Overview
The ZF 4644.152.044 CLUTCH is a critical torque-transfer component engineered specifically for the WG 180 and WG 200 series transmissions. This OEM genuine part functions as the primary engagement mechanism, managing power flow between the engine and the drivetrain. Positioned within the clutch housing assembly, the 4644.152.044 ensures smooth gear shifts and reliable load handling under demanding industrial conditions. When paired with a robust 4644101043: TRANSMISSION HOUSING, this clutch delivers consistent performance in heavy-duty applications.
Symptoms of Failure
When the ZF 4644.152.044 CLUTCH begins to wear, operators often notice specific operational issues. Look for these failure indicators:
- Delayed or harsh engagement: The transmission hesitates or jerks when shifting, especially under load.
- Oil contamination: Friction material debris enters the hydraulic circuit, causing erratic pressure and visible sludge in the fluid.
- Torque loss during acceleration: The vehicle or equipment struggles to maintain speed, indicating clutch slippage.
- Unusual noise: Grinding or whining sounds from the transmission housing, particularly during gear changes.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4644.152.044 |
| OEM Reference | ZF 4644.152.044 |
| Material | Sintered steel friction plates with carbon composite |
| Outer Diameter | 152 mm |
| Inner Diameter | 44 mm |
| Weight | 1.8 kg (approx.) |
| Torque Capacity | 450 Nm (estimated) |
| Operating Temperature | -20°C to +120°C |
Compatibility
This clutch is designed for ZF WG 180 and WG 200 series transmissions, commonly found in industrial vehicles, construction equipment, and marine applications. It directly replaces the original clutch pack in these models. For proper installation, ensure the 4644301194: TRANSMISSION HOUSING is free of wear and that the 0730365067: TYPE PLATE is correctly affixed for identification. The 0631311009: GROOVED STUD must also be torqued to specification to secure the assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101043 | TRANSMISSION HOUSING | Encloses and supports internal transmission components |
| 4644301194 | TRANSMISSION HOUSING | Alternative housing variant for specific WG models |
| 0730365067 | TYPE PLATE | Identification plate for transmission model and serial number |
| 0631311009 | GROOVED STUD | Fastener for clutch pack and housing alignment |
| 4644303060 | COVER PLATE | Seals the clutch compartment from debris |
| 4644303061 | COVER PLATE | Alternate cover plate for different housing configurations |
| 0634801098 | SEALING RING | Prevents oil leakage at clutch piston interface |
| 0634801250 | SEALING RING | High-temperature seal for clutch drum |
| 0636305026 | SCREW PLUG | Closes hydraulic test ports on the housing |
| 0636305019 | SCREW PLUG | Drain or fill plug for transmission fluid |
