Extension of an oleo shock strut is measured to determine the
A: amount of oil in the strut.
B: physical condition of the strut itself.
C: proper operating position of the strut.
34 (8358): The rubber seals used in a landing gear shock strut
A: are generally designed to be compatible with more than one type of fluid.
B: are kept from direct contact with fluid by teflon or nylon backup rings.
C: may be used only with a specific type of fluid .
35 (8368): When an empty shock strut is filled with fluid, care should be taken to extend and compress the strut completely at least two times to
A: thoroughly lubricate the piston rod.
B: force out any excess fluid.
C: ensure proper packing ring seating and removal of air bubbles .
36 (8385): A special bolt in a landing gear attachment requires a torque value of 440 inch-pounds. How many foot-pounds are required?
A: 36.8.
B: 38
C: 36.6.
37 (8401): The purpose of the pressure regulator in a hydraulic system is to
A: maintain system operating pressure within a predetermined range and to unload the pump.
B: regulate the amount of fluid flow to the actuating cylinders within the system.
C: prevent failure of components or rupture of hydraulic lines under excessive pressure.
38 (8411): If a hydraulic brake system uses neoprene rubber packing materials, the correct hydraulic fluid to service the system is
A: mineral base oil.
B: vegetable base oil.
C: phosphate ester base oil.
39 (8428): Components containing phosphate ester-base hydraulic fluid may be cleaned with
A: Stoddard solvent .
B: Naphtha.
C: Carbon tetrachloride.
40 (8431): (1) Materials which are Skydrol compatible or resistant include most common aircraft metals and polyurethane and epoxy paints.|(2) Skydrol hydraulic fluid is compatible with nylon and natural fibers.|Regarding the above statements,
A: both No. 1 and No. 2 are true.
B: neither No. 1 nor No. 2 is true.
C: only No. 1 is true.
41 (8437): If an aircraft’s constant-pressure hydraulic system cycles more frequently than usual and no fluid leakage can be detected, the most probable cause is
A: a too high relief valve setting.
B: pump volume output too high.
C: low accumulator air preload.