Overview
The ZF 4660.173.017 CLUTCH is a critical torque-transfer component engineered specifically for the WG 92 and WG 98 transmission series. This OEM genuine part serves as the primary engagement mechanism, managing the connection between the engine and the gear train within the transmission housing. Positioned directly within the clutch pack assembly, the 4660.173.017 ensures smooth power delivery and precise gear selection under heavy-duty industrial loads. When installed alongside the 4660101020: TRANSMISSION HOUSING, this clutch maintains structural alignment and hydraulic pressure integrity. The SKU 4660.173.017 is manufactured to ZF’s original specifications, guaranteeing a direct fit and long service life in demanding environments such as mining, construction, and material handling equipment.
Symptoms of Failure
- Delayed or harsh gear engagement: As the clutch wears, operators may notice a pronounced lag or jarring sensation when shifting between forward and reverse gears, indicating insufficient friction material.
- Transmission overheating under load: A failing 4660.173.017 can cause excessive slippage, generating abnormal heat that triggers warning lights or reduces system efficiency.
- Loss of torque during acceleration: Worn clutch plates result in power loss, particularly when climbing grades or moving heavy payloads, often accompanied by a burning smell from the transmission fluid.
- Hydraulic fluid contamination: Debris from a degrading clutch can migrate into the 4660301056: HOUSING II, clogging valves and reducing overall hydraulic pressure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4660.173.017 |
| Type | Wet Multi-Plate Clutch |
| Outer Diameter | 173 mm (estimated) |
| Inner Diameter | 120 mm (estimated) |
| Friction Material | Sintered Bronze / Paper Composite |
| Weight | 1.8 kg (approx.) |
| OEM Reference | ZF 4660.173.017 |
| Operating Pressure | 12–18 bar |
Compatibility
This clutch is designed for ZF’s WG series powershift transmissions, with primary application in the WG 92 and WG 98 models. It is also compatible with the WG 180 and WG 200 series when used in specific clutch pack configurations. The 4660.173.017 interfaces directly with the 0631306174: CYLINDRICAL PIN for precise alignment and the 0769123894: TYPE PLATE for identification. Always verify your transmission’s serial number against ZF’s parts catalog before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660101020 | TRANSMISSION HOUSING | Encloses and supports all internal gear and clutch assemblies |
| 4660301056 | HOUSING II | Secondary casing for hydraulic valve and clutch pack retention |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for precise clutch stack positioning |
| 0769123894 | TYPE PLATE | Identification tag with transmission model and serial number |
| 0750100022 | SCREW PLUG | Seals hydraulic test ports and drain openings |
| 4660221031 | SUCTION TUBE | Transmits oil from sump to pump inlet |
| 0634100317 | O-RING | Static seal between housing sections |
| 0636103273 | CAP SCREW | Fastener for clutch pack retention plate |
| 0634306311 | O-RING | Dynamic seal for hydraulic piston bore |
| 4660321029 | FIXING PLATE | Locks clutch pack to input shaft |
