Overview
The ZF 4644.154.038 POWER TAKE-OFF is an OEM genuine component engineered for the WG180 and WG200 series transmissions. This unit transfers engine torque to auxiliary hydraulic pumps, enabling operation of dump bodies, winches, or other equipment. Positioned on the transmission housing, it integrates directly with the driveline to deliver reliable power output. The SKU 4644.154.038 ensures precise fitment and durability, reducing downtime in heavy-duty applications. When installed alongside the 4644105475: DISCONNECTION mechanism, it maintains seamless engagement control.
Symptoms of Failure
- Oil leaks around the PTO housing: Worn seals or gaskets cause fluid seepage, often visible near the 4644101134: TRANSMISSION HOUSING interface.
- Gear slipping under load: Internal wear reduces torque transfer, leading to intermittent power loss during hydraulic operation.
- Unusual grinding or whining noises: Damaged bearings or gear teeth produce audible sounds, especially when engaging the PTO.
- Vibration during engagement: Misalignment or worn 4642303097: OUTPUT FLANGE components cause driveline shudder.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4644.154.038 |
| Material | High-grade cast iron with steel gears |
| Weight | Approx. 8.5 kg (18.7 lbs) |
| Dimensions (L x W x H) | 280 mm x 180 mm x 150 mm |
| OEM Reference | ZF 4644.154.038 |
| Mounting Bolts | Requires 0636020211: HEXAGON SCREW (4x M12) |
| Seal Type | Integrated O-ring (compatible with 0634303485: O-RING) |
Compatibility
This power take-off is designed for ZF WG180 and WG200 series transmissions, commonly found in medium-duty trucks and construction vehicles. It fits models with SAE standard mounting pads and supports direct hydraulic pump coupling. For proper installation, verify the 4644301349: HOUSING alignment and use the 0631311009: GROOVED STUD for secure fastening. The unit also works with earlier WG180 variants when paired with the correct 4644301247: THREADED BUSH adapter.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644105475 | DISCONNECTION | Engages/disengages PTO from transmission |
| 4642303097 | OUTPUT FLANGE | Connects PTO to driveline shaft |
| 0636020211 | HEXAGON SCREW | Secures PTO to transmission housing |
| 4644101134 | TRANSMISSION HOUSING | Encloses transmission and PTO assembly |
| 4644301349 | HOUSING | PTO outer casing for gear protection |
| 0730365125 | TYPE PLATE | Identification label for PTO specifications |
| 0631311009 | GROOVED STUD | Alignment pin for PTO mounting |
| 0636305019 | SCREW PLUG | Seals oil ports on PTO body |
| 4644301247 | THREADED BUSH | Adapter for non-standard pump mounts |
| 0634303485 | O-RING | Prevents oil leaks at PTO joints |
