Westerbeke 20B TWO Tehnical Manual

208 TWO MARINE DIESEL SYSTEM SPECIFICATIONS
Oil Filter
PN 036918
Sump Capacity (including filter)
Operating
Oil Pressure (engine hot)
Oil Grade
ELECTRICAL SYSTEM
Starting Battery
Battery Capacity
Starter
PN 034552
DC No-Load Current
DC Cranking Current
DC Alternator
PN 030594
TRANSMISSION
General (JS Transmission)
Standard Gear Ratio
Propeller Shaft Direction of Rotation
Propeller Recommendations
(using JS transmission 2.47:1 reduction)
Lubricating
Oil Grade
SAE Grade
Transmission Sump Capacity
Full flow, paper element, spin-on type.
3.0 U.S. qts (2.9 liters)
15 - 45 psi (1.0 - 3.1 kg/cm
2
)
API SPECIFICATION OF CF OR CG-4
12-volt, 26 A-H, (-) negative ground
(recommended)
(35 A-H in cold areas)
90 -125 (ampere-hours)
12-volt, 1.2 t<MI, reduction type,
solenoid-mounted.
100 amp (max.) at 11.5 volts (3000 rpm, min.).
125 amps at 10 volts (805 rpm, min.) (engine cold).
12 volt DC, 50 amps
Case hardened helical gears with an
intermediate reverse gear. Reversing
out by a servo double disc system.
2.47:1
Right handed - standard transmission.
150 x 10 P - 2 blade or 15 D x 8 P - 3 blade.
Propeller should allow the engine to reach its
full rated rpm (3600 + 000 - 100) at full open
throttle while underway.
API SPECIFICATION OF CF OR CG-4
SAE 20W/20 or SAE 30 exclusively. (Do not
mix grades of
oil or use multigrade oils!)
1 qt
(1 liter)
11 Westerbeke Engines

Westerbeke 20B TWO Specifications

General

Brand	Westerbeke
Model	20B TWO
Category	Engine
Language	English