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129 0012 Beef 03 Z

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The narrow axle uses 10-inch dual-servo drum brakes (right), while the wider axle uses 11.6-inch leading/trailing brakes. Pad surface is about 25 percent greater on the larger ones, with this additional size intended to compensate for some of the self-energizing action that is lost due to the change to the leading/trailing design. Flange sizes and bearing cups make the brake systems adaptable to either axle type. However, the drum-center holes differ in diameter.