Westerbeke 5.0KW BCD - Page 28

STARTER MOTOR
A WARNING: When performing these procedures,
position yourself safely away from the moving parts of
the engine in case the engine starts-up. Also warn
other crew members of the danger.
IGNITION
TERMINAL
~~
''-\'''.'II'''~'~
(+) POSITIVE
,TERMINAL
..---/
~....----(M) TERMINAL
Test again by jumping the two large tenninal studs. Hold the
screwdriver blade firmly between the studs. Do not allow the
screwdriver blade to touch the solenoid or starter casing, this
would cause a short.
A WARNING: There will be arching as the full
starting current should be flowing thru the blade of
the screwdriver.
If the starter spins, the solenoid is faulty.
If the starter fails to spin, the motor is probably faulty.
If no arching occurred, there is no juice reaching the
solenoid.
NOTE: Starter motors are either inertia type or pre-engaged.
In the pre-engaged model, the solenoid also moves an arm
that engages the starter motor to the flywheel
of the engine.
using a screwdriver to bypass the solenoid on such a starter
will run the motor without engaging the flywheel. Turn the
starter switch on to provide
power to the solenoid. Hopefully
it will create enough magnetic field
for the arm to move even
though the contacts inside the solenoid are bad.
EMERGENCY START
Corrosion to the starter brushes andlor the solenoid contacts
can cause the sporadic problem of the engine starting one
time but'not another. If corrosion is the' problem, the starter
will need
to be rebuilt.
It is however, sometimes possible to get started by taping the
starter lightly with a small
hammer.
With the battery switch off and no ignition,. tap lightly on the
starter/solenoid casing
as shown, then try to start the engine.
CAREFULLY NOT TO HIT /'
FITTINGS OR WIRE CONNECTIONS
I
\
TAP LIGHTLY WHERE
, INDICATED
If that fails, tum the battery switch on and have a crew
member tum the ignition on and off rapidly as you tap again
with the hammer., This may loosen the brushes and allow
contact to start the engine. When you reach a repair facility,
the starter will need to be repaired.
SERVICE
WESTERBEKE uses a standard starter motor which can be
serviced or rebuilt at
any starter motor automotive service
center,
If replacing the starter motor, make certain the new motor is
certified for marine use. Automotive starters do not meet
USCG standards. If in doubt, contact your WESTERBEKE
dealer.
TO REMOVE FOR SERVICE
1. Disconnect the negative battery cable.
2. If necessary, remove any components to gain full access
to the starter motor.
3. Label and di!>connect the wiring from the starter. (Do not
allow wires to touch, tape over the terminals).
4. Remove the starter mounting bolts.
5. Remove the starter from the engine. In some cases the
starter will have to be turned to a different angle to clear
obstructions,
Engines & Generators
22