CDC 3E251 - VOLUME 2 EXAM WITH QUESTIONS AND
ANSWERS
If you choose to spread materials in layers, you should stop the truck where you
want to start the spread, position the dump control levers, and - ANSWER Raise
the bed enough to break the material free
When properly equipped, a front-end loader can perform tasks associated with each
operation task EXCEPT - ANSWER Trailer operations
What defect are you looking for when inspecting loader buckets without teeth? -
ANSWER Wear of the cutting edges and end bits
What function can the front-end loader NOT perform when equipped with a
multipurpose bucket? - ANSWER Dragline
What front-end loader bucket control is used to raise and lower the bucket? -
ANSWER Lift control lever
Which front-end loader control regulates the transmission speed? - ANSWER
Range control lever
How should you backfill a trench when using a front-end loader with a narrow
bucket? - ANSWER Backfill the area from an angle
What must you do before performing any maintenance action on a front-end
loader? - ANSWER Turn the loader off and set the parking brake
What advantage does a compact track loader (CTL) have over a standard front-end
loader? - ANSWER Can operate in a smaller area
How do you spin a compact track loader (CTL) around within its own body length?
- ANSWER Move the travel controls in opposite directions
If you release the skid-steer loader travel controls levers, - ANSWER Equipment
will stop moving
, You ensure good sweeping action and avoid bystanders or damaging equipment
when using the skid-steer loader with the sweeper attachment by using a broom
pattern - ANSWER Two to three inches wide
How are MOST attachments controlled once the auxiliary hydraulics are activated
in the compact track loader (CTL)? - ANSWER Toggle switches on the travel
controls
What distance in feet is the efficient operating range of a scraper? - ANSWER 300
What four phases of operation make up the work cycle in any scraper operation? -
ANSWER Loading, hauling, spreading, and returning
Generally, push-loaded scrapers should be loaded within a MAXIMUM distance of
how many feet? - ANSWER 100
When operating a scraper, at what speed should you enter the loading area? -
ANSWER Controlled high-return speed
When spreading material with scrapers, why should you route the scrapers so their
tracks overlap? - ANSWER To promote compaction
When spreading materials with a scraper, you should make the fill high on the
outside edges to - ANSWER Prevent the scraper from sliding over the edge
When using a scraper, you can save valuable time on short-radius turns by using -
ANSWER A figure-eight cycle
If the haul road on which you are operating a scraper is rough and no grader is
available, you should - ANSWER Lower the scraper bowl on the return trip to level
the road
Why do you allow the crawler-type dozer engine to idle three to five minutes
before shutdown? - ANSWER Prevent damage to the turbocharger
The attachment of a rear-mounted ripper to a dozer does NOT seriously affect the -
ANSWER Maneuverability of the dozer
What do you do if you are ripping material and your dozer continually lags or
stalls? - ANSWER Reduce the number of teeth
ANSWERS
If you choose to spread materials in layers, you should stop the truck where you
want to start the spread, position the dump control levers, and - ANSWER Raise
the bed enough to break the material free
When properly equipped, a front-end loader can perform tasks associated with each
operation task EXCEPT - ANSWER Trailer operations
What defect are you looking for when inspecting loader buckets without teeth? -
ANSWER Wear of the cutting edges and end bits
What function can the front-end loader NOT perform when equipped with a
multipurpose bucket? - ANSWER Dragline
What front-end loader bucket control is used to raise and lower the bucket? -
ANSWER Lift control lever
Which front-end loader control regulates the transmission speed? - ANSWER
Range control lever
How should you backfill a trench when using a front-end loader with a narrow
bucket? - ANSWER Backfill the area from an angle
What must you do before performing any maintenance action on a front-end
loader? - ANSWER Turn the loader off and set the parking brake
What advantage does a compact track loader (CTL) have over a standard front-end
loader? - ANSWER Can operate in a smaller area
How do you spin a compact track loader (CTL) around within its own body length?
- ANSWER Move the travel controls in opposite directions
If you release the skid-steer loader travel controls levers, - ANSWER Equipment
will stop moving
, You ensure good sweeping action and avoid bystanders or damaging equipment
when using the skid-steer loader with the sweeper attachment by using a broom
pattern - ANSWER Two to three inches wide
How are MOST attachments controlled once the auxiliary hydraulics are activated
in the compact track loader (CTL)? - ANSWER Toggle switches on the travel
controls
What distance in feet is the efficient operating range of a scraper? - ANSWER 300
What four phases of operation make up the work cycle in any scraper operation? -
ANSWER Loading, hauling, spreading, and returning
Generally, push-loaded scrapers should be loaded within a MAXIMUM distance of
how many feet? - ANSWER 100
When operating a scraper, at what speed should you enter the loading area? -
ANSWER Controlled high-return speed
When spreading material with scrapers, why should you route the scrapers so their
tracks overlap? - ANSWER To promote compaction
When spreading materials with a scraper, you should make the fill high on the
outside edges to - ANSWER Prevent the scraper from sliding over the edge
When using a scraper, you can save valuable time on short-radius turns by using -
ANSWER A figure-eight cycle
If the haul road on which you are operating a scraper is rough and no grader is
available, you should - ANSWER Lower the scraper bowl on the return trip to level
the road
Why do you allow the crawler-type dozer engine to idle three to five minutes
before shutdown? - ANSWER Prevent damage to the turbocharger
The attachment of a rear-mounted ripper to a dozer does NOT seriously affect the -
ANSWER Maneuverability of the dozer
What do you do if you are ripping material and your dozer continually lags or
stalls? - ANSWER Reduce the number of teeth
