ZF 4699.805.022 GK30 | OEM Genuine Part

Overview

The ZF 4699.805.022 GK30 is a precision-engineered OEM genuine part designed for the hydraulic control system within ZF construction machinery transmissions. This component functions as a critical valve or actuator element, managing oil flow and pressure to ensure smooth gear engagement and clutch modulation. It sits directly within the transmission valve body assembly, where it regulates hydraulic signals to the clutch packs. The SKU 4699.805.022 is manufactured to ZF’s exacting tolerances, guaranteeing reliable performance in demanding off-highway applications. When paired with the 4699101018 HOUSING and the 4699301051 HOUSING, this part forms a sealed hydraulic circuit essential for precise transmission control.

Symptoms of Failure

• Erratic gear engagement or delayed shifting: When the 4699.805.022 wears internally, hydraulic pressure drops, causing hesitation or harsh shifts during acceleration.
• Internal hydraulic leaks: Worn sealing surfaces allow oil to bypass, leading to low system pressure and eventual transmission overheating.
• Intermittent clutch slip under load: A failing GK30 unit cannot maintain steady pressure, resulting in momentary power loss when climbing or hauling heavy loads.
• Contaminated oil or metallic debris: Internal wear particles from this part often appear in the transmission fluid, indicating imminent failure of the valve assembly.

Technical Specifications

Compatibility

This OEM genuine part is engineered for ZF’s heavy-duty powershift transmission series commonly used in construction machinery. It is directly compatible with the following ZF models: WG180, WG200, WG210, and WG220. These transmissions are found in wheel loaders, telehandlers, and graders from manufacturers such as Caterpillar, Volvo, and JCB. For proper installation, ensure the 4699301054 HOUSING COVER and the 4699301055 COVER are inspected for wear, as they seal the valve chamber containing the 4699.805.022.

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