ZF 4699.170.056 MOTOR | OEM Genuine Part

Overview

The ZF 4699.170.056 MOTOR is a critical hydraulic actuation component engineered for use within ZF’s heavy-duty powershift transmission assemblies. This OEM genuine part converts hydraulic pressure into precise mechanical motion, engaging clutch packs and modulating gear shifts in construction machinery such as wheel loaders, graders, and telehandlers. The SKU 4699.170.056 sits directly within the valve body housing, where it interfaces with the main control spools to direct oil flow. When paired with a robust 4699101049 HOUSING, this motor ensures consistent shift timing under extreme load cycles. Its sealed design prevents contamination ingress, making it indispensable for maintaining transmission integrity in demanding job site environments.

Symptoms of Failure

When the ZF 4699.170.056 MOTOR begins to degrade, operators will notice distinct performance issues. Delayed or harsh gear engagement is the most common complaint, often accompanied by a momentary loss of drive power when shifting between forward and reverse. Intermittent transmission slippage under load occurs as the motor fails to maintain adequate clutch pressure, particularly during uphill travel or heavy bucket lifts. External hydraulic fluid seepage around the motor housing indicates worn internal seals, leaving oily residue on the bell housing. Finally, erratic shift patterns or failure to shift out of neutral can develop, often traced back to a seized motor piston. These symptoms directly impact productivity and should prompt immediate inspection of the 4699.170.056 unit.

Technical Specifications

Compatibility

This motor is designed for integration into ZF’s WG series powershift transmissions, specifically the WG180, WG200, and WG210 models commonly found in construction machinery. It also fits select ErgoPower and Ecomat series transmissions used in mid-size loaders and excavators. The 4699.170.056 replaces the earlier 4699.170.055 variant and is backward compatible with housings like the 4699301188 HOUSING. For proper sealing during installation, always pair this motor with a new 0636015047 HEXAGON SCREW and the corresponding 4699301128 COVER to prevent fluid loss.

Related Components