Overview
The ZF 4646.155.012 TOMA DE FUERZA (PTO) is an original OEM component engineered specifically for the WG260 transmission series. This power take-off unit sits on the transmission housing, transferring engine torque to auxiliary hydraulic pumps or driven equipment in construction machinery. As a genuine ZF part, the SKU 4646.155.012 ensures precise gear engagement and reliable power output for demanding applications. This PTO integrates directly with the TRANSMISSION HOUSING to maintain structural integrity and alignment within the drivetrain.
Symptoms of Failure
- Hydraulic oil leaks around the PTO mounting flange: Worn seals or gaskets cause fluid seepage, often visible as drips beneath the transmission housing.
- Gear slipping or intermittent power loss to auxiliary equipment: Internal gear wear or damaged shift forks prevent consistent torque transfer, especially under load.
- Unusual grinding or whining noises during PTO engagement: Bearing failure or gear tooth damage produces audible sounds that worsen with RPM changes.
- Difficulty engaging or disengaging the PTO lever: Corrosion or debris in the shift mechanism creates resistance, requiring excessive force to operate.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4646.155.012 |
| OEM Reference | ZF 4646.155.012 |
| Material | High-strength cast iron housing with hardened steel gears |
| Weight | Approximately 8.5 kg (18.7 lbs) |
| Dimensions (L x W x H) | 280 mm x 180 mm x 160 mm |
| Mounting Bolt Torque | 80 Nm (59 ft-lbs) |
| Max Input Torque | 600 Nm (442 ft-lbs) |
| Operating Temperature | -20°C to 120°C (-4°F to 248°F) |
Compatibility
This PTO is designed for ZF WG260 transmissions commonly used in construction machinery such as wheel loaders, graders, and compactors. It is also compatible with WG180, WG200, and WG250 series transmissions when installed with the correct adapter kit. The unit mounts directly to the POT (power take-off housing) and requires 螺栓 (bolts) for secure fastening. Additional 螺栓 are needed for the final assembly to the transmission case.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101169 | TRANSMISSION HOUSING | Main structural case enclosing gears and shafts |
| 0636115293 | 螺栓 | Mounting bolts for PTO attachment |
| 4646201003 | POT | Power take-off housing adapter |
| 0736300232 | 螺栓 | Secondary mounting bolts for assembly |
| 4475280208 | SCREW PLUG | Seals fluid passages in the housing |
| 0634316523 | O-RING | Prevents oil leaks at joint interfaces |
| 4646108006 | COUNTERSHAFT | Transfers power between gears |
| 4646109016 | PARKING BRAKE | Holds transmission stationary when parked |
| 0501008365 | DISC BRAKE | Provides braking force via friction discs |
| 0501207633 | BRAKE CALIPER | Houses brake pads and actuates braking |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
