Overview
The ZF 4656.176.078 CLUTCH is a critical power transfer component designed for the WG 130 and WG 160 series transmissions. This OEM genuine part sits within the clutch pack assembly, engaging and disengaging gear sets to manage torque flow from the engine to the driveline. As a direct replacement for the SKU 4656.176.078, it ensures precise hydraulic actuation and consistent friction engagement. When paired with a robust TRANSMISSION HOUSING, this clutch maintains the structural integrity required for heavy-duty industrial applications.
Symptoms of Failure
- Delayed or harsh gear engagement: Worn friction surfaces cause hesitation or jarring shifts, often noticeable during acceleration from a stop.
- Transmission overheating: Slipping clutches generate excess heat, leading to fluid degradation and elevated operating temperatures.
- Intermittent power loss under load: The clutch fails to hold torque, resulting in momentary loss of drive power when climbing or hauling heavy loads.
- Unusual hydraulic noise: A failing clutch can cause pressure fluctuations, producing whining or grinding sounds from the valve body area.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4656.176.078 |
| Material | Sintered bronze friction lining with steel core |
| Outer Diameter | 176 mm |
| Inner Diameter | 108 mm |
| Thickness | 4.2 mm |
| Weight | 0.85 kg |
| OEM Reference | ZF 4656.176.078 |
| Operating Pressure | 12-18 bar |
Compatibility
This clutch is engineered for the ZF WG 130 and WG 160 transmission families, commonly found in municipal trucks, construction loaders, and agricultural machinery. It is also compatible with the WG 171 Series, WG 180, and WG 200 models when used in conjunction with the correct HOUS.FRONT SECT and SCREEN SHEET for proper fluid routing. Always verify your transmission serial number against the ZF parts catalog to confirm fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101072 | TRANSMISSION HOUSING | Encloses and supports all internal gear and clutch assemblies |
| 4656301168 | HOUS.FRONT SECT | Front section housing that aligns the input shaft and clutch pack |
| 4656201015 | SCREEN SHEET | Fine mesh filter protecting the clutch hydraulic circuit from debris |
| 4656301037 | TUBE | Hydraulic feed tube directing oil to the clutch piston |
| 0634313514 | O-RING | Seals the clutch piston bore to prevent internal fluid leaks |
| 0636100803 | CAP SCREW | Secures the clutch retaining plate to the drum |
| 4656301169 | HOUSING REAR PART | Rear housing section that supports the output shaft bearing |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for precise positioning of clutch pack components |
| 0636100801 | CAP SCREW | Fastener for the clutch pressure plate assembly |
| 0636100160 | CAP SCREW | Mounting bolt for the clutch drum to the hub |
Frequently Asked Questions
Q: How do I know if the 4656.176.078 clutch is the correct part for my WG 130 transmission?
A: Verify your transmission model and serial number against the ZF parts manual. This clutch is specifically designed for WG 130 and WG 160 units, but always cross-reference the part number stamped on your existing clutch.
Q: Can I replace this clutch without removing the entire transmission?
A: In most cases, the clutch can be accessed by removing the transmission oil pan and valve body. However, for WG 171 Series models, you may need to detach the HOUSING REAR PART to fully extract the clutch pack.
Q: What other seals should I replace when installing this clutch?
A: It is highly recommended to replace the O-RING and all CAP SCREW fasteners to prevent future leaks and ensure proper clamping force.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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