ZF 0501.336.363 MOTOR | OEM Genuine Part

Overview

The ZF 0501.336.363 MOTOR is a genuine OEM hydraulic motor unit engineered for integration within ZF powershift transmissions used in heavy construction machinery. This component converts hydraulic pressure into mechanical torque to drive the transmission’s pump and auxiliary systems. Positioned on the transmission housing, it directly interfaces with the driveline to regulate oil flow and gear engagement. The SKU 0501.336.363 is factory-specified for precise fitment and pressure tolerances, ensuring reliable operation under high-load earthmoving conditions. When replacing this motor, technicians often inspect the 4699025161 GP25 gear pump assembly, as both share a common mounting interface within the same hydraulic circuit.

Symptoms of Failure

• Intermittent gear slipping under load — A worn motor fails to maintain consistent hydraulic pressure, causing the transmission to momentarily lose drive torque when climbing or pushing heavy material.
• Hydraulic oil leaks around the motor housing — Degraded shaft seals or cracked casing allow fluid to weep from the motor body, often visible as drips near the transmission bell housing.
• Delayed or harsh shifting — Reduced motor efficiency leads to sluggish clutch pack engagement, resulting in jarring gear changes or hesitation when shifting from forward to reverse.
• Unusual whining or grinding noise — Internal bearing wear or cavitation from low oil flow produces a high-pitched sound that intensifies during acceleration.

Technical Specifications

Compatibility

This genuine ZF motor is primarily used in the WG180 and WG200 series powershift transmissions, commonly found in wheel loaders, graders, and dozers from manufacturers such as Volvo, Liebherr, and Caterpillar. It also fits select WG150 and WG250 models where the hydraulic motor is externally mounted. For complete driveline restoration, pair this motor with the 4699101153 HOUSING to ensure proper alignment, and verify the 4699102106 INPUT shaft spline condition. The 4699103123 OUTPUT flange must also be torqued to factory specs to prevent vibration damage.

Related Components