ZF 4699.170.118 MOTOR | OEM Genuine Part

Overview

The ZF 4699.170.118 MOTOR is a critical hydraulic drive component engineered for heavy-duty construction machinery transmissions. This OEM genuine part converts hydraulic pressure into mechanical torque, directly engaging the transmission’s clutch packs to facilitate smooth gear shifts and power flow. Positioned within the valve body assembly, the motor regulates oil distribution to the clutch circuits. The SKU 4699.170.118 is precision-machined to ZF’s factory tolerances, ensuring reliable operation under extreme loads and temperatures. When paired with the 4699101090 HOUSING, this motor forms the sealed hydraulic core of the transmission control unit.

Symptoms of Failure

• Delayed or harsh gear engagement – Worn internal seals cause pressure loss, leading to sluggish shifts or sudden clunking when selecting forward or reverse.
• Intermittent transmission slipping – The motor fails to maintain consistent hydraulic pressure, resulting in power loss under load, especially on inclines.
• Hydraulic oil contamination – Degraded motor components shed metallic debris into the fluid, visible as glitter in the oil pan or on the dipstick.
• Audible whining or grinding – Bearing wear inside the motor produces high-pitched noises during operation, worsening with temperature changes.

Technical Specifications

Compatibility

This motor is designed for ZF’s WG series powershift transmissions commonly used in wheel loaders, telehandlers, and graders. It directly fits the WG180 and WG200 models, as well as the WG150 series with minor adapter modifications. The part also integrates with the 0501329881 HOUSING COVER to seal the motor cavity. For leak prevention, always replace the 0634306309 O-RING during installation. Proper ventilation is ensured by the 0637885612 BREATHER, which must be checked for blockage.

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