Overview
The ZF 4651.154.003 POWER TAKE-OFF is an OEM genuine component engineered specifically for the WG 100 Series transmission family. This PTO unit mounts directly to the transmission housing, providing a reliable auxiliary power output for hydraulic pumps, winches, or other driven equipment. As a critical interface between the transmission and secondary systems, the 4651.154.003 ensures efficient torque transfer without compromising driveline integrity. This part number is precision-machined to ZF’s original specifications, guaranteeing a seamless fit when paired with the 4651101004: TRANSMISSION HOUSING and the 4651301014: HOUSING assembly.
Symptoms of Failure
When the ZF 4651.154.003 power take-off begins to wear, operators often notice distinct operational issues. Look for these specific failure indicators:
- Oil leaks around the PTO mounting flange – A worn seal or gasket can cause transmission fluid to seep out, leading to low oil levels and potential gear damage.
- Gear slipping or intermittent power output – If the PTO fails to engage consistently, you may experience erratic hydraulic pump performance or complete loss of auxiliary power.
- Unusual grinding or whining noises – Worn bearings or gear teeth within the PTO unit produce audible sounds during operation, especially under load.
- Difficulty engaging or disengaging the PTO – A sticking shift mechanism or internal wear can make it hard to activate the power take-off, requiring excessive force or multiple attempts.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4651.154.003 |
| Product Type | Power Take-Off (PTO) |
| Material | High-strength cast iron with hardened steel gears |
| Weight | Approx. 8.5 kg (18.7 lbs) |
| Mounting Interface | SAE standard bolt pattern for WG100 series |
| OEM Reference | ZF 4651.154.003 (Genuine) |
| Torque Capacity | Up to 450 Nm (332 ft-lbs) |
Compatibility
This genuine ZF power take-off is primarily designed for the WG 100 Series transmissions, including models such as the WG100, WG120, and WG150. It also fits select variants of the WG180 and WG200 series when used with the appropriate 4651301008: TRANSMISSION HOUSING. For proper sealing during installation, always replace the 0634303928: O-RING to prevent fluid migration. Verify your transmission model and housing configuration before ordering to ensure compatibility.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101004 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4651301014 | HOUSING | Secondary housing for PTO mounting |
| 0634303928 | O-RING | Seal between PTO and housing |
| 4651301008 | TRANSMISSION HOUSING | Alternate housing for WG180/200 |
| 4651203002 | SCREEN SHEET | Filter mesh for oil circulation |
| 4651303005 | SCREEN SHEET | Secondary oil strainer element |
| 0636101032 | CAP SCREW | Fastener for housing assembly |
| 0630361028 | SEALING CAP | Protective cover for unused ports |
| 0636304032 | SCREW PLUG | Threaded plug for drain/fill holes |
| 0634303312 | O-RING | Seal for screw plug applications |
