ZF 4699.801.239 GK10LD | OEM Genuine Part

Overview

The ZF 4699.801.239 GK10LD is a precision-engineered gear kit assembly designed for the high-torque transfer case sections of heavy-duty construction machinery transmissions. This OEM genuine part serves as the primary reduction and distribution component within the planetary gear set, ensuring reliable power flow from the driveline to the final drives. The SKU 4699.801.239 is a direct replacement for worn gear clusters in ZF power shift transmissions, maintaining original gear ratios and load-bearing tolerances. When installed alongside the 4699001237: GK10LD and the 4699101108: HOUSING, this part restores the precise meshing required for smooth gear engagement under heavy loads.

Symptoms of Failure

• Intermittent gear slipping under load: When the 4699.801.239 gear teeth wear unevenly, operators will notice a sudden loss of torque during uphill grading or digging cycles, often accompanied by a high-pitched whine.
• Metallic debris in transmission oil: Flaking or pitting on the gear flanks generates fine steel particles that contaminate the hydraulic circuit, causing sluggish shifting and increased operating temperatures.
• Oil leaks at the housing interface: Excessive gear play can distort the 4699102172: INPUT shaft seal surface, leading to visible drips around the bell housing after extended operation.
• Vibration during deceleration: Worn gear profiles create harmonic vibrations that resonate through the 4699103057: OUTPUT shaft, felt as a distinct shudder in the operator cab when coasting.

Technical Specifications

Compatibility

This GK10LD gear kit is engineered for integration into ZF WG180, WG200, and WG210 series power shift transmissions commonly used in wheel loaders, excavators, and telescopic handlers. It directly replaces the original gear cluster in the countershaft assembly of these models. For proper installation, always pair this part with a new 0634306309: O-RING and inspect the 0630513065: SNAP RING for wear. The 4699.801.239 is not backward-compatible with older ZF 4WG-65 series without modification to the 0501329881: HOUSING COVER.

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