Westerbeke W-52 User manual

anew
• •
:Joma.·.oF
diesels I
• FOur cycle , fOur cylinder
52 H.P . marine engine
• lOW prOfile and lightweight
•
New self priming fuel system with electric shut Off
• HI-capaclty heat exchanger with removable end caps and zinc electrode
•
Fresh water cooled manifOld with front or rear eXhaust openings and a
remote recovery tank
fOr visible coolant monitoring.
• Heavy flywheel, precision balanced , fOr that steam engine effect
• Tuned air Intake silencer for lower noise level
ENGINES: 10.2, 13, 21, 27, 33, 46, 58, 70, 80, 100, 120
" ., , . . .
.,. .

A NEW COMPACT DIESEL, 52HP FOR YACHTS UP TO 55FT .
- -- _ -_ .!.- _ _ - - ~" t '
CO STRU CTION
I. Cylinder Head: The special cast-iron cylinder head is
precision-cast by the shell moulding process and then
sof t-gas-
nitrided for increased durability. The intake and exhaust ports
are arranged for crossflow to raise th e in take and exhaust effi-
ciency. The s wirllype precombustion chamber is used.
2.
Cylinder Block: Weight reduction achieved by technologies
of thin wall ductile cast iron and half skirt. The water rail
is
designed to provide uniform distribution of coolant to the cylin-
der head. The cylinder liner is of the dry type of hi g h-
ph os phorus cast iron, which is given special honing to provide
quick seating. and good oil retention, thus increasing wear
resistance.
3. Cr ank Mechanism: The forged crankshaft is supported by 5
bearings. The autothermatic piston
of Lo-Ex alloy has a sheet
metal cast in
it s skirt so as to ho ld th e thermal expansion of the
piston,
th ereby making it possible to lessen the pistonclearance.
The piston pin is offset by O.5mm . All th ese improvements
ensure quiet opera
ti on from low to hi gh speeds.
4. Valve Mechanism: O .H.V. Both intake and exhaust valves
are of rotation type for higher durability of the valve seat.
Coupled with a fric ti on gear with one extra too th , the timing
g
ear train is intended to eliminate th e backlash at the time of gear
engagement to reduce gear noise.
5. Intake and Exhaust System: The intake manifo
ld is of inde-
pendent branch type for higher intake efficiency.
6. Fuel System: The fuel injection pump is a Bosch VE type
distributor pump, small
in size and li ght in weight, contributing
toward n
oise reduc ti on. Since fuel can be c ut with the solenoid
valve built in
th e pump, the engine operation can be stopped by
turning
off the ignition switch.
SPECIFICATIONS
Number of Cylinders & Arrangement ......... .... 4 in-line
Cylinder Bore & Stroke ............... 3.50 in. x 3.5 I in .
Displ
aceme nt ............................ 134 .8 C.LD.
Co mpr ession Ratio .........• . ...... . ............ 2 I: I
Combustion Chamber ....•.................. Swirl Type
Firing
Order ................. . ............... 1-3-4-2
Injection Pump .......... . ....... Bosch Di stributor Type
Governor ..... .. .... .. ... .. . Mechanical (Built in Pump)
Lubrication Method
... .. ............ Pressure Feed Type
Cooling Method ......... .. ......... Fresh Water Cooled
Cold Starting Aid .......................... Glow Plug
Electrical System Voltage .......... . ........... 12 Vo lt s
Dry Weight
of Engine (w/2: I Trans.) .. . . . ........ 627 Ib s.
P
owe r Take-off ............ . .. Various Crankshaft Pulleys
PERRlRMANCE CURVE
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EHr.rtIE SPEfD RPM
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I'ERFOR:\\A ' CE DATA
Maximum Torque ........ 93.3 ft. Ib ./ 2500 r.p.m.
One hour Rating
35 HP/2000 r.p.m.. 53 HP/3000 r.p.m.. 66 HP/4000 r.p.m.
Continuous Rating
30 HP/2000 r.p.m., 45 HP/3000 r.p.m.. 56 HP/4000 r.p.m.
Typical Fuel Consumption Rate
......... 06 3 US gal/HP/hr
Typical Fuel Consumption Rate at 2500 RPM
when wheeled to tum 3000 RPM
......... 1.7 US gal/hr
Capacity
of Lubricant ............ . .. . ......... 5.3 qts.
Ca pacity of Coolant ...... . ............. .... 10. 5qt s.
STA:'\OARO EQlIPME'T
Cl ut ch and 2:I Reduction Gear (R.H. Propeller)
Adjustable flexible mounts on 1
8" centers
Fr
es h watercooling system
12 vo lt 55 ampere a lt e rn ator
Cl
ut ch and throttle control brackets (
Glow plug
co ld start in g aid
Engine pre-wired with single 8 pin connector
Elect
ri c shut off
Ope rators manual
Alarm, l
ow o il pressur e, high water te mperature
Water Inj
ec ted Exhaust Elbow
Lube Oil Drain Hose
Fl
owco ntroller- forea sy co nn ec ti onofdo me s ti c hot water heater
OPTIONAL EQUP:\IE"iT
Various accesso ry fro nt pulleys
Hydro-Hush Muffler
Sea Water Strainer
Alternator Output Spliner
Add
it ional 55 amp . alternator
Primary 90 amp. alte
rn ator
18/ 20 /22y," mounting centers
R
emo te mounting lu be oil fi lt er
Five function Electric In strume nt Panel including Hour Meter
and Tachometer
A wide variety
of manual and hydraulic tr an s mi ssions are av ai l-
able in various reduction gears and vee drives.
Front exhaust outlet for Vee Drive app
li cations
CALL YOUR WESTERBEKE REPRESENTATIVE
[ 1
OR CONTACT THE. . . (
J. H. WESTERBEKE CORP.
Marine 2J84J5 M A
vo n Ind ustri al Park, A vo n, MA 02 322, (617) 5 88· 7700
Cable : We stc orp , A vo n, Te lex: 92- 444 4

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a new concept
r--.....,
• •
1nmarlne
diesels
• FOur cycle ,four cylinder
52 H.P.marine engine
• LOW prOfIle and lightweight
•
New self priming fuel system with electric shut off
• HI-capaclty heat exchanger with removable end caps and zinc electrode
•
Fresh water cooled manifold with front or rear exhaust openings and a
remote recovery tank for
visible coolant monitoring.
• Heavy flywheel, precision balanced , for that steam engine effect
• Tuned air Intake silencer for lower noise level
ENGINES: 13,21,27,30,33,40,50, 58,70,80,100,12
.. . ,

A NEW COMPACT DIESEL, 52 HP FOR YACHTS UP TO 55 FT .
, .... . .. ', I '
. I ,. 4>l.
.... ,'"
II
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CONSTRUCTION
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I. Cy linder H ea d: The special cast-iron cylinder head is
precision-cast by the shell moulding process and then soft-gas-
nitrided for increased durability.
The intake and exhaust ports
are arranged for crossflow to raise the intake and exhaust effi-
ciency.
The swirl type precombustion chamber is used.
2.
Cy linder Block: Weight reduction achieved by technologies
of thin wall ductile cast iron and half skirt. The water rail is
designed to provide uniform distribution of coolant to the cylin-
der head. The cylinder liner is of the dry type of high-
pho sphorus cast iron, which is given special honing to provide
quick seating. and good oil retention, thus increasing wear
re sistance.
3. Crank Mechanism: The forged crankshaft is supported by 5
bearings.
The autothermatic piston of Lo-Ex alloy has a sheet
metal
cast in its skirt so as to hold the thermal expansion of the
piston, thereby making
it possible to le ssen the piston clearance.
The piston pin is offset by 0.5rnm. All these improvements
ensure quiet operation from l ow to high speeds.
4.
Va lve Mechanism: O.H.V. Both intake and exhaust valves
are
of rotation type for higher durability of the valve seat.
Coupled with a friction gear with one extra tooth, the timing
ge ar train is intended to eliminate the backlash at the time of gear
engagement to reduce gear noise.
5. Intake and Exhaust System: The intake manifold is
of inde-
pendent branch type for higher intake efficiency.
6. Fuel System: The fuel injection pump is a Bosch VE type
distributor
pump, small in size and light in weight, contributing
t
oward noise reduction. Since fuel can be cut with the solenoid
va lve built in the pump, the engine operation can be stopped by
turning off the ignition switch.
SPEClFlCA TlONS
Number of Cylinders & Arrangement ......... 4 in-line
Cylinder Bore & Stroke ............... 3.50 in . x 3.51 in .
Displacement ............................ 134 .8 C. l.D.
Comp ression Ratio ............. . •............. . 21: I
Comb us ti on Chamber ....................... Swirl Type
Firing
Order .......... . ................. 1-3-4-2
Injection Pump
........... . ...... Bosch Di stributor Type
Governor ................... Mechanical (Bui lt in Pump)
Lubrication Method
................. Pressure Feed Type
Cooling Method .................... Fresh WaterCooled
Cold Starting Aid ....... . .............. Glow Plug
Electrical System Voltage ...................... 12 Volts
Dry W eig ht of Engine (w/2: I Trans.) ............ . 627 Ibs .
Power Take-off ............... Various Crankshaft Pulleys
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1".· •• , ;'" ' ....
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PERFORMANCE DATA
Maximum Torque ......... .
One hour Rating
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PERFORMANCE CURVE
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ENGINE SPEED RPM
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93.3 ft. Ib ./25oo r.p.m.
35
HP /2ooo r. p.m. , 53 HP/3ooo r.p.m .. 66 HP/4ooo r.p.m.
Continuous Rating
30 HP/2 ooo r.p.m .. 45 HP/3ooo r.p.m .. 56 HP/4ooo r.p.m.
Typical Fuel
Co n sump ti on Rate ......... 063 US gal/HP/hr
Typical Fuel Consumption Rate at 2500 RPM
when wheeled to tum 3000 RPM
Capacity of Lubricant ... . ...... .
Capacity
of Coolant ....... .
STA 'DAR!> EQL ' IPMENT
Clutch and 2: I Reduction Gear (R.H. Propeller)
Adjustable flexible mounts on 18" centers
Fresh watercooling system
12 volt 55 anlpere alternator
Clutch and throttle
co ntrol brackets
Glow plug co ld starting a id
Engine pre-wired with single 8 pin connee lOr
Electric shut off
Operators manual
Alarm, l
ow o il pressure, high water temperature
Water In jected Exhaust Elbow
Lube Oil Drain Hose
I.7 US gal/hr
5.3 qts.
10 .5 qts.
Flowcontroller-foreasy connec
ti on of domestic hot waterheater
OI'TlONAL EQUIPi\IE:'IiT
Various accessory front pulleys
Hydro-Hush Muffler
Sea Wat er Strainer
Alternator Output Splitter
Additional 55 amp. alternator
Primary 90 amp. alternator
1
8/20/22 v, " mounting centers
Remote mounting lube o
il tilter
Five function Electric In strument Panel including Hour Meter
and
Ta chometer
A wide variety of manual and hydraulic trans mi ssions are avail-
able in va ri ous reduction gea rs and vee drives.
Front exhaust outlet for Vee Drive applications
CALL YOUR WESTERBEKE REPRESENTATIVE
[ ___ ~ l
OR CONTACT THE ...
J. H. WESTERBEKE CORP.
Manne NLP 6/6217500 Prlnled In US A
Avon Industrial Park, Avon, MA 02322, (617) 588- 7700
Cable: Westcorp, Avon, Telex: 92-4444
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anew
in
• 1=Our cycle , fOur CVllnder
52 H.P . martne engine
• LOW profile and lightweight
• New self priming fUel system with electric shut Off
• HI-capaclty heat exchanger with removable end caps and zinc electrOde
• Fresh
water cooled manifOld with front or rear exhaust openings and a
remote recovery tank fOr visible coolantmonitOring.
• Heavy flywheel, precision balanced, fOr
that steam engine effect
• TUned air Intakesilencer fOr lower noise level
•• WESTERBEKE
W-52

A NEW COMPACT DIESEL, 52HP FOR YACHTS UP TO 55FT.
, I
17.0
I ,
2.87
7.
50
14 .0 25 .0 ---- -;
WESTERBEKE W· 52
series 18
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TRAil' 1 . ~!OUC.lOII ~ .. _
1.5 ...
tA".un
22.0
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PERFORMANCE C URVE
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'" ENGINE SPEED RPM
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16 . 25 ___ '; I
20 . 50 -!
- -- l~ . O ---
CONSTRUCTION
l. Cy linder Head: The special cas t- ir on cylinder he ad is precision-
cas t by the shell moulding pr ocess and then soft-gas-nitrided for
incr
ease d durability.The intakeand exhaust portsare arranged for
cr
oss fl ow to raise the intake and exhaust efficiency. The swirl type
precombustion chamber is
us ed.
2. Cylinder Block: Weight reduction
ac hieved by te chnologi es of
thin wall ductile cas t iro n and half skirt. The water rail isd es igned
to provide uniforl11 distribution of coolant to the cylinder head.
The cylinder liner is of the
dr y type of high-phosphorus cas t iron,
which isgiven spec ial honing to providequick sea tin g, and good oil
retention, thus incre
asi:1 g wear r es istan ce .
3. Crank M ec hanism: The forged crankshaft is supported by 5
b ea rings. Th eautothermatic piston of Lo-Ex alloy ha sa sh ee t metal
cas t in its skirt so as to hold the thermal expansion of the piston,
thereby making it pos
si bl e to l esse n the piston clearan ce . The p is -
ton pin is offset by 0.5111 111 . All th ese improve ments ens ur e quiet
operation from l
ow to high sp ee d s.
4. Valve Mechani sm : O. H.V. Both intake and exhaust val ves are of
rotation type for higher durability of the valve
se al. Co upled with a
friction gear with one extra tooth, the timin g ge ar train is intended
to eli
mi nate the backl as h at the tim eof gear engagement to redu ce
gea r noi se .
S. Intake and Exh<lust Sys tem:The intake manifold isof independ·
ent branch type for higher intake efficiency.
6. Fuel System: The fu el inj ec tion pump is it B osc h VE type distrib-
ut or pump, small in si ze and light in weight. con tr ibuting toward
noi se reduction. Sin ce fuel ca n be cut with the solenoid va lve built
in the pump, the engine operation
ca nbe stopped by turningoff the
ignition switch.
SPECIFICATIONS
Number of Cy lind ers & Arran ge ment . .. . . .......... 4 in-line
Cy linder Bore & Stroke .............. .. (3.50 in. x 3.51in .)
Displa ce ment .(134.8 in .)
Comp ress ion Ratio . . ... 2 1. 0
CombustionChamber . . .
............ Sw irl Type
Firing Order
... . .. .. , .. . ..... 1-3·4-2
Injection Pump . . . . . , .. , .. . ... Bo sc h Distributor Type
Covernor ...• . , .. .. ..... M ec hanical (B uilt in Pump)
Lubrication Method ..... _. . . . . . . . .... Pressure F ee dType
Cooling Method .. . ........ . . _. . ... Fr es h Water Coo led
Co ld Starting Aid . . ... _ .. .... . _ ....... Glow Plug
El ec tri cal System Volta ge .......... , 12 Volts
Dry Weig ht of Engine(wI 2:1 Tr ans . ). . .. ... .. (62 7Ib s.)
Pow er Take-off . . .. VariousCrankshaft Pulleys
PERFORMANCE DATA
Maximum Tor que. . . .. .... ....(93.3 lb. 11 .)/2500 r.p.m.
One ho ur Rated Power Output
..... .35 PS /2000 r.p.m" 53PS/ 3000 r.p.m ., 66.5PS/ 4000 r.p.m.
Co ntinuious Rat ed Po wer Output
. .. 30PS/ 2000 r.p.m" 45PS/ 3000 r.p.m" 56.5 PS /4000 r.p.m.
Specific Fu el Co nsumption . ... .(0.4 13 Ib .l HP. hr )
Capacity 01Lubri ca nt . . . . ... .. .... .. (5.3 qt.)
Capacity of Coo lant. .. .. ...... . . .. .. . .. . .(10.5 qt.)
"Performance is ba se d on JI S standard atmospheric condition
(at m os pheric pr ess ur e 760mm H g, temp 20° C, humidity 65 %)
without cooling fan . Co nv ersion to BHP is to be made at I HP =
0.9859 PS.
STANDARD EQUIPMENT
Dir ec t driv e hydraulic tr ansm iss ion
Adjus
ta ble flex isolator engine mounts (1 8" on ce ntr e)
Fr es h water cooling sys tem
12 vo lt 55 ampere alternator
Thr ottl e, stop, and shift co ntr ol brackets
Glow plug cold weather starting aid
En
gi ne pre-wired at the f ac to ry with a single 8 pin conn ec tor
Operators manual
OPTIONAL EQUIPMENT
Vari ous accessory front pulleys
Water Inj ec t ed Exhaust Elbow
Hydro·H
us h Mulfler
Sea Wat er Strainer
Alt ernator Output Splitter
F
iv e function Electric Instrument Pan el including Hour Meter
and Tachometer
Short Profile Reduction Gears, Paragon
t)T Warner Transmissions
Front exhaust outlet for Vee
Driv e appli ca tions
CALL YOUR WESTERBEKE REPRESENTATIVE
OR CONTACT
THE . "
~ J. H. WESTERBEKE CORP.
Av on Industr ial Park , Avon , MA 02322, (617) 588·7700
J. larm., 1.1' -1 }II :;\11'rirlt''l1 m liSA Cnlwrrf(hl W. ' ~1t'rh .. · ~ .. , ("TIl Cable: Westcorp, Avon, Telex :92-4444
(
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