8-55.
Carbonized air compressor valves should
be cleaned by soaking in
1.
gasoline, followed by dressing with
emery
2.
a solution of kerosene and
mineral oil
3.
kerosene, followed by a light
brushing or scraping
4.
a strong soda solution, followed by
a stiff brushing
8-56.
When you are inserting valves in a
compressor cylinder, you should make sure
that they open in which direction?
1.
Discharge valves open toward the
center and suction valves open
away from the center of the cylinder
2.
Suction valves open toward the center
and discharge discharge valves away
from the center of the cylinder
3.
Discharge valves and suction valves
open toward the center of the
cylinder
4.
Suction valves and discharge valves
open away from the center of the
cylinder
Questions 8-57 and 8-58 are to be judged
True or False.
8-57.
One method of stopping leakage at the
threads of the valve setscrew of a high
pressure compressor is to wind a piece of
wire solder around the threads and
tighten the locknut over it.
8-59.
What material is used to repack the
filter of an air compressor control
valve?
1.
Wool or sponge
2.
Cotton or wool
3.
Linen or sponge
4.
Nylon or steel wool
8-60.
Which of the following components of a
compressed air system is vital for its
safe operation?
1.
Control valve
2.
Discharge valve
3.
Suction valve
4.
Relief valve
8-61.
What liquid should be used to fill the
sight flow indicator that provides
cylinder lubrication to a compressor
which uses 9250 Navy Symbol oil?
1.
Distilled water
2.
Mineral oil
3.
Glycerine
4.
Each of the above
Question 8-62 is to be judged True or
False.
8-62.
The sight flow indicators should be
filled with equal parts of glycerine and
mineral oil when the machinery cylinders
are lubricated with a Navy Symbol 2000
series oil.
8-58.
The manufacturer's technical manual
should contain detailed instructions
for the adjustment and maintenance of the
various control devices to the air
system components.
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