8-20.
Which of the following operations
is NOT part of a scraper cycle
time?
8-21.
8-22.
8-23.
8-24.
8-25.
1.
Loading
2.
Hauling
3.
Refueling
4.
Unloading
Scrapers on the haul road should
only travel in the highest gear
that is safe for the road.
1.
True
2.
False
Which of the following actions
should an operator perform if a
scraper begins to fall off a fill?
1.
Steer downhill
2.
Drop the bowl
3.
Rapidly accelerate
4.
All of the above
Learning Objective:
Recognize
the principles and components of
dozers, tracks, and track frame.
Dozers are usually rated by size
and what other item?
1.
Engine size
2.
Power
3. Track length
4.
Blade width
Dozer drawbar pull is greatest
in the highest transmission gear
range.
1.
True
2.
False
What is the varying ground bearing
pressure range for track equipment?
1.
1 to
4 psi
2.
6 to
9 psi
3.
10 to 15 psi
4.
18 to 20 psi
8-26.
What action should an operator
perform when operating a dozer
in water deep enough to reach the
radiator?
1.
Tape off the air cleaner
2.
Tape off the exhaust stack
3.
Disconnect the fan belt
4.
Disconnect the batteries
8-27.
What component of the dozer
contacts the track pin bushings
and propels the dozer along the
track assembly?
1.
Drive sprocket teeth
2.
Front idler
3.
Carrier rollers
4.
Track rollers
8-28.
What components, as they wear,
will cause the track assembly to
lengthen?
1.
Grouser shoes and pins
2.
Sprocket teeth and bushings
3.
Pins and bushings
4.
Recoil spring and front idler
8–29.
What term is used to describe the
most common dozer track shoe?
1.
Grouser
2.
Cleat
3.
Spikes
4.
Pads
8-30.
What component keeps the track
chain in alignment between the
drive sprocket and the front idler?
1.
Track rollers
2.
Lift sheaves
3.
Support bearings
4.
Carrier rollers
8-31.
What component serves as a guiding
support for the track chain?
1.
Recoil spring
2.
Front idler
3.
Pitch arm
4.
Trunnion roller
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