Overview
The ZF 4644.154.432 POWER TAKE-OFF is an OEM genuine component engineered specifically for the WG 180 Series transmission family. This PTO unit transfers engine torque to auxiliary hydraulic systems, such as dump bodies, winches, or concrete mixers, by engaging directly with the transmission’s gear train. The SKU 4644.154.432 ensures a precise fit within the driveline assembly, where it mounts to the 4644101131 TRANSMISSION HOUSING and the 4644301228 TRANSMISSION HOUSING to maintain structural integrity under heavy loads.
Symptoms of Failure
When the 4644.154.432 power take-off begins to wear, operators may notice these specific failure indicators:
- Hydraulic oil leaks around the PTO mounting flange – A common sign of seal degradation, often accompanied by fluid pooling beneath the vehicle.
- Gear slipping or intermittent power loss to auxiliary equipment – Worn internal clutches or bearings cause inconsistent torque delivery, especially under load.
- Unusual grinding or whining noises during PTO engagement – Damaged gear teeth or worn shaft splines produce audible distress signals.
- Difficulty engaging or disengaging the PTO – Sticking shift mechanisms or corroded internal components prevent smooth operation.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4644.154.432 |
| OEM Reference | ZF WG180 Series |
| Material | High-strength cast iron housing with hardened steel gears |
| Weight | Approximately 14.5 kg (32 lbs) |
| Mounting Bolt Pattern | 4-bolt SAE B flange |
| Max Input Torque | 600 Nm (442 lb-ft) |
| Operating Temperature Range | -40°C to +120°C (-40°F to +248°F) |
Compatibility
This genuine ZF power take-off is primarily designed for the WG 180 transmission series. It is also compatible with select variants of the WG 200 and WG 150 series, provided the housing configuration matches. For proper installation, ensure the 0730365067 TYPE PLATE is present to verify transmission model and gear ratios, and use the 0631311009 GROOVED STUD for secure mounting alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101131 | TRANSMISSION HOUSING | Encloses and supports the main gear train |
| 4644301228 | TRANSMISSION HOUSING | Secondary housing for PTO mounting interface |
| 0730365067 | TYPE PLATE | Identifies transmission model and specifications |
| 0631311009 | GROOVED STUD | Alignment stud for PTO housing installation |
| 4644301298 | COVER PLATE | Seals unused PTO openings to prevent contamination |
| 0634306525 | O-RING | Provides hydraulic seal between PTO and housing |
| 0636305026 | SCREW PLUG | Closes oil passages during maintenance |
| 4475280078 | ADAPTER | Converts PTO output to different pump flanges |
| 0501316470 | BREATHER | Equalizes internal pressure and vents moisture |
| 4644301279 | SCREEN SHEET | Filters debris from hydraulic oil flow |
