ZF 4699.801.242 GK10LD | OEM Genuine Part

Overview

The ZF 4699.801.242 GK10LD is a precision-engineered OEM genuine gear kit designed for the transfer case and auxiliary drive assemblies within heavy-duty construction machinery transmissions. This SKU, 4699.801.242, functions as the primary reduction gear set, managing torque distribution between the input shaft and the output shaft in ZF drivelines. It is a critical component for maintaining correct gear mesh and load-bearing capacity under extreme operating conditions. For optimal assembly integrity, this gear kit is often installed alongside the 4699101139: HOUSING and the 4699103058: OUTPUT shaft to ensure concentric alignment and minimal backlash.

Symptoms of Failure

• Intermittent gear slipping under load: When the 4699.801.242 gear teeth wear unevenly, operators will notice a sudden loss of drive torque when climbing grades or moving heavy loads, often accompanied by a grinding noise.
• Metallic debris in transmission oil: A clear sign of spalling or pitting on the GK10LD gear set is the presence of silver or bronze-colored particles in the fluid during routine drain intervals.
• Constant high-pitched whine from the transfer case: Worn gear profiles create a distinct, cyclical whining sound that increases with vehicle speed, indicating the need for immediate replacement of the 4699001242: GK10LD assembly.
• Oil leaks near the drive flange: Excessive vibration from a failing gear set can compromise the seal between the 4699102172: INPUT shaft and the housing, leading to visible fluid seepage.

Technical Specifications

Compatibility

This genuine ZF gear kit is engineered for the WG180, WG200, and WG250 series power shift transmissions commonly found in wheel loaders, excavators, and graders. It is specifically designed for the auxiliary drive section where the 4699103058: OUTPUT shaft interfaces with the final drive. The 4699.801.242 is also compatible with certain iterations of the ZF 4WG-200 and 6WG-200 models used in heavy construction machinery from 2005 onward.

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