Airbrake7 Flashcards
- Emergency application can be obtained whenever:
Brake pipe pressure is above 50 psi
- The cut out cock for the control valve is open when the handle is:
crosswise
- Emergency application once started is transmitted rapidly through a train by:
Opening VENT valves in each car
- The A-1 reduction relay valve will vent brake pipe pressure locally during:
service & emergency application
- The primary function of the retaining valve is to:
Control the release of brake cylinder pressure
- Three portions of a 26C control valve are:
Pipe bracket, service portion, emergency portion
- Purpose of the auxiliary reservoir charging check valve is to:
Allow charging from brake pipe to main reservoir if main reservoir supply is not available
- When a passenger car equipped with 26C brake is fully charged to 110 psi, equalization will occur with a brake pipe reduction of:
Passenger cars do not equalize
- The primary function of the decelostat is to:
Control sliding of the wheels
- If the main reservoir supply is damaged, what corrective action must be taken?
Cut out main reservoir cock ahead of damaged car
- How many emergency valves are there on high level cars?
3
- What connects brake pipe to control valve?
Branch pipe cut out cock
- How many truck cut out cocks are there on each Amfleet car?
2
- What is the purpose of the main reservoir?
Store compressed air
- If you have overriding buffer plates, what are the restrictions?
15 mph, 5 mph through turnouts/crossovers
- What action must be taken if a car has under inflated air bellows?
Note it on MAP 21C
- What cars don’t use main reservoir supply pipes?
Heritage
- What speed is allowed with a defective bolster anchor radius rod?
Must not exceed 30 mph
- What is the normal position of the retaining valve?
Down in direct release, EX position
- What are the restrictions on cars with over inflated air bellows?
30 mph, 15 mph through turnouts/crossovers
- If the main reservoir tank is damaged, what action must be taken?
Cut out main reservoir cock ahead of damaged car, cut out control valve (branch pipe cut out cock) and cut out brake cylinders on each truck
- Where does air exhaust on passenger cars?
Relay valve
- With passenger equipment, where does air come from during an emergency application?
Main reservoir
- If brake pipe is damaged beyond repair on a passenger car, what must be done?
Cut out brakes by cutting out control valves on each truck
