ZF 4699.109.015 BRAKE PARTS | OEM Genuine Part

Overview

The ZF 4699.109.015 BRAKE PARTS assembly is a critical friction component engineered for the internal braking system of heavy-duty ZF powershift transmissions. This OEM genuine part, identified by SKU 4699.109.015, functions as a stationary brake piston or pressure plate within the clutch pack housing. It directly interacts with the rotating friction discs to halt output shaft rotation during directional shifts or parking brake engagement. Located between the HOUSING and the WHEEL SHAFT, this component ensures precise hydraulic clamping force is applied without distortion. As a genuine ZF part, it guarantees exact tolerances for consistent braking torque in construction machinery like wheel loaders and graders.

Symptoms of Failure

• Delayed or incomplete braking during directional shifts: When the 4699.109.015 wears, the transmission hesitates before engaging reverse or forward, often accompanied by a soft pedal feel.
• Internal hydraulic fluid bypass and overheating: A worn brake piston seal allows transmission oil to leak past the part, causing localized hot spots and discolored fluid.
• Intermittent parking brake slip on inclines: If the brake parts cannot hold static pressure, the machine rolls unexpectedly when parked on a grade.
• Metallic grinding noise from the transmission bell housing: Metal-on-metal contact occurs when the friction material on the PLANET CARRIER assembly wears through, damaging the brake disc surfaces.

Technical Specifications

Compatibility

This brake component is designed for ZF WG series powershift transmissions commonly used in construction machinery. It is a direct fit for the WG180 and WG200 series, as well as the WG150 and WG211 models. The part interfaces with the BASIC PARTS kit, which includes the necessary seals and snap rings for installation. Always verify your transmission serial number against ZF’s parts catalog, as the brake piston depth varies between the WG180 and WG200 housings.

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