ZF 4699.801.186 GK10LD | OEM Genuine Part

Overview

The ZF 4699.801.186 GK10LD is a precision-engineered OEM genuine part designed for the planetary gear set assembly within heavy-duty construction machinery transmissions. This component functions as a critical load-bearing element, managing torque distribution and rotational stability between the input shaft and the final drive output. Specifically, the SKU 4699.801.186 sits within the intermediate gear cluster of ZF’s GK10LD series, ensuring synchronized power transfer under extreme operational stresses. Its construction from case-hardened alloy steel guarantees resistance to pitting and deformation in high-cycle applications such as excavators and wheel loaders.

Symptoms of Failure

• Intermittent gear slipping under load — When the 4699.801.186 wears, operators may notice sudden loss of drive torque during digging or lifting operations, often accompanied by a grinding noise from the transmission housing.
• Metallic debris in transmission oil — Flaking or spalling of the gear teeth generates fine steel particles that contaminate the hydraulic fluid, visible during routine oil changes or filter inspections.
• Vibration during low-speed maneuvering — Worn gear profiles cause uneven meshing, producing noticeable chassis vibration at idle or creep speeds, particularly in reverse gear operation.
• Oil seepage from the output seal area — Excessive play in the gear assembly can distort the adjacent housing, leading to gradual hydraulic fluid leakage around the OUTPUT shaft seal.

Technical Specifications

Compatibility

This genuine ZF part is engineered for the GK10LD planetary gearbox family, which is predominantly used in ZF WG180, WG200, and WG210 transmission models. It is directly compatible with the 4699001185: GK10LD main assembly and interfaces with the HOUSING and INPUT shaft components. The 4699.801.186 is also found in certain ZF 4WG-200 and 5WG-300 series transmissions used in telescopic handlers and mobile cranes. Always verify the transmission serial number before installation.

Related Components