ZF 4699.170.139 MOTOR | OEM Genuine Part

Overview

The ZF 4699.170.139 MOTOR is a critical hydraulic drive component designed for integration within ZF’s heavy-duty transmission assemblies used in construction machinery. This OEM genuine part converts hydraulic pressure into rotational torque, directly engaging the gear train to control machine movement. Positioned between the pump and the planetary gear set, the SKU 4699.170.139 ensures precise power delivery for demanding applications such as wheel loaders and excavators. When paired with a robust 4699101095: HOUSING, this motor maintains structural integrity under high cyclic loads.

Symptoms of Failure

• Intermittent drive loss during heavy loads – A worn motor often fails to maintain consistent torque, causing the transmission to slip or hesitate when digging or lifting.
• Hydraulic fluid contamination from internal wear – Degraded seals and bearings allow metal particles to enter the oil, leading to accelerated damage across the system.
• Excessive noise or vibration at low RPM – Grinding or whining sounds indicate bearing fatigue or misalignment within the motor assembly.
• Slow or unresponsive gear engagement – Reduced hydraulic flow through a failing motor delays clutch pack activation, creating lag in forward/reverse shifts.

Technical Specifications

Compatibility

This motor is engineered for ZF’s WG series transmissions, specifically the WG180, WG200, and WG210 models commonly deployed in telescopic handlers and crawler dozers. It also integrates with the 4WG-200 and 5WG-210 variants. For full assembly restoration, consider the 4699001176: GK10 gear kit, which works in tandem with the motor to distribute torque. The 4699102158: INPUT shaft and 4699103063: OUTPUT flange must be inspected for wear when replacing the motor.

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