Service manual
SPECIFICATIONS
WESTERBEKE
25
KW
BED
GENERATOR
ENGINE
SPECIFICATIONS
Engine
Type
Aspiration
Govemor
Combustion
Chamber
Bore
&
Stroke
Piston
Displacement
Firing
Order
Direction
of
Rotation
Compression
Ratio
Dimensions
Weight
Diesel,
four-cylinder,
four-cycle,
fresh
water-cooled,
vertical
in-line
overhead
valve
mechanism.
Naturally
aspirated
Electronic
Goveming.
Swirl
type
3.74
x4.13
inches
(95
x
105
mm)
182
cubic
inches
(2.98
liters)
1-3-4-2
Clockwise,
when
viewed
from
the
front
21
: 1
Height
28.6
inches
(726.5
mm)
Width:
23.3
inches
(591.8
mm)
Length:
44.9
inches
(1149.4
mm)
678
Ibs
(307
kgs)
Inclination
Continuous
15°
Temporary.
25°
(not
to
exceed
20
min.)
Generator
Power
Take
Off
40
Horsepower
(
Maximum)
TUNE-UP
SPECIFICATIONS
Compression
Pressure
427
psi
(30
kg/cm')
at
200
rpm
(Limit
of
difference
between
cylinders)
(47.2
psi
{3.0
kg/cm'})
Valve
Timing
Intake
Opens
17°
BTDC
Intake
Closes
47°
ABDC
Valve
Seat
Angle
Valve
Clearance
(engine
warm)
Injector
Pressure
Engine
Timing
Exhaust
Opens
51
°
BBDC
Exhaust
Closes
13°
ATDC
Intake
45°
Exhaust
30°
Intake
0.012
inches
(0.3
mm)
Exhaust
0.012
inches
(0.3
mm)
1920
+
71
- 0
psi
(135
+ 5 - 0
kg/cm')
Static
timed
-
drop
valve
method
0.205
±
.005
inches
BTDC
EXHAUST
EMISSIONS
SYSTEMS
Emission
Control
Systems
Indirect
Fuel
Injection
General
Fuel
Fuel
Injection
Pump
Fuel
Injection
Timing
Nozzle
Fuel
Filter
(on
engine)
Air
cleaner
Air
Row
(engine
combustion)
General
Operating
Temperature
Fresh
Water
Pump
Raw
Water
Pump
Raw
Water
Flow,
at
3600
rpm
System
Capacity
(coolant)
FUEL
SYSTEM
Open
flow,
self
priming
- 1
bleed
point.
No.2
diesel
oil
(cetane
rating
of
45
or
higher)
ZEXEL
Model
VE
Distributor.
0°
TDC
(Top
Dead
Center)
Th
rottle
type
Spin-on
type,
full
flow
Metal
screen
type
-
cleanable
94.6
cfm
(2.7
cmm)
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,
belt-driven.
15.0
gpm
(56.7lpm)
(measured
before
discharging
into
exhaust
elbow).
13.0
qts
(12.3
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
(6.15Iiters)
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
ELECTRICAL
SYSTEM
Starting
Battery
Battery
Capacity
Starter
Starting
Aid
12-Volt,
(-)
negative
ground
300
-
600
Cold
Cranking
Amps
(CCA)
12-Volt,
reduction
Glow
plugs,
sheathed
type
Engines
&
Generators
76