I.D.K1 Flashcards
(17 cards)
- Which coupling nut should be selected for use with half inch aluminum oil lines which are to be assembled using flared tube ends and standard AN nuts, sleeves, and fittings?
AN 818-8
- Metal tubing fluid lines are sized by wall thickness and?
Outside diameter in 1/16 inch increments.
8193-1. Rolling type flaring tools are used to flare what 3 kinds of tubing?
Soft copper, aluminum, brass.
- From the following sequences of steps, indicate the proper order you would use to make a single flare on a piece of tubing.
- Slip the fitting nut and sleeve on the tube.
- Place the tube in the proper size hole in the flaring block.
- Center the plunger or flaring pin over the tube.
- Project the end of the tube slightly from the top of the flaring tool, about the thickness of a dime.
- Tighten the clamp bar securely to prevent slippage.
- Strike plunger several light blows with a lightweight hammer or mallet and turn the plunger one half turn after each blow.
- Hydraulic tubing, which is damaged in a localized area to such an extent that repair is necessary, may be repaired?
By cutting out the damaged area and utilizing a swaged tube fitting to join the tube ends.
- What is an advantage of a double flare on aluminum tubing?
More resistant to damage when the joint is tightened.
- What is the color of an AN steel flared tube fitting?
Black.
- Which of the following statements are correct in reference to flare fittings?
AN fittings have an identifying shoulder between the end of the threads and the flare cone.
- The max distance between end fittings to which a straight hose assembly is to be connected is 50 inches. The min hose length to make such a connection should be?
52.5 inches (min 5-8%).
- The material specs for a certain aircraft require that a replacement oil line be fabricated from 3/4 inch 0.072 5052-0 aluminum alloy tubing. What is the inside dimension of this tubing?
0.606 inch. (.750 - 2(.072))
- In most aircraft hydraulic systems, 2 piece tube connectors consisting of a sleeve and a nut are used when a tubing flare is required. The use of this type connector eliminates?
The possibility of reducing the flare thickness by wiping or ironing during the tightening process.
- Which of the following hose materials are compatible with phosphate ester base hydraulic fluids?
Butyl and teflon.
- Which tubings have the characteristics high strength abrasion resistance necessary for use in a high pressure (3k PSI) hydraulic system for operation of landing gear and flaps?
Corrosion resistant steel annealed or 1/4H (hard).
- When installing bonded clamps to support metal tubing?
Remove paint or anodizing from tube at clamp location.
- In a metal tubing install?
Tension is undesirable because pressurization will cause it to expand and shift.
- A gas or fluid line marked with the letters PHDAN is?
Used to carry a hazardous substance.
8215-1. Which statement is true regarding the variety of symbols utilized on the identifying color code bands that are currently used on aircraft plumbing lines?
Symbols are always black against a white background regardless of line content.
