PARTS LIST
WESTERBEKE 50
Marine Diesel Engine
Publication #23157
Edition One
June 1978
~r-.v-
'WESTERBEKE
J WESTERBEKECORPORATION
•
MYLES
STANDISH
INDUSTRIAL
PARK
150
JOHN HANCOCK
ROAD,
TAUNTON,
MA
02780-7319
NOTE
The
Westerbeke policy
is
one
of continuous
improvement.
and
accordingly, the
company
reserves
the
right
to
alter
specifications.
weights
and
dimensions without
prior
notice.
In
compiling
this
Parts
List.
every care
has
been
taken. but specifications
and
details
must
not
be
regarded
as
binding.
Please,
if
you
have
a suggestion regarding
this
book,
or
feel there
is
an
error,
send
a
written note to the
attention
of Publications
Department.
The
unit of
measure
on
linear
commodities
is
the
INCH
(not
feet
or
yards).
The
code
in
the quantity
column
"AR"
indicates
that
quantity
varies. Therefore, order
amounts
As
Required:
TABLE
OF
CONTENTS
200
Cylinder
Block
- Piston
202
Cylinder
Head
204
Crankcase -
Rod
-
Camshaft
206
Rocker
Shaft
208
Timing
Cover
210
Sump
-
Lube
Oil
Pump
212
Crankcase Breather
214
Fuel
System
218
Fuel
Pressure Switch -
Water
Separator
220
Cooling
System
224
Sea
Water
Pump
226
Mounts
226
Photographs of
Engine
228
Back
End
Arrangement
230
Electrical
System
234
Short
Profile
Sailing
Gear
-
Model
10
238
Type
SAO
Manual
Transmission
242
Miscellaneous
W~STERBEK~
50 -
CYLINDER
BLOCK
- PISTON
2
26
27
2(Hl
REF
1
2-
1
2 - 2
4
5
6
7
8
9
1Q
11
12
1:3
14
15-
1
15-
2
16-
1
16-
2
17
18
19
20
21-
1
21-
2
21-
3
22-
1
22-
2
22-
:5
23
27
25
26
27
28
29
30-
1
30-
2
PN
19404
23270
24
(}4
5
2:3222
23265
23266
14595
15481
1~561
14553
14482
14558
23264
23263
14606
24046
232;2
24047
17961
14437
14649
14453
23223
232~C
23259
23258
23257
2:32C;6
23255
144~1
23254
23189
23:362
14563
1456~
23190
14562
WESTER8EKE
5C
-
CYLINDER
BLOCK
-
PISTON
ENGINE
BLOCK
BLOCK
PLUG
PLUG
PLl:IG
PLUG
PLUr,
PLUG
PLUG
STUD
STUD
STUD
8
OL
T
LINER
LINER
ADAPTER
ADAPTER
GASKET
DOWEL
PLUG
WASHER
PISTON
PISTON
PISTON
RING
SET
RING
SET
RING
SET
PIN
CIRCLIP
LINER
GASKET
COVER
8
USH
I
NG
WASHER
COVER
r.ASKET
REMARKS
ASSEMBLY
SHORT
7388/0101
THRU
0459
SHORT
738B/D~60
ON
CORE
OIL
GALLERY
TAPER-OIL
HOLE
TAPER-OIL
HOLE
DRILLING
TO
CAMSHAFT
BEARIN6
OIL
RELIEF
VALVE
VENT
HOLE
WtLCH
CYLINDER
HEAD-SHORT
OIL
PUMP-NLA
FUEL
PUMP
PLACE
MAIN
BEARING
CAMSHAFT
BEARING
7388/0101
THRU
0459
CAMSHAFT
BEARING
738B/D~60
ON
OIL FILTER
7388/0101
THRU
0459
OIL FILTER
738B/D460
ON
MAIN
BEARING
END
CAP
BACKPLATE
LOCATING
CYLINDER
DRAIN
ASSEMBLY
STANDARD
ASSEMBLY
.020
OIS
ASSEMBLY
.040
OIS
1
CYLINDER
STANDARD
1
CYLINDER
.020
OS
1
CYLINDER
.040
as
PISTON
CYLINDER
CYLINDER
SIDE
COVER-REAR-CORK
C¥LINDER
SIDE-REAR
RUBBER
CUP
CYLINDER
SIDE
COVER-FRONT
CYLINDER
SIDE
COVER-FRONT-RUBBER
QUAN
1
1
1
2
6
1
1
1
2
3
10
2
10
1
1
1
1
2
2
1
1
4
AR
AR
AR
AR
AR
201
'+
4
'+
1
1
1
1
1
1
WESTERBEKE
202
!SO
-
CYLINDER
11
0.--
23
0-
21
HEAD
1
WESTERBEKE
50 -
CYLINDER
HEAD
REF
P"J
NAME
RE~APKS
QUAN
1-
1
23223
HEAD
ASSEMBLY-CYLINDER
7388/0101
THRU
D459
1
1-
2
24048
HEAD
ASSEMBLY-CYLINDER
7388/0460
ON
1
2
14447
GUIDE
VALVE
8
3
14595
PLUG
5
4
23998
PLUG
CORE
1
5
14500
PLUG
CORE
7
6
145'\3
PLUG
CORE
:3
1
14552
PLUG
OIL
HOLE
1
8
23221
PLUG
CORE
2
9
23220
INSERT
COMBUSTION
CHAMBER
4
111
23219
INSERT
VALVE
SEAT-INTAKE
4
11
23218
INSERT
VALVE
SEAT-EXHAUST
4
12
14556
STUD
ROCKER
BRACKET-SHORT
2
13
14559
STUD
ROCKER
BRACKET-LONG
2
14-
1
23995
STUD
THERMOSTAT
HOUSING
:3
14-
2
144'+0
WASHER
:3
14-
3
14441
NUT
:3
15
14631
STUD
EXHAUST
MANIFOLD
2
16
23217
STUD
MANIFOLDS
4
17
146D7
STUD
INJECTOR
HOLDER
8
18
23216
VALVE
INTAKE
4
19
23215
VALVE
EXHAUST
4
20
23214
SPRING
VALVE
8
21
'3213
COLLAR
VALVE
SPRING
8
22
17729
SEAL
VALVE
STEM
OIL
4
23
20716
COTTER
8
24
23212
CUP
VALVE
SPRING
8
25
1457e
PLUG
2
26
14445
NUT
CYLINDER
HEAD
STUD
11
27
14511
NUT
PILLAR
:3
28
23211
WASHER
14
29
23210
GASKET
HEAD
1
30
14529
PLUG
GLOW
4
31
14494
WIRE
GLOW
PLUG
3
32
15760
HOUSING
THERMOSTAT
1
33
145Ql
GASKET
THERMOSTAT
HOUSING
1
34 1792£.
THERMOSTAT
180F
1
35
11471
PETCOCK
1
36
11752
PLUG
2
2D3
WESTr~8EKE
50
-
CRANKCASE
-
ROO
-
CAMSHAFT
34
~4036
~
,,,O~,
I
@ /
i~·
41
1
""/
~42
37
39
I
11\"..;5
I
38
35
'.
44--a
~
j
30
43
7
46
4S
8---!\
9--\D
6
204
WESTERBEKE
50 -
CRANKCASE
-
ROD
-
CAMSHAFT
REF
PN
NAME
REMARKS
QUAN
1
23253
ROD
CONNECTING,ASSEMBlY
4
2
144'+8
BUSHING
4
~
23252
CAPSCREW
CONNECTING
ROD
8
..J
4
23251
NUT
8
5
23248
CRANKSHAFT
ASSEMBLY
1
6-
1
23250
BEARING
CONNECTING
ROD-STD-SET
1
6-
2
23249
BEARING
CON
r~
E C
TI
N G ROD-Ot O-SET 1
1-
1
23244
~EARING
MAIN-STD-SET
1
1-
2
23243
BEARlr--!G
MAIN-010-SET 1
8-
1
23242
WASHE~
THRUST-UPPER-STD
2
8-
2
23241
WASHER
THRUST-UPPER-OIO
2
9-
1
2324
C
WASHr::R
THPUST-LOWER-STD
2
9-
2
23239
WASHER
THRUST-lOWER-OlD
2
10
23241
BUSHING
CRANKSHAFT
1
11
2324r;
eUSHH!G
1
12
23245
DOWEL
1
13
14415
GEAR
CRANKSHAFT
1
14
23237
KEY
2
15
14654
SPACER
GEAR
AR
16
14598
SLINGER
CRANKSHAFT-FRONT
1
17
23148
PUllEY
CRANKSHAFT
1
18
23235
BOL
T
PUllEY
TO
CRANKSHAFT
1
19
14574
TABWASHER
1
20
23233
DAMPER
VIBRATION 1
21-
1
23232
CAMSHAFT
1388/0101
THRU
D4~O
1
21-
2
24049
CAMSHAFT
138B/D460
ON
1
22
14589
PLATE
CAMSHAFT
lOCATING 1
23
14449
GEAR
CAMSHAFT
1
24
1'+531
KEY
CAMSHAFT
GEAR
1
25
14549
NUT
CAMSHAFT
GEAR
RETAINING 1
26
14541+
TA8lJASHER
1
27
23231
GEAR
IDLER
1
28
2323
C .
CHAIN
TIMING 1
29
23229
TE"JSIONER
CHAIN
1
30
23228
SHOE
CHAIN
TENSIONER
1
31
23221
PIN
STOP-TENSIONER 1
32
2322~
CIRClIP
SHOE
TO
PIN
1
33-
1
15302
TAPPET
STD
8
33-
2
1",303
TAPPET
010
8
33-
3
23225
TAPPET
020
8
34
23221+
PUSHROD
8
45
22324
PULLEY
DRIVE
SEA
WATER
PUMP
1
46
CAPSCREIII
5/16NF
X
3/4
LG
4
I+b
23991
HUB
IDLER
GEAR
1
205
206
~
20
WESTERBEKE
50 -
ROCKER
S~AFT
~19
~18
17
14 I
L,~
___
16~
12~
2
3
13~
WESTERBEKE
51}
-
ROCKER
SHAFT
REF
p~
NAME
REMARKS
QUAN
1
14438
SHAFT
VALVE
ROCKER
1
2
14547
BRACKET
ROCKER
SHAFT-TAPPED
1
3
14456
BRACK'=T
ROCKER
SHAFT-PLAIN
:3
4
14551
SPRING
ROCKER
SHAFT
:3
5
1460~
ROCKER
ASSEMBLY
8
6
14612
BUSHING
ROCKER
8
1
146-25
RIVET
ROCKER
8
8
232~8
SCREW
TAPP~T
ADJUSTING
8
"
14416
NUT
LOCKING
8
10
14481
SCREW
ROCKER
SHAFT
LOCATING
1
11
14483
PLATE
LOCKING
1
12
14605
WASHER
DOUBLE
COIL
SPRING
2
13
23201
SHIM
CENTER
ROCKER
BRACKET
2
14
14lt19
COVER
ROCKER-VALVE
1
15
17935
CAP
OIL FILL
1
16
14436
GASKET
ROCKER
COVER
1
17
1ltA08
GROMMET
2
18
14809
WASHER
CUP-ROCKER
COVER
2
19
1lt801
BUT
CAP
2
20-
1
15299
EYE
LIFTING
2
20-
2
146lt7
SPACER
WHEN
EYE
IS
REMOVED
2
207
208
5Q
-
TIMING
COVE~
WESTERBE'KE
11
/1
\~/
"---,
-~---'
8
WESTERBEKE
5C
- TIMPJ6
COVEP
REF
pr-.J
NAME
REM
....
RKS
QUAN
1
23197
COVER
FRONT-ASSEMBLY
1
2
14~4~
SEAL
OIL-FRONT
COVER
1
3
2319~
GA
SK
ET
COVER
TO
PLATE
1
4
23195
O-RING
COVER
TO
PLATE
BOLT
1
5
23194
PLATE
FRONT
1
6
2319:!
PIN
TENSIONER
SHOE
PIVOT
1
7
23192
BOLT
FUEL
INJECTION
PUMP
AND
HUB
'1:
o.J
8
23191
GASKET
PLATE
TO
BLOCK
1
"
19210
ALTERNATOR
551\
12VDC
1
10
11125
STRAP
ALTERNATOR
ADJUSTING
1
11
11548
PULLEY
ALTERt-.JATOR
1
12
22919
BRACKET
ALTERNATOR
SUPPORT
1
209
WESTERBEKE
50 -
SUMP
-
LUBE
OIL
PUMP
3-i
2~
8
~5
14
15
11
~
12
210
WESTERBEKE
50 -
SUMP
-
LUBE
OIL
PUMP
REF
PN
IIJA~E
RE"'ARKS
QUAN
1
2320~
PU"'P
LUBE
OIL
1
2-
1
~3205
GASKET
PU"'P
TO
CRANKCASE
1
2-
2
14440
IIASI-tER
FLAT
3
2-
3
14497
WASI-IER
LOCK
:5
3
23204
SHAFT
OIL
PUMP
DRIVING
1
4
14588
SToRA
INER
OIL
PICKUP
1
5
1452~
GASKET
STR4INER
TO
OIL
PUMP
1
6
1'+550
VALVE
OIL RELIEF
1
7
2320~
SPRING OIL RELIEF
VALVE
1
8
23202
NUT
CAP-OIL RELIEF
VALVE
1
9
14~28
WASHER
COPPER
1
l~
231C:O
SUMP
LUBE
OIL
1
11-
1
154(,~
PLUG
DRAIN
1
11-
2
1
~4
7S
ELBOW
1
11-
:5
22927
HOSE
LUBE
OIL SUCTION-INCHES
REQUI~ED
24
11-
'+
22929
ADAPTER
HOSE
TO
ELBOW
1
11-
5
12262
CLAMP
HOSE
SUPPOR
T 2
11-
:,
13736
CLAMP
HOSE
SUPPORT
2
12
14541
WASHER
DRAIN
PLUG
1
13
232~O
GA
SK
EoT
SUMP
1
14
23199
DIPSTICK 1
15
23198
TUBE
DIPSTICK 1
16
14517
WASHER
SUMP
TO
ElLOCt(
18
211
WESTEPBEKE
50
-
CRANKCASE
BREATHER
212
WESTERBEKE
50 -
CRANKCASE
BR
EA
THER
REF
PN
~!AME
P
EMA
RKS
QUAN
1
2153~
SILENCER
AIR
INTAKE
1
2
13335
EL81)W
1
:3
16353
TU~ING
AR
4
11775
HOSE
1/2
10
16
5
17298
CLAMP
HOSE
2
~
23362
BREATHER
1
1
23189
GASKET
1
8
1'4563
BUSHING
R
UBB
ER
•
...
9
14564
WASHER
CAP
1
10
CAPS
CREW
5/16
UNF
X
2-1/'+
LG
1
213
f\)
~
..,..
I
"~''''.
!
48
t . I
{;),
..
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fdj
9 14
13
26
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REF
1-
1
1-
2
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
11
18
19-
1
19-
2
2G
21
22
2~
24
25
26
21
28
29
3(1
31
32
33
34
35
3E
37
3&
39
40
41
42
43
44
45
46
23182
23181
11943
11935
23844
14490
144~
4
144j::2
144'::'3
117q3
11944
14h~3
1193~
13343
13344
2D95{1
14771
14716
21918
14664
14541
14f~2
21739
23919
23921
23922
23920
19321
11615
19320
19442
19187
1918~
11383
17149
?31a4
23185
23186
23181
23188
23999
23271
13325
13810
23427
13811
11598
WESTERBEKE
5C
-
FUEL
SYSTEM
NAME
INJECTOR
IIJOZZLf.
WASHER
BeLT
LINE
W~S~ER
WAS~ER
S~IELD
WASHER
TUEING
WASHER
E
OL
T
BANJO
FERRULE
1\iUT
HOSE
FILTER
ELEMENT
O-RING
PLUG
\JAS~ER
BOLT
VALVE
BRACKET
BRACKET
lINE
LINE
C
LA
M P
O-R
I
NG
PLUG
O-R
I
NG
WASHER
80lT
ADAPTER
SWITCH
GASKET
PLATE
FLANGE
GEAR
GASKET
HUB
LINE
PUMP
CLAMP
SHIM
BRACKET
CLAMP
FILTER
RE1'4ARKS
ASSEMBLY
INJECTOR
BANJO
BANJO
INJECTOR
RETURN
INJECTOR
TO
HEAT
SHIELD-THICK
INJECTOR
SEALING-STEEL
HEAT
HEAT
SHIELD
TO
HEAD
BUNDY
BANJO
BANJO
3/16
LINE
FUEL
RETURN
FUEL-COMPLETE
FUEL
FILTER
INCLUDING
a-RINGS
SEAL
ELEMENT
IN
FILTER
FUEL
FILTER
PORT
PLUG
FILTER
CENTER
CHECK
FILTER
MOUNTING
CIRCUIT
BREAKER
MOUNT
FILTER
TO
INJECTION
PUMP
INJECTION
PUMP
TO
FILTER
FUEL
LINE
BANJO
BOLT
BANJO
FUEL
PRESSURE
PUMP
TO
HUB
DRIVING
FLANGE
LOCATING
DRIVING
DRIVING
HUB
TO
FRONT
PLATE
INJECTION
PUMP
OIL
FROM
CRANKCASE
TO
HUB
INJECTION
THROTTLE
PRIMARY
FUEl-SEDIMENTER
QUAN
AR
215
4
4
8
4
1
4
'+
4
'+
2
1
1
2
2
1
1
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
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