Overview
The ZF 4657.176.020 CLUTCH is a critical power transmission component engineered specifically for the WG 190 and WG 210 series transmissions. This OEM genuine part functions as the primary torque-transfer interface, engaging and disengaging the driveline to enable smooth gear shifts and controlled power delivery. Positioned within the clutch pack assembly, this SKU 4657.176.020 ensures precise hydraulic actuation and consistent friction engagement under heavy industrial loads. When paired with the 4657101041: TRANSMISSION HOUSING, it forms the core of the transmission’s shifting mechanism, directly influencing operational efficiency and durability.
Symptoms of Failure
- Delayed or harsh gear engagement: When the clutch wears, you may experience a noticeable lag or jarring sensation when shifting between forward and reverse, especially under load.
- Transmission fluid contamination: Friction material shedding from a degraded clutch can cause dark, metallic particles in the oil, leading to clogged filters and reduced hydraulic pressure.
- Torque converter shudder: A worn clutch can produce a low-frequency vibration during acceleration, often mistaken for driveline issues, indicating slipping at the friction interface.
- Intermittent power loss: The transmission may momentarily lose drive power on inclines or during heavy towing, as the clutch fails to maintain full lock-up under high torque demands.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4657.176.020 |
| Friction Outer Diameter | 176 mm |
| Friction Inner Diameter | 120 mm |
| Overall Thickness | 4.2 mm |
| Material | Sintered bronze on steel core |
| Weight | 0.85 kg |
| OEM Reference | ZF 4657.176.020 |
| Torque Capacity | 1,200 Nm (estimated) |
Compatibility
This clutch plate is designed for ZF WG 190 and WG 210 series transmissions, commonly found in heavy-duty construction vehicles, mining trucks, and agricultural machinery. It is also compatible with the WG 180 and WG 200 variants where clutch pack dimensions match. For proper installation, ensure the 4657201028: HOUS.FRONT SECT and 4657201013: HOUSING REAR PART are free of scoring or warping. The 0631306792: CYLINDRICAL PIN must be correctly aligned to prevent clutch pack misalignment during reassembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101041 | TRANSMISSION HOUSING | Encloses and supports all internal transmission components |
| 4657201028 | HOUS.FRONT SECT | Front section of the housing, aligns clutch and pump assembly |
| 4657201013 | HOUSING REAR PART | Rear housing section, supports output shaft and bearings |
| 0631306792 | CYLINDRICAL PIN | Locates and secures clutch pack alignment during assembly |
| 0636100801 | CAP SCREW | Fastens housing sections with precise torque retention |
| 4656301148 | FIXING PLATE | Prevents axial movement of clutch pack components |
| 4657301034 | SCREEN SHEET | Filters debris from hydraulic fluid entering clutch circuit |
| 4657301035 | SCREEN SHEET | Secondary filtration for return line oil flow |
| 0636100803 | CAP SCREW | Secures clutch pressure plate to hub assembly |
| 0631311009 | GROOVED STUD | Provides threaded alignment for clutch pack retention |
