Overview
The ZF 4657.155.009 Power Take-Off (PTO) is a critical auxiliary drive unit engineered specifically for the WG 190 and WG 210 series transmissions. This OEM genuine part, identified by SKU 4657.155.009, mounts directly to the transmission housing to transfer engine power to hydraulic pumps, compressors, or other driven equipment. As a direct bolt-on component, it interfaces seamlessly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT, ensuring precise alignment and reliable torque delivery. Designed for heavy-duty industrial applications, this PTO provides consistent performance under sustained loads, making it an indispensable component for operators requiring uninterrupted hydraulic or mechanical power output.
Symptoms of Failure
When the ZF 4657.155.009 Power Take-Off begins to wear, operators may notice several distinct failure indicators. Oil leaks around the PTO mounting flange are a common early sign, often caused by degraded seals or gasket failure between the unit and the HOUSING REAR PART. Gear slipping or intermittent power loss during hydraulic pump engagement suggests worn internal splines or bearing fatigue. Unusual grinding or whining noises from the PTO housing indicate bearing degradation or insufficient lubrication. Vibration during PTO activation often points to misalignment caused by a damaged CYLINDRICAL PIN or worn mounting hardware. Addressing these symptoms promptly prevents secondary damage to the transmission assembly.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 4657.155.009 |
| OEM Reference | ZF 4657.155.009 |
| Material | High-grade cast iron with hardened steel gears |
| Weight | Approx. 8.5 kg (18.7 lbs) |
| Mounting Type | Flange-mounted, 6-bolt pattern |
| Input Speed Range | Up to 2500 RPM |
| Torque Capacity | 450 Nm (332 ft-lbs) |
| Seal Type | Double-lip nitrile rubber |
| Operating Temperature | -20°C to +120°C (-4°F to +248°F) |
Compatibility
This Power Take-Off is designed for direct fitment on ZF WG 190 and WG 210 series transmissions. It is also compatible with the closely related WG 180 and WG 200 models, provided the transmission housing configuration matches the 6-bolt PTO pad. The unit integrates with the TRANSMISSION HOUSING and requires proper alignment using the CYLINDRICAL PIN for precise positioning. For applications using the WG 210, verify the HOUSING REAR PART configuration to ensure correct PTO engagement. Always consult your transmission serial number to confirm compatibility before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101034 | TRANSMISSION HOUSING | Main structural casing that supports the PTO mounting pad |
| 4657201027 | HOUS.FRONT SECT | Front section housing that aligns with the PTO drive gear |
| 4657201012 | HOUSING REAR PART | Rear housing component that provides PTO seal surface |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for precise PTO positioning |
| 0636100801 | CAP SCREW | Fastener for securing PTO to housing |
| 4656301148 | FIXING PLATE | Retention plate for PTO gear assembly |
| 4657301032 | SCREEN SHEET | Fine mesh filter for PTO oil circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh filter for PTO oil circuit |
| 0636100803 | CAP SCREW | Additional fastener for PTO cover plate |
| 4681301040 | OIL FEED.HOUSG. | Lubrication supply housing for PTO bearings |
Frequently Asked Questions
Q: Can the ZF 4657.155.009 be installed without removing the transmission?
A: Yes, this PTO is designed for external mounting on the transmission housing. However, access to the HOUS.FRONT SECT may require removing adjacent components. Always drain transmission fluid below the PTO level before installation.
Q: What is the typical service life of this Power Take-Off?
A: With proper lubrication and regular inspection of the CYLINDRICAL PIN and seals, the 4657.155.009 typically lasts 5,000–8,000 operating hours in standard industrial applications. Heavy loads or contaminated oil can reduce this lifespan.
Q: Does this part include the mounting hardware?
A: The PTO unit itself does not include fasteners. You will need to order CAP SCREW (0636100801) and the FIXING PLATE (4656301148) separately for a complete installation.
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