ZF 0501.329.809 BRAKE | OEM Genuine Part

Overview

The ZF 0501.329.809 BRAKE is a critical OEM genuine component designed for high-stress applications within ZF construction machinery transmissions. This part functions as the primary holding brake, ensuring that the output shaft remains stationary when the vehicle is parked or during specific operational pauses. Located within the transmission housing assembly, the brake engages hydraulically or mechanically to prevent unintended movement, directly impacting safety and load control. The SKU 0501.329.809 is engineered to exact ZF tolerances, providing reliable clamping force and heat dissipation under heavy loads. When paired with a robust HOUSING assembly, this brake unit maintains structural integrity even in dusty or wet job site conditions.

Symptoms of Failure

• Transmission creep when parked: If the ZF 0501.329.809 brake fails to hold, the machine may roll on inclines, indicating worn friction surfaces or internal seal degradation.
• Oil leaks near the brake housing: Damaged seals or a cracked HOUSING COVER can allow transmission fluid to escape, leading to low pressure and brake slip.
• Delayed engagement or dragging: Worn brake plates cause sluggish response when shifting from park to drive, often accompanied by a grinding noise or excessive heat.
• Reduced braking force under load: Operators may notice the machine requires longer stopping distances, a sign that the brake assembly is losing clamping capacity.

Technical Specifications

Compatibility

This brake is engineered for ZF heavy-duty powershift transmissions commonly used in wheel loaders, excavators, and telehandlers. Based on its design and part number range, the 0501.329.809 is compatible with the following ZF transmission models: WG180, WG200, WG210, and WG250. It also fits select variants of the 4WG-200 series. For proper installation, ensure the mating HOUSING is free of wear and that all fasteners, including the TORX SCREW, are torqued to factory specifications.

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