Westerbeke m-35B - UNIVERSAL MARINE ENGINES SPECIFICATIONS; General, Lubrication, Fuel, and Electrical Specifications; Cooling System and Tune-Up Specifications

UNIVERSAL MARINE ENGINES SPECIFICATIONS
Description
M·35B, M-48B,
M·50B
Description
M3·2DB,
M·25XPB
Displacement
M3·20B
M·25XPB
M·35B
M-48B
M·50B
Aspiration
Combustion Chamber
Bore & Stroke
M3·208
M·25XPB
M·35B
M-48B
M·50B
Compression Ratio
Firing Order
M3·20B, M·25XPB
M·35B ,M-48B, M·50B
Weight
M3·2DB
M·25XPB
M·35B
M-48B
M·50B
Direction of Rotation
GENERAL
Diesel, four-cycle, four-cylinder,
fresh water-cooled, Vertical, in-line
overhead valve mechanism.
Diesel, four-cycle, three-cylinder,
fresh water-cooled, Vertical, in-line
overhead valve mechanism.
Cubic Inches [Uters)
43.8 (7177)
61.2 [t .000)
81.47 [1.335)
91.41 [1.498)
113.32 [1.857)
Naturally aspirated
Spherical type, three vortex system
Inches [mm)
2.64 x 2.68 [67 x 68.0)
2.99 x 2.90 [76 x 73.6)
2.99 x 2.90 [76 x 73.6)
2.09 x 3.09 [78 x 78.4)
3.15 x 3.64 [80 x 92.4)
23:1
1 ·2·3
1·3·4·2
lbs [Kg] with transmission
241 [110.0)
295 [134.0)
352 [159.0)
356 [161.5)
529 [240.0)
Clockwise when viewed from the front
LUBRICATION SYSTEM
Description
Lube Oil filter
Lubrication Capacity
M3·2DB, M·25XPB
M·35B
M-48B
M·50B
Operating Oil Pressure
(engine hot)
Oil Grade
Forced lubrication by gear pump
Full flow,spin on filter element
Quarts [Uters)
4.0 [3.8)
4.0 [3.8)
4.5 [4.3)
10.5 [9.9)
42·64 psi (294 • 441 Kpa)
at rated speed
API Specification CF, CG-4, CH-4 or CI·4
SAE 15W-40 all season oil.
Transmission Specifications: Refer to the TRANSMISSION SECTION in this
manual.
COOLING SYSTEM
Description
Operating Temperature
Fresh Water Pump
Raw Water Pump
Raw Water Flow Rate
Coolant Capacity
M3·20B
M-25XPB
M-35B
M-48B
M-50B
Description-type
Fuel Nozzl, Type
Fuel Injection Pump
fuel
fuel
Lift Pump
Fresh water-cooled block, thermostatically-
controlled with heat exchanger.
150' -170' f (66' -77' C)
Centrifugal type, metal impeller, belt-driven.
Positive displacement, rubber impeller,
belt-driven.
8.0 GPM (30.2 litres) at 3000 rpm.
Quarts [Liters]
3.75 [3.5)
4.0 [3.8)
6.0 [5.6)
4.5 [4.3)
12.0 [11.4)
FUEL SYSTEM
Open flow, self priming
[Bosch) throftle type
In-line plunger type [Bosch)
No.2 diesel oil [centan, rating of 45 or higher)
12 volt 5' lift capacity solid stat,
ELECTRICAL SYSTEM
Starting Baftery
Baftery Capacity
DC Charging Alternator
Starting Aid
Starter
Alternator
12 Volt, H negative ground.
600 - 800 Cold Cranking Amps (CCA).
51 Amp rated, belt driv'n
Glow plugs, sheathed type
12 Volt. reduction gear
51 Amp with internal regulation,
set volts at 14.7 max.
TUNE-UP SPECIFICATIONS
Compression Pressure
[at 250 RPM)
M3-208, M·25XPB
M·35B, M-48B
M-50B
Injection Pressure
Engine TIming (spill)
Valve Clearance
(,ngine COLD)
M3·20B~
M·25XPB ]
M·35B r-
M-48B.-.J
M·50B----
412 - 469 PSI [2.84 - 3.23 MPal
512 - 540 PSI [35.3 - 37.2 MPa)
1991 PSI [13.73 MPa) static timed
18' -20' BTDC
Inches [mm)
0.0057 - 0.0072 IN [0.145 - 0.185mm[
0.0071· 0.0087 IN [0.18 - 0,22mmJ
MARINE POWER
•• Univorsal
44