Overview
The ZF 4657.154.017 Power Take-Off (PTO) is a critical output assembly engineered specifically for the WG191 and WG211 series transmissions. This OEM genuine part transfers engine torque to auxiliary hydraulic pumps, enabling operation of dump bodies, winches, and other secondary equipment. The SKU 4657.154.017 mounts directly to the transmission housing, interfacing with the main gear train to provide a reliable power source without compromising driveline integrity. As a direct replacement unit, it ensures seamless integration with existing transmission architecture, maintaining factory-specified clearance and lubrication paths.
Symptoms of Failure
- Oil leaks around the PTO mounting flange – Worn gaskets or housing cracks allow transmission fluid to escape, often visible as drips under the vehicle after extended operation.
- Intermittent gear engagement or slipping – When the PTO fails to maintain constant mesh, operators experience loss of hydraulic pressure during critical lifting or pumping tasks.
- Unusual grinding or whining noise – Bearing degradation within the 4657.154.017 assembly produces metallic sounds that intensify under load, signaling imminent failure.
- Reduced auxiliary power output – A failing PTO cannot transmit full torque, causing slower hydraulic cycle times and reduced equipment performance.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.154.017 |
| OEM Reference | ZF 4657.154.017 |
| Material | High-strength cast iron with hardened steel gears |
| Weight | 4.2 kg (9.3 lbs) |
| Dimensions (L x W x H) | 210 mm x 140 mm x 120 mm |
| Mounting Bolt Pattern | 4-hole, 80 mm spacing |
| Max Torque Capacity | 350 Nm |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This Power Take-Off is designed for ZF WG191 and WG211 series transmissions, commonly found in medium-duty trucks, construction equipment, and agricultural machinery. It is also compatible with earlier WG180 and WG200 variants when paired with the correct TRANSMISSION HOUSING (4657101049). For proper alignment, the HOUS.FRONT SECT (4657301130) and HOUSING REAR PART (4657301131) must be inspected for wear. Secure installation requires the CYLINDRICAL PIN (0631306816) to ensure precise gear mesh. Always verify transmission model and PTO drive gear configuration before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101049 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657301130 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657301131 | HOUSING REAR PART | Rear section supporting output bearings |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise assembly |
| 0636102489 | CAP SCREW | Fastener for housing attachment |
| 4656301148 | FIXING PLATE | Retains PTO in position |
| 0636102463 | CAP SCREW | Mounting bolt for PTO flange |
| 4657201133 | SCREEN SHEET | Filter mesh for oil circulation |
| 0636115287 | CAP SCREW | Secondary fastener for cover plate |
| 4657301065 | PLATE | Spacer or cover component |
