ZF 5838.300.382 BRAKE LINE | OEM Genuine Part

Overview

The ZF 5838.300.382 BRAKE LINE is a critical hydraulic conduit within the final drive assembly of heavy-duty construction machinery. This OEM genuine part routes pressurized transmission fluid to the service brake mechanism, ensuring consistent clamping force during deceleration. Positioned between the axle housing and the brake actuator, the SKU 5838.300.382 directly influences stopping power and system responsiveness. When this line is compromised, the entire braking circuit loses integrity, leading to performance degradation in loaders, graders, and dump trucks operating under extreme torque conditions.

Symptoms of Failure

• External hydraulic fluid seepage at axle connection points – A worn brake line often develops micro-fractures near the crimped fittings, causing slow oil loss that stains the REAR AXLE housing. This is a common long-tail search query for “ZF brake line fluid leak symptoms.”
• Spongy or delayed brake pedal response – Air ingress through a cracked line reduces hydraulic pressure, resulting in a soft pedal feel and increased stopping distance during heavy loads.
• Uneven brake application causing driveline vibration – A collapsed internal lining restricts fluid flow to one wheel, creating asymmetric braking that manifests as shuddering through the DIFFERENTIAL assembly.
• Overheating of the brake drum or disc – Partial blockage from debris or corrosion prevents full release of the brake pads, generating excessive heat that can warp components.

Technical Specifications

Compatibility

This brake line is engineered for ZF’s heavy-duty powershift transmission series, specifically the WG180, WG200, and WG250 models used in construction equipment. It interfaces directly with the DIFFERENTIAL HOUSING and the wheel-end brake assembly. The part also integrates with the TAPER ROLLER BEARING support structure within the final drive. For optimal sealing, always replace the associated copper washers and inspect the SPRING PIN alignment during installation.

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