Air Brakes and Train Handling Rules - Alaska Railroad

66 Locomotive Equipment and ComponentsEMERGENCY. Vents brake pipe pressure directly to the atmosphere,causing brakes to apply at an emergency rate.66.1.2 SA26 Independent Brake ValveHandle Positions1.2.3.ReleaseApplication ZoneFull Application12 3Figure 66-B. SA26 Independent Brake Valve.The SA26 independent brake valve controls locomotive brakecylinder pressure independent of the automatic brake system. Handlepositions include:RELEASE. Normal position to release the locomotive brakes.APPLICATION ZONE. Zone between RELEASE and FULLAPPLICATION. Increases or decreases locomotive brake cylinderpressure as follows:1. Increase by moving the brake handle to the right.2. Decrease by moving the brake handle to the left.June 1, 1996 ARRC Air Brakes and Train Handling Manual 66-3