ZF 4657.155.411 POWER TAKE-OFF for WG171 | OEM Genuine Part

Overview

The ZF 4657.155.411 POWER TAKE-OFF (PTO) is a critical OEM genuine component engineered specifically for the WG 171 series transmission. This unit provides a mechanical interface to divert engine power from the transmission to auxiliary hydraulic pumps or other driven equipment, enabling vehicle functions such as dump body operation, winch power, or crane rotation. The SKU 4657.155.411 sits on the side of the main gearbox housing, engaging directly with the transmission’s internal gearing to deliver reliable torque output. As a genuine ZF part, it ensures precise fitment and long service life in demanding industrial applications.

Symptoms of Failure

• Oil leaks around the PTO mounting flange: Worn seals or gaskets on the 4657.155.411 can cause transmission fluid to seep out, leading to low oil levels and potential gear damage.
• Intermittent power take-off engagement or gear slipping: Internal wear on the shift fork or clutch mechanism results in incomplete engagement, causing the PTO to disengage under load or fail to spin auxiliary equipment.
• Unusual grinding or whining noises during operation: Bearing failure or gear tooth damage inside the PTO produces audible noise, especially when the unit is engaged under heavy torque.
• Vibration or shuddering from the PTO housing: Misalignment or worn mounting points can transmit excessive vibration through the TRANSMISSION HOUSING, indicating imminent failure.

Technical Specifications

Compatibility

This genuine ZF 4657.155.411 PTO is designed for the WG 171 transmission series. It is also compatible with the WG 180, WG 200, and WG 210 series models when used with the appropriate adapter kit. The unit interfaces directly with the HOUS.FRONT SECT and requires proper alignment with the SCREEN SHEET and TUBE for optimal oil flow. Always verify your transmission model and PTO mounting pad configuration before ordering.

Related Components

Frequently Asked Questions

Q: How do I know if the 4657.155.411 PTO is compatible with my WG 171 transmission?
A: Check the PTO mounting pad on your transmission. The 4657.155.411 uses a 4-bolt SAE “B” pattern. If your transmission has this pad, the PTO will fit directly. For other WG series models, an adapter may be required.

Q: What causes premature failure of this power take-off unit?
A: The most common causes are low transmission oil level, contaminated oil, or improper alignment during installation. Always replace the O-RING and CAP SCREW when reinstalling to prevent leaks.

Q: Can I rebuild the 4657.155.411 instead of replacing it?
A: While internal gears and bearings can be replaced, genuine ZF PTOs are precision-assembled. For critical applications, we recommend replacing the complete unit to ensure proper torque capacity and reliability.