The Bendix 974686N brake chamber is an S-cam air brake chamber listed as TYP-30. In a chamber of this kind, air pressure moves a flexible diaphragm that drives the pushrod against the slack adjuster to apply the brake, and a return spring brings everything back when the air is released. A leaking diaphragm lets air escape and weakens that brake, and a ruptured one leaves it ineffective. As linings wear and slack builds, a chamber that runs out of travel cuts braking effort and lengthens brake lag. A genuine Bendix part from Pro Gear and Transmission. Call us to confirm proper fit for your application.
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Features
Bendix S-cam air brake chamber, TYP-30
Diaphragm and pushrod apply the brake through the slack adjuster
Return spring releases the pushrod when air is exhausted
A leaking diaphragm or excess slack reduces braking effort
Genuine Bendix part
