GENERAL SPECIFICATIONS
Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 C y c l e
Number of Cylinder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
4
...............................................................
4.25
Bore (inches)
Bore (mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
108
Stroke (inches). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
5
Stroke (mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
127
Compression Ratio (Nominal). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17 to 1
Total Displacement - cubic inches
............................................
284
Total Displacement - litres. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.66
Firino Order - R.H. Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-3-4-2
............... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Number of Main Bearings
5
The engine serial number is prefixed by
numerals indicating the number of cylin-
ders and the letter "A" which designates
a Series 71 engine.
Figure 11A-3. Option Plate
for further information regarding emis-
sion regulations.
With any order for parts, the engine mo-
del number and serial number must be
given.
In addition, if a type number is
shown on the option plate covering the
equipment required, this number should
also be included on the parts order.
All groups of parts used on a unit are
standard for the engine model unless
F i g u r e 11A-2. Engine Model and
S e r i a l Number
otherwise listed on the option plate.
OPTION PLATE
G E N E R A L PROCEDURES
A n o p t i o n p l a t e , attached to the valve
rocker cover, carries the engine serial
General
number and model number and, in addi-
tion, lists any optional equipment used
In many cases, a serviceman is justified
in r e p l a c i n g p a r t s w i t h n e w m a t e r i a l
o n the engine (see Figure 11 A-3).
rather than attempting repair. However,
On-highway vehicle engines also carry
there are times where a slight amount of
an e x h a u s t e m i s s i o n c e r t i f i c a t i o n label
reworking or reconditioning may save
considerable added expense.
next to the option plate. It is separate
Crank-
from the option plate and is mounted
shafts, cylinder liners and other parts
a r e i n t h i s c a t e g o r y . For example, if a
permanently in the option plate retainer.
The label includes information relating to
cylinder liner is only slightly worn and
within usable limits, a honing operation
an engine family for the maximum fuel in-
to remove the glaze may make it suitable
jector size and maximum speed. Due to
F e d e r a l r e g u l a t i o n s , t h e exhaust emission
for reuse, thereby saving the expense of
plate should not be removed from the
a new part.
Exchange assemblies such
rocker cover.
as i n j e c t o r s , f u e l p u m p s , w a t e r p u m p s
Refer to Subsection 11I
General Information
