EMERGENCY AIRCRAFT PNEUMATIC WHEEL BRAKE VALVE MECHANISM

When the emergency system is switched in, cam rod 1, linked to this system, is shifted to the left from its middle position, contacting the rounded heads of plungers 2 and 3 and pushing the former downward and allowing the latter to be shifted upward by spring 4. This opens admission valve 2 and closes drain valve 3. Compressed air from the tank is admitted through connection 5, channel a and conn…