Service manual
71
Bn1
C
ENGINE
SPECIFICATIONS
ENGINE
SPECIFICATIONS
Engine
Type
Aspiration
Governor
Combustion
Chamber
Bore
&
Stroke
Piston
Displacement
Firing
Order
Direction
of
Rotation
Maximum
Torque
(at
1800
rpm)
Diesel,
four-cycle,
three-cylinder,
fresh
water-cooled,
vertical
in-line
overhead
valve
mechanism
(71
Hp
at
3600
rpm
maximum).
Naturally
aspirated
Electronic
Governing
Swirl
type
3.50
x
4.0
inches
(88.9
x
101.6
mm)
154
cubic
inches
(2.5
liters)
1-3-4-2
Clockwise,
when
viewed
from
the
front
1181b-ft
(16.31
kg-m)
Compression
Ratio
21:1
Dimensions
Height:
26.9
inches
(684.2
mm)
Width:
22.2
inches
(563.6
mm)
Length:
39.5
inches
(1003.3
mm)
Weight
652
Ibs
(295.9
kgs)
Fuel
Consumption
1.4
US
gph
(5.2
Iph)
at
2500
rpm
with
the
prop
(approximate)
allowing
3600
rpm
full
throttle
in
forward
gear
Inclination
Continuous
14°
Temporary
25°
(not
to
exceed
30
min.)
Generator
Power
Take
Off
30
Horsepower
(maximum)
TUNE-UP
SPECIFICATIONS
Compression
Pressure
427
psi
(30
kg/cm')
at
200
rpm
limit
(Limit
of
Difference
Between
Cylinders)
(47.2
psi
{3.0
kg/cm'})
Valve
Timing
Intake
Opens
17"
BTDC
Intake
Closes
47°
ABDC
Exhaust
Opens
51
°
BBDC
Exhaust
Closes
13°
ATDC
Valve
Seat
Angle
Intake
45°
Exhaust
30°
Engine
Speed
1800
rpm
60
Hertz
1500
rpm
50
Hertz
Valve
Clearance
Intake
0.012
inches
(0.3
mm)
(engine
cold)
Exhaust
0.012
inches
(0.3
mm)
Engine
Speed
Idle
speed:
750
-
1000
rpm
Cruising
speed:
2500
-
3000
rpm
Injector
Pressure
1920
+
71
- 0
psi
(135
+ 5 - 0
kg/cm')
Engine
Timing
Static
timed
-
drop
valve
method
0.205
±
.005
in
BTDC
ELECTRICAL
SYSTEM
Starting
Battery
12-Volt,
(-)
negative
ground
Battery
Capacity
400
-
600
Cold
Cranking
Amps
(CCA)
DC
Charging
Alternator
Starter
Starting
Aid
DC
No-Load
Current
DC
Cranking
Current
51
Amp
rated,
belt
driven
12-Volt,
reduction
gear,
3
!WI
Glow
plugs,
sheathed
type
±
2%
of
rated
Amps
250
-
300
Amps
(engine
cold)
General
Fuel
Fuel
Injection
Pump
Fuel
Injection
Timing
(spill
timing)
Nozzle
Fuel
Filter
Air
cleaner
Air
Flow
(engine
combustion)
General
Operating
Temperature
Fresh
Water
Pump
Raw
Water
Pump
.Raw
Water
Flow,
at
3600
rpm
System
Capacity
(fresh
water)
Standard
Gear
Ratio
Prop
Shaft
Rotation
Prop
Recommendations
for
this
Gear
Lubrication
Fluid
Sump
Capacity
FUEL
SYSTEM
Open
flow,
self
bleeding
- 1
bleed
point
No.2
diesel
oil
(cetane
rating
of
45
or
higher)
Bosch
Model
VE
Distributor
0°
TDC
(Top
Dead
Center)
Throttle
type
Spin-on
type,
full
flow
Metal
screen
type
160.4
cfm
(4.5
cmm)
at
3600
rpm
COOLING
SYSTEM
Fresh
water-cooled
block,
thermostatically-
controlled
with
heat
exchanger.
170
-190°
F
(77
-
88°
C)
Centrifugal
type,
metal
impeller,
belt-driven
Positive
displacement,
rubber
impeller,
gear-driven.
10
US
gpm
(37.8Ipm)
(measured
before
discharging
into
exhaust
elbow).
11.5
qts
(10.88
liters)
TRANSMISSION
Hurth
-
case
hardened
helical
gears,
with
servo-operated
multiple
disc
clutch
2.7:
1
Right
hand
20D
x
14P
- 2
blade
or
20D
x
12P
- 3
blade
propeller
should
allow
the
engine
to
reach
it's
full
rated
rpm
(3600
+
000
-
100)
at
full
open
throttle
in
forward
gear.
ATF
type
A
Dextron
II
or
III
0.79
US
quarts
(0.75
liters)
LUBRICATION
SYSTEM
General
Oil
Filter
Sump
Capacity
(not
including
filter)
Operating
Oil
Pressure
(engine
hot)
Oil
Grade
Pressure
fed
system
Full
flow,
paper
element,
spin-on
type
6.5
U.S.
qts
(6.15
liters)
plus
filter/cooler
assembly
50
-
60
psi
(3.5
-
4.2
kg/cm')
API
Specification
CF
or
CG-4,
SAE
30,
10W-30,
15W-40
Engines & Generators
69