Overview
The ZF 4642.151.066 CLUTCH is a critical internal component engineered specifically for the WG 150 series transmission. This OEM genuine part functions as the primary torque-transfer mechanism, engaging and disengaging power flow between the engine and the gearset within the transmission housing. As a direct replacement for the SKU 4642.151.066, this clutch assembly ensures precise hydraulic actuation and reliable load holding under high-stress industrial applications. It sits within the forward clutch pack section of the WG 150, working in tandem with the 4642101108: TRANSMISSION HOUSING to maintain structural integrity and alignment during operation.
Symptoms of Failure
When the ZF 4642.151.066 clutch begins to wear, operators often notice specific performance degradation. Gear slipping under load is a primary indicator, where the transmission fails to hold torque during acceleration or incline operation. Delayed or harsh engagement occurs when the clutch pack loses friction material, causing erratic shifting behavior. Overheating transmission fluid is another common symptom, as worn clutches generate excessive heat through friction. Additionally, metallic debris in the oil pan signals that the clutch plates have begun to disintegrate, requiring immediate replacement of the 4642.151.066 unit.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4642.151.066 |
| OEM Reference | ZF 4642.151.066 |
| Material | Sintered bronze friction plates with steel separator discs |
| Weight | 2.4 kg (5.3 lbs) |
| Outer Diameter | 180 mm |
| Inner Diameter | 120 mm |
| Plate Count | 5 friction / 5 steel |
| Operating Pressure | 12-15 bar |
Compatibility
This clutch assembly is primarily designed for the ZF WG 150 series transmission, but it also fits select variants within the WG family. Compatible models include the WG 150, WG 180, and WG 200 transmissions, where the clutch pack dimensions and spline count match. It is also suitable for certain WG 120 configurations that share the same clutch drum design. For proper installation, ensure the 4642301208: TRANSMISSION HOUSING is inspected for wear, and the 0730365125: TYPE PLATE is referenced to verify transmission series. The 0631311009: GROOVED STUD must also be torqued to specification during reassembly to prevent clutch pack misalignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101108 | TRANSMISSION HOUSING | Encloses and supports the clutch assembly |
| 4642301208 | TRANSMISSION HOUSING | Alternate housing for WG series |
| 0730365125 | TYPE PLATE | Identifies transmission model and specs |
| 0631311009 | GROOVED STUD | Secures clutch pack alignment |
| 4642301168 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4642301169 | SCREEN SHEET | Secondary filtration element |
| 0636100621 | HEXAGON SCREW | Fastens housing components |
| 0630361029 | SEALING CAP | Prevents fluid leakage |
| 4642306254 | ADAPTER | Connects clutch to hydraulic circuit |
| 0634303340 | O-RING | Seals clutch piston bore |
