ZF 4699.170.204 MOTOR | OEM Genuine Part

Overview

The ZF 4699.170.204 MOTOR is a critical hydraulic actuation component within ZF construction machinery transmissions. This OEM genuine part converts hydraulic pressure into precise mechanical motion to engage clutch packs and shift gears. Positioned within the valve body assembly, the motor directly controls oil flow to specific transmission circuits. The SKU 4699.170.204 is engineered to exact ZF tolerances, ensuring reliable power transfer in heavy-duty loaders, graders, and dozers. When paired with a properly sealed 4699101105: HOUSING, this motor maintains consistent hydraulic pressure for smooth gear engagement.

Symptoms of Failure

• Delayed or harsh shifting: A worn motor fails to modulate hydraulic pressure, causing abrupt gear changes or hesitation when accelerating under load.
• Transmission overheating: Internal leakage past the motor spool generates excess heat, often accompanied by burnt transmission fluid odor.
• Intermittent loss of drive: The motor may stick in a neutral position, causing the machine to lose forward or reverse motion without warning.
• Hydraulic fluid contamination: Debris from a failing motor can migrate into the 0634306309: O-RING seals, leading to external leaks at the housing interface.

Technical Specifications

Compatibility

This motor is designed for ZF WG180, WG200, and WG250 series powershift transmissions commonly used in construction machinery. It also fits select ERGO and ECOMIX drivelines. The 4699.170.204 replaces earlier variants in transmissions requiring a 4-way hydraulic valve interface. Always verify the 0501329881: HOUSING COVER condition during installation, as warped covers can misalign the motor bore. For optimal sealing, replace the 0637885612: BREATHER to prevent moisture ingress into the transmission housing.

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