Volvo Penta MB 10 A User Manual

TECHNICAL DESCRIPTION
COOLING
SYSTEM
The
engine and
reduction
gear
are sea-water
cooled
and
the system
is
fitted with a
thermoitat
which
controls
the
temperature
of the
engine"
Cooling
water circulation
is taken
care of by
means
of
a
sea-water
pump
mounted
on
the
timing
gear
housing.
The
pump
is
driven
from the
camshaft
through
a
flange.
The
pump
impel
ler is made
of
neoprene
rubber
and
operates
against
a
cam.
The
pumpsucks cooling water
from
the
sea through
the
water intake.
The
water
is then
forced under
pressure
through
the
exhaust
manifold
cool
ing
iackets
and
fi
lls
the
engine
water
channels.
On
top of
the
engine
there
is a water
distributing
housing
provided
with
a
thermostat.
When the
engine
is cold,
the cooling
channels
in the
engine and
exhaust
manifold
are
filled with
cooling water
which
is
rapidly
heated up.
when the
thermostat
is closed,
the surplus
water
passes
through
the distributing
housing
and
on to
the water-cooled
exhaust
elbow
where
it mixes with
the
exhaust
gases
or
is
conveyed
overboard,
depending
on
whether
a wet or dry
exhaust line
has been
i nsta I led.
The
cooling water
in the
engine
cooling channels
is
rapidly
heated up and
this
causes
the thermostat
to open
and
force the
cooling
water to
pass
the
engine
cooling
channels before
it enters
the
exhaust
elbow. Thethermostat
thus regulates
the
cooling water
circulation
so
that
the
engine always
has
the right
temperature
irrespective
of the
size
of the
engine
load.
Fig.
7. Setting
the two-way
cock
for outgoing
cooling water
The
cock
can be
locked in
the
desired
position
with
a screw, see
arrows
A
= Setting
with drY
exhaust
line
B
=
Setting
with
wet
exhaust
line
ELECTRICAL
SYSTEM
The
electrical
system
has a
voltage
of 12
volts and
is
designed
specially
for marine
USC.
The
engine is
equipped with
a
starter-generator,
which
means
that
the
generator
and
starter
motor are combined
and
are driven
by
vee-belts
from the engine
f
lywheel.
I
TECHNICAL
DESCRIPTION
Warning!
The
following
applies
to
an
engine fitted
with alternator and master
switch:
Never break the circuit between the alternator and
battery while
the engine
is running. To
do
this would be to ruin the charging regulator immediately.
Do not
switch off
the master switch until the engine has
stopped. See
also
under
"Servicing",
point
16.
Wiring diagram,
MB10A
Cable marking
Mark Colour sq.mm.
AWG
15
13
15
o
13
I
5
15
t5
4E
I N5IRUMENI
IN5TRUiltNT
Black i.5
Black 2.5
lvory i.5
lvory 6
Red 2.5
Red
6
Red 16
Brown 1.5
Green 1.5
Blue 1-5
B
A
Fiq.8.
Wiring diagram,
MBl0Awith
Sl
BA starter
generator.
Components
1. Key switch
2. Warning lamp f or
"low
oil
pressure'
3. Battery
charging warning lamp
4. Switch {extra)
5. Connection terminal
6. Connection
terminal
l. Battery
8.
9.
10.
11.
12.
13.
14.
Master
switch
Starter-generator
Charging
regulator
Fuse
Oil
pressure
sensor
lgnition coil
Distributor
I

Volvo Penta MB 10 A Specifications

General

Brand	Volvo Penta
Model	MB 10 A
Category	Engine
Language	English