ZF 4699.170.157 MOTOR | OEM Genuine Part

Overview

The ZF 4699.170.157 MOTOR is a critical hydraulic drive component engineered for demanding construction machinery transmissions. This OEM genuine part converts hydraulic pressure into rotational force, directly engaging the transmission’s internal gear sets to modulate power delivery. Positioned within the valve body assembly, the motor actuates clutch packs and shift mechanisms, ensuring precise gear engagement under heavy loads. The SKU 4699.170.157 is manufactured to ZF’s exacting tolerances, guaranteeing seamless integration with compatible transmission systems. When paired with the 4699025040 GP25 and the 4699101114 HOUSING, this motor forms the core of the hydraulic control circuit, delivering reliable performance in excavators, loaders, and graders.

Symptoms of Failure

When the ZF 4699.170.157 MOTOR begins to degrade, operators will notice distinct operational issues. Delayed or erratic gear engagement is a primary symptom, often accompanied by a grinding sensation during shifts. Hydraulic fluid leaks around the motor housing are common, leading to low system pressure and eventual transmission slippage. Another frequent failure sign is intermittent loss of power under load, where the machine struggles to maintain speed on inclines. Finally, abnormal whining or chattering noises from the transmission indicate worn internal components, such as the motor’s spool or bearings, requiring immediate inspection.

Technical Specifications

Compatibility

This motor is designed for ZF’s heavy-duty transmission families, specifically the WG180, WG200, and WG210 series. It is commonly found in construction machinery such as wheel loaders, dozers, and telehandlers. The 4699.170.157 interfaces directly with the 4699102157 INPUT shaft assembly and the 4699103114 OUTPUT flange, ensuring synchronized power transfer. For optimal performance, verify your transmission model’s serial number against ZF’s compatibility charts before installation.

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