Overview
The ZF 4644.152.484 CLUTCH is a critical torque-transfer component engineered specifically for the WG 180 and WG 200 series transmissions. Positioned within the hydraulic clutch pack assembly, this OEM genuine part directly manages power flow between the engine and drivetrain by engaging and disengaging gear sets under high-pressure oil actuation. As a wear-sensitive friction element, the 4644.152.484 clutch ensures smooth shifting and reliable load holding in heavy-duty industrial applications. When replacing this unit, always inspect the adjacent 4644101208: TRANSMISSION HOUSING for cracks or warpage, as housing integrity directly affects clutch alignment and oil distribution.
Symptoms of Failure
- Delayed or harsh gear engagement: Worn friction material causes the clutch to slip before fully locking, resulting in a noticeable lag or jolt when shifting from neutral to drive.
- Transmission overheating: A failing 4644.152.484 clutch generates excessive heat due to constant slipping, often triggering thermal warnings or burnt oil smell.
- Erratic torque delivery under load: When the clutch pack loses clamping force, the WG 180 transmission may exhibit surging or hesitation during acceleration, particularly in lower gears.
- Oil contamination with metallic debris: As the friction plates degrade, fine metal particles circulate through the hydraulic system, potentially damaging the 4644301333: HOUSING and valve body passages.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number (SKU) | 4644.152.484 |
| OEM Reference | ZF 4644.152.484 |
| Material | Sintered bronze friction lining on steel core |
| Outer Diameter | 152 mm |
| Inner Diameter | 84 mm |
| Thickness (New) | 4.2 mm |
| Weight | 0.48 kg |
| Operating Pressure | 12–18 bar |
| Temperature Range | -20°C to +120°C |
Compatibility
This clutch is designed for ZF WG 180 and WG 200 series transmissions used in off-highway vehicles, agricultural tractors, and material handling equipment. It is a direct fit for models including WG 180, WG 200, and select WG 180 variants with hydraulic clutch packs. For proper installation, verify the condition of the 0730365125: TYPE PLATE to confirm transmission serial number compatibility, and ensure the 0631311009: GROOVED STUD is torqued to factory specifications to prevent clutch pack misalignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101208 | TRANSMISSION HOUSING | Encloses and supports clutch pack assembly |
| 4644301333 | HOUSING | Provides oil routing channels for clutch actuation |
| 0730365125 | TYPE PLATE | Identifies transmission model and revision |
| 0631311009 | GROOVED STUD | Secures clutch pack alignment during assembly |
| 0636305019 | SCREW PLUG | Seals hydraulic test ports in the housing |
| 4644301247 | THREADED BUSH | Reinforces mounting points for clutch piston |
| 0634303485 | O-RING | Prevents oil leakage between clutch drum and hub |
| 4644301257 | ADAPTER | Connects clutch feed line to transmission housing |
| 0634306023 | O-RING | Seals adapter-to-housing interface |
| 4644106231 | SHIFT SYSTEM | Controls hydraulic pressure to engage clutch |
