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Home > Ordnance Documents and other related manuals > > Answer Key And Feedback - OD1712A0041
Practice Exercise cont. - OD1712A0040
Correct Answer And Feedback

Introduction To The M113a3 Armored Personnel Carrier
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LESSON
PRACTICE EXERCISE
ANSWER KEY AND FEEDBACK
Item
Correct Answer and Feedback
1.
C.
209.38 inches.
The M113A3 is 209.38 inches in length compared to a 191
inch length for the M113A2 which uses an internal fuel
tank.  (page 3, para 6)
2.
D.
211.50 inches.
The M113A2 fitted with the external fuel tanks is 211.50
inches in length.  (page 3, para 6)
3.
A.
To compensate for added weight.
An increase in engine horsepower was necessary due to the
additional weight of the M113A3 carrier.  (page 8, para 2)
4.
D.
18 to 1.
The 6V53T engine, model 5063-5392, is turbocharged (T in
6V53T
designates
turbocharged),
and
has
a
nominal
compression ration of 18 to 1.  (page 8, para 2b)
5.
B.
2.
The 6V53 engine has a three-element oil cooler while the
6V53T engine has a two-element cooler.  (page 8, para 2d)
6.
A.
The hull.
The batteries supply the carrier with electricity when the
engine is not running.  The battery compartment is located
at the left rear side of the carrier personnel compartment.
All  of  the  electrical  power  is  distributed  through  the
distribution  box,  cables,  and  wiring  assemblies  to  the
electrical equipment.  The hull serves as a ground for the
electrical system.  (page 15, para 1)
35
OD1712






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