Westerbeke 20B TWO Tehnical Manual

Preheat is depressed:
no
preheat.
Preheat is depressed:
fuel pump does not
operate.
Start
is depressed:
no
fuel delivery to injectors.
ENGINE TROUBLESHOOTING
possjble Cause
1. Connection or
switch.
2. Preheat solenoid.
3. Glow plugs are
faulty.
1. Faulty connections
or
bad pump.
1. Fuel solenoid or
connections
to it are
faulty.
2. Voltage problem.
3. Shut off lever.
85
..
Verifjcatjon/Correctjon
1. Check for 12 volts at the
PREHEAT switch and at the
S terminal on the preheat
solenoid.
2. No activation with 12 volts
at the
S terminal. Tap solenoid
with a mallet to determine if
it
is stuck internally. Solenoid
should produce a click
when
activated and deactivated.
3. Twelve volts is present at
the glow plugs.
Remove each
plug and check the resistance
of the plugs with an ohmmeter.
(1.5 - 2.2 ohm.)
1. Check for 12 volts at the
fuel pump connections.
If 12 volts are present, the
pump
is possibly faulty.
Tap pump with a mallet.
Pump's plunger may be stuck.
Check for contamination
which will affect the
pump.
1. Check for 12 volts at lead
positive terminal at the back
of the
fuel solenoid when the
PREHEAT button is depressed.
Twelve volts with no activation
indicates a faulty solenoid.
2. Less than 10 volts found at the
lead terminal on the solenoid
will not properly activate the
solenoid and will cause a failure.
Check for low batteries or voltage
loss in small electrical wiring or
corroded connections.
3. Check that shut off lever is
returned to the run position.
Westerbeke Engines

Westerbeke 20B TWO Specifications

General

Brand	Westerbeke
Model	20B TWO
Category	Engine
Language	English