Overview
The ZF 4657.154.008 POWER TAKE-OFF is a critical OEM genuine component engineered specifically for the WG 210 Series transmission family. This unit interfaces directly with the transmission housing to divert engine torque to auxiliary hydraulic systems, such as dump truck pumps or concrete mixer drives. As a genuine ZF part, the SKU 4657.154.008 ensures precise gear mesh alignment and oil flow integrity within the PTO housing assembly. It mounts securely against the TRANSMISSION HOUSING, relying on the structural support of the HOUS.FRONT SECT and the HOUSING REAR PART to maintain concentric alignment under heavy load.
Symptoms of Failure
- Hydraulic system pressure drop or intermittent PTO engagement: Worn internal gears or bearings in the 4657.154.008 unit cause slippage, leading to erratic pump operation.
- Oil seepage from the PTO mounting flange: Degraded seals allow transmission fluid to escape, often visible as drips near the CYLINDRICAL PIN alignment bore.
- Grinding or whining noise during PTO activation: Metal fatigue or debris contamination produces audible distress, especially when the unit is under partial load.
- Difficulty engaging or disengaging the PTO lever: Internal shift fork wear or shaft binding prevents smooth actuation, requiring excessive force.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4657.154.008 |
| Weight | 8.2 kg (18.1 lbs) |
| Housing Material | High-strength aluminum alloy |
| Input Speed Range | Up to 2500 RPM |
| Mounting Interface | SAE B 2-bolt pattern |
| Seal Type | Viton dual-lip with dust shield |
| Torque Capacity | 450 Nm (332 ft-lbs) |
Compatibility
This genuine PTO is primarily designed for the ZF WG 210 Series, but it also fits select models within the WG 180, WG 200, and WG 250 transmission families when used with the correct adapter kit. The 4657.154.008 unit shares its mounting footprint with earlier WG 150 variants, though verification of the HOUSING REAR PART flange thickness is recommended. For WG 210 applications, it directly replaces OEM units without modification. Always confirm the gear ratio match (typically 1:1 or 1.25:1) against your specific transmission build sheet.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201027 | HOUS.FRONT SECT | Front section supporting input shaft |
| 4657201012 | HOUSING REAR PART | Rear section enclosing output bearings |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | Fastener for PTO mounting flange |
| 4656301148 | FIXING PLATE | Retains PTO shift mechanism |
| 4657301032 | SCREEN SHEET | Oil filter mesh for PTO lubrication |
| 4657301033 | SCREEN SHEET | Fine-mesh secondary oil strainer |
| 0636100803 | CAP SCREW | Bolt for housing rear section |
| 4681301040 | OIL FEED.HOUSG. | Pressurized oil supply tube |
