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5
FIRING ORDER
NO.
OF
CYLINDERS
STANDARD ROT.
OPPOSITE ROT.
2
1-2
4
1-2-4-3
6
1-5-3-6-2-4
1-4-2-6-3-5
V-8 LEV
1-2-7-5-6-3-4-8
1-8-
1
+-3-6-5-7 -2
V-8 SEVH
1-2-7-5-6-3-4-8
1-8-4-3-6-5-7-2
V-8 NKEV
1-5-6-3-4-2-7-8
1-8-7-2-4-.3-6-5
7.
OPERATION OF STANDARD REVERSING
GEAR
Several types of reversing gears are
used
on
UNIVERSAL
engines.
The
operation, however,
is the same in
all cases.
See Paragraph
6,
Sec-
tion IV,
for detailed
operation.
a. Moving the lever to
the forward
position (toward engine) places the
transmission in forward drive.
b. Moving the
lever
to the
stern
position
(away
from
the
engine)
places the
transmission in
reverse
drive.
c. Moving
the lever to
the center
position
puts the
transmission in
neutral and
no power
is delivered
to the propeller shaft.
8. OPERATION OF HYDRAULIC REVERSING
GEARS
a. The hydraulic reversing
gear is
basically a hydraulically
operated
multiple disc clutch in comb.ination
with
a
hydraulically
operated
planetary reversing gear train. The
-)6-
gear positions
are stamped
on the
top cover. See Paragraph
6,
Section
IV for detailed operation.
(1) Moving the lever,
on the
top
cover,
to the "F" position places
the transmission in forward drive.
(2)
Moving
the
lever
to
the "R"
position
places the
transmission
in reverse drive.
()
Moving the lever to the center,
or "N" position places the trans-
mission in neutral.
b. The design of the reversing gear
is such that
the operation of both
the forward
and reverse
drives is
almost instantaneous with the move-
ment of the shifting control lever.
This condition
exists even
at low
speeds.
For this reason
it is not
necessary to race the engine to ob-
tain good shifting characteristics.
In fact,
it is advisable
to shift
at low speeds,
below 1400 RPM, and
preferably in
the 800 to
1000 RPM
range.
Shifting
at
conservative
engine speeds will avoid
damage to
the boat,
engine
reversing gear,
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