Overview
The ZF 4644.152.075 CLUTCH is a critical friction component engineered for the WG 180 and WG 200 series transmissions. This OEM genuine part serves as the primary torque-transfer interface within the planetary gear set, engaging and disengaging power flow between the input shaft and the driveline. As a wear-sensitive element, the 4644.152.075 clutch pack must maintain precise hydraulic pressure to ensure smooth shifting under heavy loads. When installed alongside the 4460115043 HOUSING, this assembly creates a sealed chamber that directs oil flow for consistent clutch application. The SKU 4644.152.075 is directly interchangeable with original factory components, guaranteeing dimensional accuracy and material composition that aftermarket parts cannot replicate.
Symptoms of Failure
- Delayed or harsh shifting – When the 4644.152.075 clutch wears thin, hydraulic pressure drops, causing hesitation between gears or abrupt engagement that jerks the vehicle.
- Transmission slipping under load – A failing clutch disc loses friction capacity, allowing the engine to rev without proportional wheel speed increase, especially during uphill climbs or towing.
- Burning smell or dark fluid – Overheated friction material from a glazed 4644.152.075 clutch contaminates the transmission oil, producing a distinct acrid odor and discolored fluid.
- Loss of forward or reverse drive – Complete clutch pack failure results in zero torque transfer, leaving the transmission in neutral despite gear selection.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.152.075 |
| OEM Reference | ZF 4644.152.075 |
| Material | Sintered bronze friction lining on steel core |
| Outer Diameter | 152 mm |
| Inner Diameter | 75 mm |
| Thickness (New) | 2.5 mm |
| Weight | 0.18 kg |
| Operating Pressure | 12–18 bar |
| Temperature Range | -40°C to +120°C |
Compatibility
This 4644.152.075 clutch is designed exclusively for ZF WG 180 and WG 200 series transmissions. It fits all sub-variants including WG 180-2, WG 180-3, WG 200-2, and WG 200-3 models used in construction equipment, agricultural tractors, and material handlers. The clutch interfaces directly with the 4469315012 AXLE DRIVE HOUSING and requires proper preload from the 0750117406 TAPER ROLLER BEARING and 0750117802 TAPERED ROLLER BEARING for correct axial positioning. Always verify your transmission serial number before ordering, as minor revisions may use alternative friction counts.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4460115043 | HOUSING | Encloses clutch pack and directs hydraulic fluid |
| 4469315012 | AXLE DRIVE HOUSING | Supports output shaft and bearing assembly |
| 0750117406 | TAPER ROLLER BEARING | Radial and axial load support for rotating shafts |
| 0750117802 | TAPERED ROLLER BEARING | Secondary bearing for counter-rotating elements |
| 0734319337 | SHAFT SEAL | Prevents oil leakage at shaft exit points |
| 0730161317 | WASHER | Spacing and load distribution for clutch stack |
| 0730161451 | WASHER | Thickness adjustment for clutch clearance |
| 0730161452 | WASHER | Selective fit for end-play control |
| 0730161453 | WASHER | Steel shim for axial tolerance stack |
| 0730161340 | WASHER | Hardened washer for thrust surface protection |
