Overview
The ZF 4644.124.470 POWER TAKE-OFF is a critical auxiliary power interface engineered specifically for the WG180 and WG200 series transmissions. This OEM genuine part, identified by SKU 4644.124.470, mounts directly to the transmission housing to divert engine torque to hydraulic pumps, compressors, or other driven equipment. It sits between the TRANSMISSION HOUSING and the output driveline, ensuring seamless power transfer without interrupting the main gear train. Designed for heavy-duty industrial applications, this PTO unit provides reliable engagement for auxiliary systems in construction, agricultural, and material handling machinery.
Symptoms of Failure
- Oil leaks around the PTO mounting flange: Worn seals or gaskets cause transmission fluid to seep from the joint between the PTO and the TRANSMISSION HOUSING, leading to low fluid levels and potential gear damage.
- Intermittent gear slipping under load: Internal wear on the PTO clutch or shift mechanism results in power loss when engaging hydraulic pumps, especially during high-torque operations.
- Unusual grinding or whining noise: Bearing degradation within the 4644.124.470 produces metallic sounds that intensify with engine RPM, indicating imminent component failure.
- Difficulty engaging or disengaging the PTO: A sticking shift collar or damaged DISCONNECTION mechanism prevents smooth operation, often requiring excessive force on the control lever.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.124.470 |
| OEM Reference | ZF 4644.124.470 |
| Material | High-grade cast iron housing with hardened steel gears |
| Weight | Approximately 14.5 kg (32 lbs) |
| Dimensions (L x W x H) | 280 mm x 210 mm x 190 mm |
| Mounting Bolt Pattern | 6-hole SAE standard, uses HEXAGON SCREW fasteners |
| Output Shaft Type | Splined, compatible with OUTPUT FLANGE |
| Max Torque Capacity | 450 Nm (332 lb-ft) |
| Seal Type | Double-lip nitrile O-ring |
Compatibility
This genuine ZF 4644.124.470 POWER TAKE-OFF is designed for direct fitment on the following ZF transmission models: WG180 and WG200 series. It is also compatible with select variants of the WG150 and WG210 when used with the appropriate DISCONNECTION kit. Always verify the output shaft spline count and mounting hole pattern against your specific transmission housing before installation. For mixed-model applications, consult your OEM service manual to confirm the correct OUTPUT FLANGE and HEXAGON SCREW specifications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644105475 | DISCONNECTION | Engages/disengages PTO from transmission |
| 4642303097 | OUTPUT FLANGE | Connects PTO shaft to driven equipment |
| 0636020211 | HEXAGON SCREW | Secures PTO to transmission housing |
| 4644101134 | TRANSMISSION HOUSING | Main structural case for gear assembly |
| 4644301349 | HOUSING | Encloses PTO internal components |
| 0730365125 | TYPE PLATE | Identification label for PTO model |
| 0631311009 | GROOVED STUD | Alignment pin for PTO mounting |
| 0636305019 | SCREW PLUG | Seals oil passages in PTO assembly |
| 4644301247 | THREADED BUSH | Reinforces mounting points |
| 0634303485 | O-RING | Prevents fluid leaks at joints |
