IN ANSWERING QUESTION 9-23, REFER TO
FIGURE 8-8 IN THE TEXTBOOK.
9-23.
The poppets of a poppet-type
selector valve are actuated by what
means?
The
The
The
The
solenoid
poppet spring
return fluid pressure
cams on the camshaft
9-24.
To prevent overrunning, all poppet-
type selector valves are provided
with what integral device?
A stop
A striker plate
An electrical cutoff
A hydraulic limiting switch
9-25.
When all four of the poppets of a
poppet-type selector valve are held
firmly seated by the springs and
there is no fluid flow, the valve
is in what position?
The return position
The working position
The neutral position
The pressure position
9-26.
Malfunctioning selector valves are
usually the result of which of the
following problems?
Improper installation
Damaged parts only
Foreign particles only
Damaged parts and foreign
particles
9-27.
External leakage from a poppet-type
selector valve could be caused by
which of the following conditions?
1.
A damaged O-ring packing on the
poppet
2.
A damaged gasket under the
sealing plug
3.
A damaged center packing on the
camshaft
4.
A damaged bottom gasket on the
poppet seat
9-28.
Currently, what type of selector
valve is the most durable and
trouble-free?
The slide-type
The poppet-type
The shuttle-type
The solenoid-type
IN ANSWERING QUESTION 9-29, REFER TO
FIGURE 8-10 IN THE TEXTBOOK.
9-29.
The O-rings form a seal between the
sleeve and the body creating what
total number of chambers around the
sleeve?
Nine
Two
Five
Four
9-30.
The slide-type selector valve has
raised, machined portions that are
known by which of the following
terms?
1.
Stops
2.
Lands
3.
Lobes
4.
Retainers
9-31.
A slide-type selector valve has
three grooves at the end next to
the eye.
The grooves are known by
which of the following terms?
Lines
Lands
Rings
Detents
9-32.
A slide-type selector valve should
have a light film of hydraulic
fluid applied to the exposed areas
of the slide primarily for what
purpose?
1.
To prevent corrosion
2.
To lubricate the slide
3.
To prevent external leakage
4.
To prevent the entry of foreign
matter
9-33.
A solenoid-operated selector valve
is controlled by what means?
1.
Electrically
2.
Mechanically
3.
Hydraulically
4.
Pneumatically
9-34.
A solenoid-operated selector valve
directs the flow of fluid to and
from the actuator by the use of
what component?
1.
The plunger
2.
The pilot slide
3.
The selector slide
4.
The lever assembly
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