ZF 4699.109.051 BRAKE PARTS | OEM Genuine Part

Overview

The ZF 4699.109.051 BRAKE PARTS assembly is a critical OEM genuine component engineered for the internal braking systems of heavy-duty construction machinery transmissions. This part functions as a friction-facing and pressure plate set, positioned within the clutch pack assembly to modulate torque transfer and enable controlled deceleration under extreme loads. Designed to withstand high thermal stress and continuous engagement cycles, the SKU 4699.109.051 ensures precise stopping force in demanding environments such as wheel loaders, dozers, and graders. When paired with the 4699101157: HOUSING and 4699201018: HOUSING, this brake set forms the core of the transmission’s hydraulic braking circuit.

Symptoms of Failure

• Delayed or erratic braking response: Worn friction material causes hesitation when engaging the service brake, leading to unsafe machine operation.
• Transmission oil contamination: Degraded brake particles mix with hydraulic fluid, turning it dark and gritty, which accelerates wear on seals and valves.
• Audible grinding or squealing during deceleration: Metal-on-metal contact from worn plates produces high-pitched noise, indicating immediate replacement is needed.
• Reduced holding power on inclines: The machine rolls backward on slopes due to insufficient clamping force from the brake pack.

Technical Specifications

Compatibility

This brake part is engineered for ZF WG180, WG200, and WG250 series transmissions commonly used in construction machinery. It directly fits models such as the ZF 4WG180, 4WG200, and 5WG250, where it replaces the original friction disc set. The part also integrates with the 4699309080: HOUSING COVER to seal the brake chamber. Always verify your transmission serial number against the OEM parts catalog before ordering.

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