Overview
The ZF 0501.215.734 MOTOR is a genuine OEM hydraulic drive motor engineered for integration within ZF’s heavy-duty transmission assemblies. This component converts hydraulic pressure into mechanical rotational force, directly engaging the gear train to propel construction machinery such as wheel loaders and graders. Positioned within the transmission’s power take-off (PTO) unit, the SKU 0501.215.734 ensures precise torque delivery and smooth modulation during low-speed maneuvering. It is a critical element for maintaining driveline integrity, working in concert with the 4699101155 HOUSING to seal and support the rotating assembly.
Symptoms of Failure
- Intermittent gear slipping under load: When the motor loses internal pressure, the transmission may momentarily disengage, causing a sudden loss of traction during digging or climbing operations.
- External hydraulic oil leaks near the PTO housing: Worn seals or a cracked motor casing allow fluid to escape, often pooling around the 4699201018 HOUSING interface.
- Erratic or delayed response to throttle input: A failing motor produces sluggish acceleration or unexpected surges, particularly when shifting between forward and reverse.
- Excessive noise (whining or grinding) from the transmission belly: Internal bearing wear or cavitation generates high-pitched sounds that intensify with engine RPM.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.215.734 |
| Type | Hydraulic Drive Motor |
| Displacement | 28.0 cm³/rev (estimated) |
| Maximum Operating Pressure | 250 bar |
| Flange Mounting | SAE A 2-Bolt |
| Shaft Diameter | 19.05 mm (0.75 in) |
| Housing Material | High-Grade Aluminum Alloy |
| Dry Weight | 4.2 kg (9.3 lbs) |
| OEM Reference | ZF 0501.215.734 |
Compatibility
This ZF motor is primarily designed for the WG180 and WG200 series powershift transmissions, commonly found in compact and mid-size wheel loaders. It also fits select WG150 and WG250 models where the PTO configuration matches the SAE A flange pattern. For proper sealing, always pair this motor with a new 0634801038 SEALING RING and secure it using 0636100132 TORX SCREW fasteners. The 4699309077 HOUSING COVER must be inspected for cracks during installation to prevent contamination.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101155 | HOUSING | Encloses the motor and supports the output shaft |
| 4699201018 | HOUSING | Intermediate casing for gear alignment |
| 4699309077 | HOUSING COVER | Seals the top of the transmission housing |
| 0636100132 | TORX SCREW | High-tensile fastener for housing assembly |
| 0631302072 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634801038 | SEALING RING | Prevents oil leaks at motor-to-housing joint |
| 0636302013 | SCREW PLUG | Closes hydraulic ports during transport |
| 0501319149 | SCREW PLUG | Magnetic drain plug for debris capture |
| 0637101790 | BREATHER | Equalizes internal pressure and vents moisture |
| 0631302221 | CYLINDRICAL PIN | Dowel pin for precise cover alignment |
