup from degraded transmission fluid or a damaged piston seal. Replace the piston and flush the valve body if you notice sluggish clutch engagement.
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