Overview
The ZF 0501.212.153 MOTOR is a critical hydraulic actuation component engineered for demanding construction machinery transmissions. This OEM genuine part converts hydraulic pressure into precise rotational force, directly engaging clutch packs within the transmission housing. Positioned within the valve body assembly, the motor (SKU: 0501.212.153) ensures smooth gear shifts under heavy load conditions. When paired with a robust 4108101155 HOUSING, this motor delivers consistent torque output for loader and dozer drivelines. Its sealed design prevents contamination ingress, maintaining hydraulic integrity across extreme operating temperatures.
Symptoms of Failure
- Delayed or erratic gear engagement: Worn internal seals cause pressure loss, resulting in sluggish shifts when operating excavators or wheel loaders.
- Hydraulic oil contamination: Degraded motor components shed metallic debris into the circuit, often visible during routine fluid analysis.
- Audible whining or grinding noises: Bearing wear within the motor produces high-frequency sounds during transmission operation, particularly at low RPM.
- Intermittent loss of drive: A failing motor may cause sudden disengagement of clutches, especially under heavy torque demands in construction applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0501.212.153 |
| Type | Hydraulic Motor (Gear-Type) |
| Operating Pressure | 25-35 bar (peak 45 bar) |
| Displacement | 12.5 cm³/rev |
| Material | Hardened Steel / Aluminum Alloy |
| Weight | 3.2 kg (7.1 lbs) |
| OEM Reference | ZF 0501.212.153 |
| Seal Type | NBR (Nitrile) / FKM (Viton) |
Compatibility
This motor is engineered for ZF WG-series powershift transmissions commonly used in construction machinery. Verified compatible models include:
- ZF WG180 (Wheel Loaders, Telehandlers)
- ZF WG200 (Excavators, Dozers)
- ZF WG120 (Backhoe Loaders, Compactors)
- ZF WG310 (Large Mining Trucks)
For complete assembly, ensure the 0501314793 COVER is properly torqued to prevent fluid leaks. The 0735370299 TAPERED ROLLER BEARING supports axial loads within the motor housing, while the 0501317874 HOUSING provides structural rigidity for high-cycle operation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101155 | HOUSING | Encloses motor assembly, channels hydraulic fluid |
| 0501314793 | COVER | Seals motor cavity, prevents contamination |
| 0735370299 | TAPERED ROLLER BEARING | Supports rotor shaft, reduces friction |
| 0501317874 | HOUSING | Mounting base for motor components |
| 0501317875 | ROLLER | Transfers motion within gear set |
| 0501298376 | PISTON | Converts hydraulic pressure to linear force |
| 0501317876 | COMPRESSION SPRING | Returns piston to neutral position |
| 0501314823 | BUSH | Reduces wear on rotating shafts |
| 0501314795 | CAM DISC | Controls valve timing in hydraulic circuit |
| 0501318669 | HOUSING | Secondary enclosure for auxiliary components |
