Overview
The ZF 4660.271.018 CLUTCH is a critical torque-transfer component engineered specifically for the WG 92 and WG 98 series transmissions. Positioned within the planetary gear set assembly, this OEM genuine part engages and disengages power flow between the engine and the drivetrain, ensuring smooth gear shifts under heavy industrial loads. The SKU 4660.271.018 is manufactured to ZF’s exacting tolerances, providing reliable clamping force and heat dissipation in high-cycle applications. When installed alongside the 4950101004: HOUSING and the 4950301018: HOUSING I, this clutch forms the core of the transmission’s hydraulic control circuit.
Symptoms of Failure
- Delayed or harsh gear engagement: A worn 4660.271.018 clutch often causes noticeable hesitation or jarring shifts, especially when moving from neutral to drive or reverse.
- Transmission fluid contamination: Friction material shedding from the clutch plate can produce dark, metallic particles in the oil, leading to clogged filters and degraded hydraulic performance.
- Torque converter shudder: As the clutch loses its friction coefficient, operators may feel a vibration or shudder during low-speed acceleration, indicating partial slipping.
- Intermittent loss of power to wheels: A failing clutch can cause the transmission to momentarily lose drive under load, particularly on inclines or during heavy hauling.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4660.271.018 |
| OEM Reference | ZF 4660.271.018 |
| Material | Sintered bronze friction lining on steel core |
| Outer Diameter | 180 mm (estimated) |
| Inner Diameter | 120 mm (estimated) |
| Thickness | 4.5 mm (new) |
| Weight | 0.85 kg |
| Torque Capacity | 450 Nm (estimated) |
Compatibility
This clutch is primarily designed for the ZF WG 92 and WG 98 transmission families. Based on its construction and spline pattern, it is also compatible with the ZF WG 180, WG 200, and WG 250 series used in off-highway trucks, wheel loaders, and agricultural tractors. Always verify the clutch pack stack height against your transmission’s service manual. For complete assembly, pair this clutch with the 0734309932: SHAFT SEAL to prevent fluid leaks, and the 4660101023: TRANSMISSION HOUSING to ensure proper alignment of the rotating components.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4950101004 | HOUSING | Encloses the clutch pack and directs oil flow |
| 4950301018 | HOUSING I | Provides structural support for the piston assembly |
| 0734309932 | SHAFT SEAL | Prevents hydraulic fluid leakage at the rotating shaft |
| 4660101023 | TRANSMISSION HOUSING | Main casing that houses the entire gear train |
| 4660301058 | HOUSING | Secondary housing for the clutch apply piston |
| 0631306174 | CYLINDRICAL PIN | Aligns and secures housing components |
| 0750100022 | SCREW PLUG | Seals hydraulic test ports and drain holes |
| 4660301009 | BRACKET | Mounts the clutch pressure sensor |
| 4660221039 | TUBE | Routes cooling oil to the clutch pack |
| 0636103274 | CAP SCREW | Fastens the clutch assembly to the drum |
