LESSON
PRACTICE EXERCISE
ANSWER KEY AND FEEDBACK
Item
Correct Answer and Feedback
1.
D.
Slave cables and receptacles.
The M992 Auxiliary Power Unit provides 24 vdc for its own
operation and to the howitzer which it supports. Use of the APU
in this manner contributes to fuel conservation and reduces main
engine wear on the M992 and the howitzer which it supports.
(Page 2, para 3)
2.
C.
30 psi.
Excessive air pressure could damage air filter element by causing
tears in the filtering material and injury to personnel. (Page
10, para 1)
3.
B.
Inner portion.
Applying air pressure to the inner portion of the air
cleaner
element will cause contaminants to be blown outward,
in the
direction in which they entered the filter element.
Blowing
contaminants inward will cause contaminants to become
lodged
deeper into the filter element, still resulting in a
clogged
filter element. (Page 8, last para)
4.
A.
In vehicle main fuel cells.
The vehicle main fuel cells are used to store the fuel required
for all of the vehicle uses. (Page 10, para c)
5.
D.
Electric fuel pumps.
Two electric fuel pumps, placed in line between the fuel
distribution terminal and the fuel filter elements.
(Page 10,
para c)
6.
B.
2.
The fuel filters are mounted on the rear bulkhead of the APU
compartment.
The primary and secondary are used to prevent
contaminants from entering the fuel injection pump and fuel
injector system. (Page 12, para d)
48
OD1702
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