Overview
The ZF 4661.272.041 CLUTCH is a critical torque-transfer component engineered specifically for the WG 90 and WG 94 series transmissions. This OEM genuine part sits within the planetary gear set assembly, where it engages and disengages power flow between the input shaft and the intermediate housing. Designed to withstand high cyclic loads and thermal stress, the 4661.272.041 clutch ensures precise gear engagement in heavy-duty industrial applications. When installed alongside the 4661101042: TRANSMISSION HOUSING, this clutch forms the core of the shift system, directly influencing driveline efficiency and operational longevity.
Symptoms of Failure
- Delayed or harsh gear engagement — A worn 4661.272.041 clutch often causes hesitation or abrupt shifts, particularly when transitioning from neutral to drive under load.
- Transmission oil overheating — Internal slippage from a failing clutch generates excessive friction, leading to elevated fluid temperatures and potential thermal damage to the 4661301108: HOUSING II.
- Loss of torque under acceleration — Operators may notice a gradual power loss or “slipping” sensation, especially during uphill climbs or heavy towing, indicating the clutch can no longer maintain full clamping force.
- Metallic debris in transmission fluid — As friction material wears away, fine metal particles contaminate the oil, often accompanied by a burnt smell and visible sludge on the 0631306174: CYLINDRICAL PIN surfaces.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4661.272.041 |
| OEM Reference | ZF 4661.272.041 |
| Material | High-carbon steel hub with sintered bronze friction lining |
| Outer Diameter | 185 mm |
| Inner Diameter | 95 mm |
| Thickness | 28.5 mm |
| Weight | 1.85 kg |
| Torque Capacity | 1,200 Nm (peak) |
| Operating Temperature Range | -40°C to +150°C |
Compatibility
This clutch is designed for the ZF WG 90 and WG 94 transmission families, which are widely used in municipal trucks, firefighting vehicles, and heavy construction equipment. It is also compatible with the WG 180, WG 200, and WG 250 series when used with the correct 0769123894: TYPE PLATE for identification. Always verify the spline count and housing bore dimensions before installation. The 4661.272.041 clutch interfaces directly with the 4661101042: TRANSMISSION HOUSING and the 4661301108: HOUSING II to ensure proper alignment and oil flow.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101042 | TRANSMISSION HOUSING | Main structural casing that encloses the clutch assembly |
| 4661301108 | HOUSING II | Secondary housing that supports the clutch piston and oil channels |
| 0631306174 | CYLINDRICAL PIN | Alignment pin for precise clutch pack positioning |
| 0769123894 | TYPE PLATE | Identification plate for transmission model verification |
| 0750100022 | SCREW PLUG | Seals oil passages in the clutch housing |
| 4660201008 | SCREW PLUG | Threaded plug for pressure test ports |
| 0636100117 | SCREW PLUG | Drain plug for the clutch oil sump |
| 0501211384 | VALVE | Hydraulic control valve for clutch engagement timing |
| 0732042156 | COMPRESSION SPRING | Returns clutch piston to disengaged position |
| 0768409154 | SCREW PLUG | Sealing plug for clutch accumulator circuit |
