Overview
The ZF 4644.155.416 POWER TAKE-OFF is a critical OEM genuine component engineered specifically for the ZF WG200 series transmission. This unit transfers engine torque to auxiliary hydraulic systems, enabling the operation of dump bodies, cranes, or winches without compromising driveline integrity. Positioned on the transmission housing, it interfaces directly with the 4644105413: DISCONNECTION mechanism to ensure precise engagement and disengagement. The SKU 4644.155.416 is manufactured to ZF’s exacting tolerances, guaranteeing a seamless fit and long service life in heavy-duty vocational applications.
Symptoms of Failure
When the ZF 4644.155.416 POWER TAKE-OFF begins to wear, operators typically notice these specific failure indicators:
- Oil leaks at the PTO mounting flange – A common sign that the internal seals have degraded, often visible as drips beneath the transmission.
- Gear slipping under load – The PTO may fail to maintain torque transfer, causing intermittent power loss to auxiliary equipment.
- Unusual grinding or whining noise – Worn bearings or gear teeth produce audible distress, especially during engagement.
- Difficulty engaging or disengaging the PTO – A sticking shift mechanism or damaged shift fork can prevent smooth operation.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4644.155.416 |
| Material | High-strength cast iron housing with hardened steel gears |
| Weight | Approx. 8.2 kg (18.1 lbs) |
| Dimensions (L x W x H) | 280 mm x 180 mm x 150 mm |
| Torque Capacity | Up to 600 Nm (442 ft-lbs) |
| Mounting Interface | SAE B 2-bolt pattern |
| OEM Reference | ZF WG200 Series |
Compatibility
This genuine ZF 4644.155.416 POWER TAKE-OFF is designed for the WG200 transmission family, including models such as the WG180, WG200, and WG210. It is also backward-compatible with select earlier WG series units when used with the correct 4642303093: OUTPUT FLANGE and 0636021010: HEXAGON SCREW kit. For proper installation, ensure the 4644101040: TRANSMISSION HOUSING is free of cracks or wear. Always verify your transmission model and PTO mounting pad configuration before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644105413 | DISCONNECTION | Engages/disengages PTO from transmission |
| 4642303093 | OUTPUT FLANGE | Connects PTO shaft to driveline |
| 0636021010 | HEXAGON SCREW | Secures PTO to transmission housing |
| 4644101040 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301197 | TRANSMISSION HOUSING | Alternate housing variant for WG200 |
| 0730365067 | TYPE PLATE | Identification tag for transmission model |
| 0631311009 | GROOVED STUD | Alignment pin for PTO mounting |
| 0636015073 | HEXAGON SCREW | Fastener for output flange assembly |
| 0634801250 | SEALING RING | Prevents oil leakage at PTO joint |
| 0636305026 | SCREW PLUG | Seals unused PTO port openings |
