ZF 4699.170.236 MOTOR | OEM Genuine Part

Overview

The ZF 4699.170.236 MOTOR is a critical hydraulic drive component engineered for use in heavy-duty construction machinery transmissions. This OEM genuine part functions as the primary power input unit, converting hydraulic pressure into rotational torque to engage the transmission’s planetary gear sets. Positioned within the valve body assembly, the motor regulates oil flow to clutch packs and shift actuators. The SKU 4699.170.236 is precision-machined to ZF’s factory tolerances, ensuring seamless integration with the transmission’s control system. When paired with the 4699035003 GP35 gear pump, it delivers consistent pressure for smooth gear engagement in loaders, excavators, and graders.

Symptoms of Failure

• Erratic shifting or delayed engagement: A worn motor fails to build adequate hydraulic pressure, causing hesitation when shifting from neutral to drive or reverse.
• Oil contamination in the transmission sump: Internal seal degradation allows metal debris from the motor to circulate, leading to premature wear of the 4699101159 HOUSING and valve body.
• Audible whining or grinding noise: Bearing failure within the motor produces a high-pitched sound during acceleration, often mistaken for gear slipping.
• Reduced machine travel speed: Insufficient torque output from the motor causes the transmission to operate below rated RPM, especially under load.

Technical Specifications

Compatibility

This motor is engineered for ZF’s WG-series powershift transmissions commonly used in construction machinery. It directly fits the WG180, WG200, and WG250 models. The part also integrates with the 4699102188 INPUT shaft assembly and the 4699103126 OUTPUT flange. For complete drivetrain restoration, verify compatibility with your specific transmission serial number.

Related Components