ASSIGNMENT 7
Textbook Assignment:
“Front-End Loaders, Excavators, and Ditchers” and “Graders and
Scrapers,” pages 9-11 through 10–19.
Learning Objective:
(continued)
Recognize the principles of loader
operations.
7-1.
Which of the following loader
operational techniques provides
greater force and penetration to
loosen large rocks?
1.
Squeezing the tip of the
rocks with the clamshell
2.
Digging under the rocks
with the bucket
3.
Dozing under the rocks
with the blade
4.
Back dragging the rocks
with the clamshell
7-2.
What action should a loader
operator take when loading large
rocks into dump trucks?
1.
Drop small rocks in the dump
bed to cushion the large rocks
2.
Gently load the large rocks
from the lowest possible height
3.
Place a load of dirt or sand in
the dump bed to cushion the
large rocks
4.
Load in the center of the dump
bed with the clamshell
7–3.
Improper loading techniques with
a multipurpose bucket can cause
unnecessary damage to the bucket.
1.
True
2.
False
Learning Objective:
Recognize the
principles of backhoe operations.
7-4.
The digging depth of a backhoe
attachment is limited by what
components?
1.
Bucket size and length of
dipper stick
2.
Length of boom and dipper stick
3.
Bucket size and length of boom
4.
Backhoe coupling and positive
hydraulic pressure
7-5.
What type of fitting allows the
easy attachment of the backhoe
to the loader?
1.
Quick disconnect hydraulic
fittings
2.
Manual connect hydraulic
fittings
3.
Forced driven hydraulic
fittings
4.
Screw pin hydraulic fittings
7–6.
After the backhoe is attached to
the 515 dresser loader, the
operator should raise the boom arm
until the boom arm pivot point is
approximately how many inches from
the ground?
1.
6
2.
15
3.
20
4.
36
7–7.
Which of the following problems
results from setting the engine
throttle in excess of that set
for backhoe operations?
1.
Creates excessive engine
temperatures
2. Creates excessive digging
pressure
3.
Creates excessive hydraulic
temperatures
4.
Creates excessive boom swing
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