Overview
The ZF 4646.154.016 Power Take-Off (PTO) is a critical OEM genuine component engineered specifically for the WG 250 Series transmission family. This unit transfers engine torque to auxiliary hydraulic or mechanical systems, such as pumps, compressors, or winches, directly from the transmission’s gear train. Designed for high-duty-cycle applications, the 4646.154.016 ensures reliable power extraction without compromising driveline integrity. The SKU 4646.154.016 is precision-machined to ZF’s exacting tolerances, guaranteeing seamless integration with the TRANSMISSION HOUSING and the HOUSING assembly. Its robust construction minimizes parasitic losses and extends service intervals in demanding industrial environments.
Symptoms of Failure
- Oil leaks around the PTO mounting flange: Worn seals or gaskets cause transmission fluid to weep, often visible as drips under the vehicle or equipment. This is a common long-tail search query for “ZF WG250 PTO oil leak repair.”
- Gear slipping or intermittent power take-off engagement: Internal gear wear or damaged splines result in a loss of torque transfer, especially under load. Operators may notice “PTO slipping under load” or “PTO not engaging fully.”
- Unusual grinding or whining noise during operation: Bearing degradation or gear tooth pitting produces audible noise, often described as “ZF PTO grinding sound” or “whining noise from transmission PTO.”
- Vibration or shuddering when the PTO is activated: Misalignment or worn internal components cause driveline vibration, a symptom frequently searched as “PTO vibration when engaged.”
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 4646.154.016 |
| OEM Reference | ZF 4646.154.016 |
| Material | High-grade cast iron with hardened steel gears |
| Weight | Approx. 8.2 kg (18.1 lbs) |
| Dimensions (L x W x H) | 210 mm x 160 mm x 140 mm |
| Mounting Flange | SAE B 2-bolt pattern |
| Torque Capacity | Up to 450 Nm (332 ft-lbs) |
| Seal Type | Double-lip viton seal |
Compatibility
This Power Take-Off is designed for the ZF WG 250 Series, but its mounting interface and gear ratio also support select models in the WG180, WG200, and WG210 families. It is directly compatible with transmissions using the COVER and HEXAGON SCREW fastening system. Always verify the PTO drive gear count and housing bore dimensions against your specific transmission serial number. For WG250 variants, the 4646.154.016 replaces earlier revisions without modification.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101028 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4646301095 | HOUSING | Secondary housing for PTO mounting |
| 4646301087 | COVER | Protective cover for PTO access port |
| 0636015304 | HEXAGON SCREW | Fastener for housing and cover assembly |
| 0636101828 | CAP SCREW | Secures PTO to transmission housing |
| 4646301102 | COVER SHEET | Gasket or shim for PTO interface |
| 4646301098 | COVER SHEET | Alternate thickness cover sheet |
| 0730365125 | TYPE PLATE | Identification label for transmission |
| 0631311009 | GROOVED STUD | Alignment stud for PTO installation |
| 0636101193 | CAP SCREW | Additional fastener for cover retention |
