ZF 4699.005.009 GK30 | OEM Genuine Part

Overview

The ZF 4699.005.009 GK30 is a genuine OEM gearset component engineered specifically for the hydraulic clutch and planetary gear assemblies found in heavy-duty construction machinery transmissions. This part, identified by SKU 4699.005.009, functions as a critical torque-transfer element within the main drive shaft cluster. It is responsible for maintaining precise gear engagement under high load conditions, directly influencing the operational efficiency of wheel loaders, dozers, and graders. The GK30 designation indicates a specific ratio and spline configuration designed to match ZF’s original factory tolerances.

Symptoms of Failure

When the ZF 4699.005.009 GK30 begins to wear, operators typically notice hard shifting between forward and reverse gears, often accompanied by a grinding noise during engagement. Another common failure symptom is intermittent power loss under load, where the machine hesitates or stalls when pushing heavy material. You may also observe metallic debris in the transmission oil filter, a clear indicator that the gearset teeth are spalling. Finally, erratic clutch pack engagement can occur, leading to jerky starts and reduced operator control.

Technical Specifications

Compatibility

This genuine ZF GK30 gearset is designed for integration into the WG180, WG200, and WG210 series transmissions. It also fits select variants of the Ergopower and Ecomix drivelines used in concrete mixers and material handlers. Always verify the serial number of your transmission housing before installation, as the GK30 is often paired with specific clutch drum assemblies.

During a rebuild, this gearset is commonly installed alongside the 4699101044 HOUSING and the 4699301111 HOUSING to ensure proper alignment of the planetary carrier. The 4699301054 HOUSING COVER and 4699301055 COVER must also be inspected for wear, as they seal the gearset chamber against contamination.

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