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GENERAL
COMPONENT TESTING
NOTE: WESTERBEKE recommends that the following engine
testing adjustments be perjonned
by a competent technician.
TAP THE GROUND
CONNECTION TO
THE TERMINAL
All DC voltage measurements are made to the engine battery
negative ground point unless specified otherwise. In making
test measurements, make sure that a good ground for the
meter is established, preferably the point where the negative
battery is connected to the engine. Battery positive voltage is
indicated as B+ and should measure no less than
JI.5
volts.
o
RELAY SHOULD
_ _ _
~o~o
"CLICK" ON.
AC voltage measurements should be made with a true
RMS AC meter to insure measurement accuracy.
GROUND AND 8(+)
CONNECTIONS
---.• ",.
RELAYS
The relays used in the control system have coils which are
polarized by the fact that they have internal free wheeling
suppression diodes across them. Relay coil terminal 86 must
be maintained (+), terminal 85(-). The relay coil is rated 12V
DC, and the coil resistance is typically 85 ohms. With B+ on
tenninal 86, direct grounding of tenninal 85 is pennissible
for testing purposes.
RELAYS
RELAY
TERMINALS
REMOVE THIS
RELAY CONNECTOR
~
WESTERBEKE
Engines
& Generators
33
TO B(+)
TESTING THE RELAY
TERMINALS
TESTING COIL RESISTANCE
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