ZF 4699.801.106 GK10 | OEM Genuine Part

Overview

The ZF 4699.801.106 GK10 is a critical OEM genuine gearset assembly designed for heavy-duty construction machinery transmissions. This component functions as the primary reduction gear cluster within the transmission housing, converting high-speed input torque into usable low-speed, high-torque output for demanding off-road applications. The SKU 4699.801.106 is engineered to exact ZF tolerances, ensuring precise meshing with adjacent shafts and bearings. It sits directly within the main transmission casing, typically between the input shaft and the differential or final drive assembly, making it a core element of the powertrain’s load-bearing architecture.

Symptoms of Failure

When the ZF 4699.801.106 GK10 begins to wear, operators often notice distinct operational issues. Gear whining or howling under load is a primary indicator, especially during acceleration or deceleration in construction machinery like wheel loaders and excavators. Another common symptom is intermittent gear slipping or jumping out of gear during heavy digging or pushing operations. You may also detect metallic debris in the transmission oil filter or magnetic drain plug, signaling advanced wear on the gear teeth. Finally, vibration through the chassis or driveline at specific RPM ranges often points to uneven tooth wear or pitting on this gearset.

Technical Specifications

Compatibility

This GK10 gearset is primarily compatible with ZF WG series transmissions used in construction machinery. It is a direct fit for the ZF WG180 and ZF WG200 transmission models, commonly found in loaders, graders, and dump trucks. It also serves the ZF WG150 and ZF WG120 series in certain configurations, though verification of the input shaft spline count is recommended. For proper installation, this gearset must be paired with the correct 4699101090 HOUSING to ensure correct alignment and oil flow. The assembly is sealed by the 0634306309 O-RING and protected by the 0637885612 BREATHER, while the 0501329881 HOUSING COVER provides structural integrity to the gear chamber.

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