Overview
The ZF 4644.152.458 CLUTCH is a critical torque-transfer component engineered specifically for the WG 180 and WG 200 series transmissions. This OEM genuine part ensures precise engagement and disengagement of the driveline, directly influencing shift quality and power delivery. Positioned within the clutch pack assembly, the SKU 4644.152.458 works in concert with the TRANSMISSION HOUSING to maintain proper hydraulic pressure and mechanical alignment. When this clutch wears, the entire transmission’s ability to hold gear under load is compromised, making it a high-priority replacement item for industrial applications.
Symptoms of Failure
- Delayed or harsh shifting: A worn 4644.152.458 clutch often causes noticeable lag when shifting between forward and reverse gears, particularly under load.
- Gear slipping under torque: Operators may experience a sudden loss of power transfer, especially during acceleration or uphill operation, indicating the clutch is no longer gripping effectively.
- Contaminated transmission fluid: Friction material from a failing clutch can contaminate the oil, leading to dark, burnt-smelling fluid and potential damage to the HOUSING assembly.
- Unusual vibration or chatter: As the clutch plates wear unevenly, driveline shudder or vibration may occur during engagement, often accompanied by metallic noises.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4644.152.458 |
| Type | Wet Clutch (Oil-Cooled) |
| Outer Diameter | ~180 mm (estimated) |
| Inner Diameter | ~120 mm (estimated) |
| Material | Sintered Bronze / Steel Composite |
| Weight | ~1.8 kg (4.0 lbs) |
| OEM Reference | ZF 4644.152.458 |
| Operating Pressure | 12–16 bar (174–232 psi) |
Compatibility
This clutch is designed for ZF WG 180 and WG 200 series transmissions, commonly found in heavy-duty construction, agricultural, and material handling equipment. It is a direct replacement for the original clutch pack in these models. The part interfaces directly with the GROOVED STUD and the TYPE PLATE for correct orientation. For complete assembly, verify that your transmission housing is compatible with the 4644.152.458 dimensions. Always replace the clutch in conjunction with related seals and the COVER PLATE to prevent premature failure.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101142 | TRANSMISSION HOUSING | Encloses and supports the clutch assembly |
| 4644301301 | HOUSING | Provides structural mounting for internal components |
| 0730365067 | TYPE PLATE | Identifies transmission model and specifications |
| 0631311009 | GROOVED STUD | Secures clutch pack alignment within the drum |
| 4644303060 | COVER PLATE | Seals the clutch housing from debris |
| 4644303061 | COVER PLATE | Alternate cover plate for specific WG variants |
| 4475280078 | ADAPTER | Connects clutch to output shaft assembly |
| 4644106306 | SHIFT SYSTEM | Controls clutch engagement via hydraulic valves |
| 4644306499 | COVER PLATE | Protects shift system from contamination |
| 4644159351 | SHIFT SYSTEM | Secondary shift actuator for multi-speed operation |
