ZF 4699.109.055 BRAKE | OEM Genuine Part

Overview

The ZF 4699.109.055 BRAKE is a critical OEM genuine component designed to provide controlled deceleration and secure holding within ZF heavy-duty transmission assemblies. This brake unit functions as a dynamic braking system, engaging directly with the planetary gear sets to manage torque flow and prevent unintended rotation when the machine is stationary. Primarily deployed in construction machinery, the SKU 4699.109.055 ensures precise stopping power under high-load conditions. It is mounted internally within the transmission housing, working in concert with the 4699101095: HOUSING to maintain structural integrity and alignment of the rotating elements.

Symptoms of Failure

• Delayed engagement or brake drag: When the 4699.109.055 wears, operators often report a noticeable lag in stopping response or a constant dragging sensation during operation, leading to overheating.
• Erratic gear holding on inclines: A failing brake allows the vehicle to creep or roll unexpectedly on slopes, a dangerous condition that signals internal friction material degradation.
• Contaminated transmission fluid with metallic debris: Worn brake plates shed fine metal particles into the oil, which can be detected during routine fluid analysis or by visible sludge in the sump.
• Unusual grinding or whining noises during braking: Audible sounds from the transmission area, particularly when applying the brake, indicate scoring or uneven wear on the brake disc surfaces.

Technical Specifications

Compatibility

This OEM genuine brake is engineered for integration into ZF’s heavy-duty powershift transmission series commonly found in construction machinery. It is directly compatible with the WG180 and WG200 transmission models, as well as the WG210 series used in wheel loaders and telehandlers. The part also fits select ERGO series transmissions where a compact brake pack is required. For proper sealing, always pair this brake with a new 0634306309: O-RING and ensure the 0501329881: HOUSING COVER is free from cracks. Additionally, verify the 0637885612: BREATHER is unobstructed to prevent pressure buildup that could affect brake actuation.

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