Fuel Injection Limingl; Preparation; Inspection; Adjustment - Westerbeke 8.0KW - 60Hz EDT Operator's Manual

PREPARATION
FUEL INJECTION TIMING
ADJUSTMENT
a. Close the fuel shut-off valve.
h. Disconnect the No.1 fuel injection pipe from the
cylinder head and injection pump.
a. If the fuel injection timing is incorrect, change the
thickness of shims under the fuel injection pump. An
increase or decrease of the shims by O.1mm (0.004 in)
will vary the timing by 10. .
h. Increase the thickness of the shims to retard the timing
or decrease it to advance the timing.
c. Remove No.1 delivery valve holder from the injection
pump. Remove the delivery valve and spring from the
holder. Restore the delivery valve holder only to the
injection pump.
ADJUSTMENT RANGE: STANDARD
±
1.5
0
d.Connect the fuel injection pipe to the injection pump.
e. Hold the speed control lever in the low speed position.
(Generator) remove the fuel shut-off solenoid.
INSPECTION [Fuel Flow Method]
a. Open the fuel shut-off valve. Turn the hey switch to the
ON position and press preheat.
NOTE: Fuel will come from the injection pipe with high
pressure when the starter switch key
is
turned to ON position
if
the engine is equipped with an electric fuel pump. Direct
fuel flow into the container.
h. Slowly tum the crankshaft clockwise, looking at the
open end of the injection pipe. The instant fuel stops
coming out is the fuel injection timing.
NOTE: Tum the crankshaft in reverse direction.iust a little and
do step b again to verify the injection timing.
c. The fuel injection timing is correct if the IT mark on the
crankshaft pulley is aligned with the mark on the timing
gear case when fuel stops from the injection pipe.
FUEL INJECTION TIMING: BlDC 17' (STANDARD)
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Four kinds of shims are available in thicknesses
0.2mm (0.0079 in), 0.3mm (0.0118 in), O.4mm
(0.0157 in) and 0.8mm (0.0315 in). These shims have
no identification, measure the thickness of each shim
with calipers before using it.
A
CAUTION:
Apply sealant
to
both faces
of
each
shim
to
prevent oil leaks.
c. After the timing has been adjusted, make sure it is
correct.
d.Close the fuel filter valve and restore the delivery valve
and injection pipe to the original state.
TDC MARK
17' 19'
, f
20'
"""~~:":23'
ANGLE BY WHICH FUEL.
INJECTION TIMING
1< ANGLE BY WHICH FUEL
INJECTION TIMING
IS ADVANCED
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FUELFLOWS
AlTERNATE METHOD
In the fuel flowinethod, the delivery valve has to be removed.
As a result, there is a good chance for dirt particles to get
. inside the fuel injection pump. In this alternate method,
however, it is not necessary to remove the delivery valve.
a. Disconnect No.1 fuel injection pipe at the fuel
injection nozzle (cylinder head).
b. Prime the fuel system.
c. Slowly
tum
the crankshaft clockwise nntil fuel just
swells at the free end of the injection pipe and, at that
instan~
check the position of the IT mark with respect
to the mark on the gear case. This timing is
approximately I' retarded. Take this l' retardation
into account when making a shim adjustment.
Engin~$1f< Generators
28
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ADVANCED
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