LESSON
PRACTICE EXERCISE
The following items will test your grasp of the material covered in this
lesson. There is only one correct answer for each item. When you have
completed the exercise, check your answers with the answer key that
follows. If you answer any item incorrectly, study again that part of
the lesson which contains the portion involved.
1.
In the event of a hydraulic power loss, which of the following
valves prevents the upper rear door from closing?
A.
Pilot check.
B.
Flow control.
C.
Directional control.
D.
Reverse free flow check.
2.
In the event of a hydraulic power loss, which of the following
prevents the stacker system projectile tray from falling?
A.
Hydraulic brake.
B.
Pilot check valve.
C.
Directional control valve.
D.
Reverse free flow check valve.
3.
Which of the following
indicates
the
maximum
hydraulic
system
pressure (psi)?
A.
1000.
B.
1250.
C.
1500.
D.
1550.
4.
In which of the following positions must you position the backup
hydraulic circuit dump valve for the backup pump and hydraulic
circuits to function?
A.
Mid.
B.
Open.
C.
Closed.
D.
1/2 turn counterclockwise.
71
OD1703
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