Overview
The ZF 4644.124.014 POWER TAKE-OFF is a critical auxiliary drive unit engineered specifically for the WG 201 Series transmission family. This OEM genuine part mounts directly to the transmission housing to divert engine torque to hydraulic pumps, compressors, or other secondary equipment. Designed for demanding industrial applications, the 4644.124.014 ensures seamless power extraction without compromising main driveline performance. Its precision-machined gears and robust bearing system allow for sustained high-torque output, making it indispensable for concrete mixers, refuse trucks, and specialized mobile machinery. When paired with a compatible 4644101160: TRANSMISSION HOUSING, this PTO maintains optimal alignment and load distribution.
Symptoms of Failure
- Oil leaks around the PTO mounting flange: Worn gaskets or housing cracks cause fluid seepage, often visible as drips beneath the transmission. This is a common long-tail search query for “ZF PTO oil leak repair.”
- Gear slipping under load: Internal gear wear or damaged shift forks result in intermittent power take-off engagement, especially during hydraulic pump activation.
- Excessive vibration or whining noise: Bearing degradation within the 4644.124.014 produces a high-pitched sound during operation, indicating imminent failure.
- Difficulty engaging or disengaging the PTO: Pneumatic or mechanical linkage issues, often traced back to a worn 4644301189: THREADED BUSH, prevent proper actuation.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4644.124.014 |
| OEM Reference | ZF WG201 Series PTO |
| Material | High-strength cast iron housing, hardened steel gears |
| Weight | Approx. 14.5 kg (32 lbs) |
| Dimensions (L x W x H) | 280 mm x 180 mm x 210 mm |
| Input Torque Capacity | Up to 600 Nm |
| Mounting Interface | SAE B or C (dependent on application) |
| Sealing System | Includes 0634306198: O-RING and 4475280043: SCREW PLUG |
Compatibility
This genuine ZF 4644.124.014 power take-off is designed for the WG 201 Series, but it also retrofits to earlier WG180 and WG200 models with proper adapter kits. It integrates directly with the 4644301323: TRANSMISSION HOUSING used in WG200 variants. For complete assembly, ensure the 4644301161: COVER PLATE and 0636100621: HEXAGON SCREW are correctly torqued. Always verify spline count and shift mechanism compatibility before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101160 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301323 | TRANSMISSION HOUSING | Alternate housing for WG200 models |
| 4644301189 | THREADED BUSH | Wear-resistant insert for shift linkage |
| 4475280043 | SCREW PLUG | Seals oil passages and inspection ports |
| 0634306198 | O-RING | Prevents fluid leaks at mating surfaces |
| 0730365067 | TYPE PLATE | Identification tag for transmission specs |
| 4644301161 | COVER PLATE | Protects internal components from debris |
| 0636100621 | HEXAGON SCREW | Fastener for housing and cover assembly |
| 0631610020 | SET SCREW | Secures shift fork or bearing retainers |
| 0501218540 | BREATHER | Equalizes internal pressure and vents moisture |
