Magnetic Pick-Up Coil; Fuel Pressure Pump - Westerbeke 6.5 MCG Service Manual

COMPONENT TESTING .
SPEED SENSOR {Hall Effect)
Check the Speed Sensors AC voltage output while cranking.
The normal voltage is listed below.
Speed Sensor Test Valves Voltage
(while cranking) 5.0, 6.5 Kw MCG - 1.33 VAC
If
the AC voltage output is.not present or lower
than
shown and coif resistance values are correct, 'check for
contaminapon on the
tip
of the sensor and/or on the fiat
· knobs on the crank shaft pulley.
Test the Speed Sensors coil windings in a static mode.
Resistance values are shown below. Coil windings resistance
values being lower or not present indicate a damaged/faulty
sensor. Replace.
Resistance Values: Red ·Black 26 Ohin
While ··Black 21 Ohm
Installing the Sensor: Position a flat knob on crank shaft
plllley below the threaded opening for the sensor. Thread the
sensor
in until
its
tip contacts the flat of the knob. Then back
it out 2 turns and secure it with the jam nut.
TESTING THE FUEL PRESSURE PUMP
Testing the fuel pumps
Th
a static mode. Check for integrity
of the pump winding. Unplug each pump from the engine
harness and check the resistance value of the winding.
The lower pressure pump should produce 8-10 psi of pressure
when operating measured at the Schrader valve on
the fuel
cell. The high pressure pump should produce
35-40
psi of
pressure when operating measured at the Schrader valve on
the throttle body.
Fuel Pump Resistance
High Pressure 8.0 -12.0 Ohms
Low Pressure 1.5-3.0 Ohms
There should be no continuity between the metal case and
either tem1inal of the plug connector.
/
I
/"'-
/
FUEL MODULE
TESTING FUEL
PUMPS
Engines
&
Generators
55
-~~~
~~
I