ZF 0501.224.449 BRAKE CYLINDER

Overview

The ZF 0501.224.449 BRAKE CYLINDER is a critical hydraulic actuation component engineered for heavy-duty construction machinery transmissions. Positioned within the brake valve assembly of ZF powershift drivelines, this OEM genuine part converts hydraulic pressure into mechanical force to engage the service brake system. The SKU 0501.224.449 ensures precise fitment and reliable stopping power under extreme loads, directly interfacing with the axle housing to modulate braking torque. This cylinder works in concert with the 2098109042 DIFFERENTIAL and 2098309011 CROWN WHEEL to maintain driveline integrity during high-cycle operations.

Symptoms of Failure

• Hydraulic fluid seepage around the brake cylinder seal: Visible oil leaks near the axle housing indicate worn piston seals, leading to pressure loss and reduced braking force.
• Spongy or delayed brake pedal response: Internal bypassing of hydraulic fluid causes inconsistent engagement, often described as a “soft pedal” in loader or dozer applications.
• Gradual gear slipping during deceleration: Insufficient clamping pressure from a failing cylinder allows the 2099209001 DIFFERENTIAL to rotate freely, resulting in unintended transmission creep.
• Uneven brake wear on one side: A seized or sticking cylinder piston forces the 2098309010 DIFFERENTIAL HOUSING to absorb asymmetric loads, accelerating component fatigue.

Technical Specifications

Compatibility

This brake cylinder is designed for ZF powershift transmissions commonly found in construction machinery. It directly fits the following models:

• ZF WG180 series (WG180, WG180/II)
• ZF WG200 series (WG200, WG200/II)
• ZF 4WG-200 series
• ZF 6WG-200 series

Always verify your transmission serial number before installation. The cylinder interfaces with the 2098309009 DIFFERENTIAL HOUSING and 2098309031 AXLE BEVEL GEAR for proper alignment.

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