9-35.
A solenoid-operated selector valve
controls bleed pressure by the use
of what component?
1.
The sleeve
2.
The plunger
3.
The solenoid
4.
The position lock
9-36.
For the proper cleaning,
inspection, repair, and testing of
selector valves, you should use
what series of NAVAIR manuals as a
guide?
01 series
02 series
03 series
04 series
9-37.
When testing a solenoid selector
valve, you must bleed all air from
the valve before applying pressure
for which of the following reasons?
1.
To prevent premature operation
of the solenoids
2.
To ensure proper lubrication of
the parts
3.
To ensure proper seating of the
O-rings
4.
To prevent a leak from going
undetected
9-38.
The purpose of a check valve is to
allow the fluid to flow in one
direction only.
True
False
9-39.
What is indicated by the arrow on
the body of an automatic check
valve?
1.
The direction of restricted
flow
2.
The direction of reversed flow
3.
The direction of checked flow
4.
The direction of free flow
9-40.
A bypass check valve differs from
an automatic check valve in which
of the following ways?
1.
It can be manually closed to
completely stop the flow of
fluid in both directions
2.
It can be manually opened to
allow fluid to flow in both
directions
3.
It is automatically opened to
allow fluid to flow in both
directions
4.
It is automatically opened to
allow restricted flow in both
directions
9-41.
What is the most common cause for
internal leakage of a check valve?
A broken spring in the valve
Foreign matter in the valve
Vibrations in the system
Water in the system
9-42.
Sequence valves may be operated in
which of the following ways?
1.
By pressure only
2.
By pressure or mechanically
only
3.
By pressure, mechanically, or
electrically only
4.
By pressure, mechanically,
electrically, or pneumatically
9-43.
What are the two types of
mechanically operated sequence
valves?
Equal and unequal
Loaded and unloaded
Manual and automatic
Balanced and unbalanced
9-44.
Trouble associated with a
mechanically operated sequence
valve is most commonly a result of
what problem?
1.
Foreign matter
2.
Weak valve springs
3.
Faulty O-ring seals
4.
Improper adjustment
9-45.
A priority valve is operated by
what means?
1.
Manually
2.
Electrically
3.
Pneumatically
4.
Automatically
9-46.
Isolation of the normal system from
the emergency hydraulic system is
the main function of what valve?
The shuttle valve
The control valve
The priority valve
The isolation valve
9-47.
Excessive heating of a shuttle
valve is a good indication of what
type of problem?
Internal leakage
External leakage
Improper adjustment
Broken mechanical linkage
46
