Overview
The ZF 0501.225.015 MOTOR is a critical hydraulic drive component engineered for high-torque applications within ZF’s construction machinery transmission assemblies. This OEM genuine part, identified by SKU 0501.225.015, functions as the primary power input interface, converting hydraulic pressure into rotational force to drive the transmission’s planetary gear sets. Typically mounted directly to the pump drive housing, this motor ensures precise speed control and reliable power delivery under extreme load conditions. When paired with a compatible 4699004121: GK25 gear kit, it forms the core of the drivetrain’s power transfer system.
Symptoms of Failure
- Intermittent gear slipping under load: A worn motor often fails to maintain consistent hydraulic pressure, causing the transmission to momentarily lose drive power during heavy excavation or lifting operations.
- External hydraulic fluid seepage: Degraded shaft seals on the 0501.225.015 motor lead to visible oil leaks around the mounting flange, often mistaken for housing gasket failures.
- Erratic speed response: When the motor’s internal swashplate or bearings degrade, operators report delayed acceleration or sudden jerking motions during low-speed maneuvering.
- Excessive operational noise: A failing motor produces a distinct whining or grinding sound, particularly during cold starts, indicating internal component wear that can damage the 4699101098: HOUSING assembly.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.225.015 |
| Type | Hydraulic Axial Piston Motor |
| Displacement | 28.0 cm³/rev (estimated) |
| Maximum Pressure | 350 bar (5,076 psi) |
| Housing Material | High-Grade Ductile Cast Iron |
| Weight | 12.4 kg (27.3 lbs) |
| OEM Reference | ZF 0501.225.015 |
| Seal Kit Compatible | 0634303980: O-RING |
Compatibility
This motor is specifically engineered for ZF’s WG-series powershift transmissions used in wheel loaders, telehandlers, and excavators. It directly replaces the original motor in WG180, WG200, and WG250 models. The 0501.225.015 interfaces with the 4699102146: INPUT shaft assembly and the 4699103059: OUTPUT flange. For complete drivetrain restoration, verify housing compatibility with your specific transmission variant before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699004121 | GK25 | Gear kit for torque multiplication |
| 4699101098 | HOUSING | Main transmission casing |
| 4699102146 | INPUT | Primary drive shaft assembly |
| 4699103059 | OUTPUT | Final drive flange |
| 4699105044 | TURNTABLE BEARING | Rotary support bearing |
| 4699301184 | HOUSING | Secondary housing component |
| 4699301015 | HOUSING COVER | Protective top cover |
| 4699301085 | COVER | Access panel seal |
| 4699301014 | THREAD PROTECTIVE SHIELD | Thread guard for mounting bolts |
| 0634303980 | O-RING | Hydraulic seal element |
