ZF 0501.339.712 MOTOR | OEM Genuine Part

Overview

The ZF 0501.339.712 MOTOR is a critical hydraulic drive component engineered for demanding construction machinery applications. This OEM genuine part functions as the primary power transfer unit within the transmission assembly, converting hydraulic pressure into mechanical torque to drive the vehicle’s final drive system. The SKU 0501.339.712 is specifically designed to interface with the transmission’s pump and gear train, ensuring precise rotational control for heavy-duty operations. When installed correctly, this motor delivers consistent performance under extreme loads, making it indispensable for wheel loaders, excavators, and other earthmoving equipment.

Symptoms of Failure

• Intermittent power loss during acceleration: A worn ZF 0501.339.712 motor often causes hesitation or surging when the machine is under load, particularly during uphill travel or when digging.
• Hydraulic fluid contamination: Internal seal degradation leads to metal particles in the oil, visible as dark streaks or sludge in the transmission fluid reservoir.
• Abnormal whining or grinding noises: Bearing wear inside the motor produces high-pitched sounds that intensify with engine RPM, signaling imminent failure.
• Reduced travel speed without warning: The machine may suddenly lose top-end speed or fail to reach operating RPM, even with full throttle applied.

Technical Specifications

Compatibility

This motor is engineered for ZF WG series transmissions commonly found in construction machinery. It is directly compatible with the WG180, WG200, and WG240 transmission models. The part also fits select WG160 and WG280 variants used in mid-size wheel loaders and telehandlers. Always verify your transmission serial number before ordering, as minor spline variations exist between early and late production units.

During installation, this motor integrates with several companion components. The 4699025040 GP25 gear pump supplies the necessary hydraulic flow, while the 4699101114 HOUSING encloses the motor assembly. Power enters through the 4699102157 INPUT shaft and exits via the 4699103114 OUTPUT flange. Proper alignment of these four parts is essential to prevent premature wear and oil leaks.

Related Components