Injection Pump TIming Adjustment (Spill TIming)
InCOlTeCt
fuel
injection timing will result in
hard
engine
starting and poor
engine
performance.
Adjust
the
in-
jection timing
as
follows:
NOTE:
The
shut-off lever (throttle)
must
be
in
the
RUN
position while
making
the
adjustment
or no
fuel
will flow to the
fuel
injection
pump.
Refer
to
the
cutaway
view of the fuel Injection
pump.
Remove
the cylinder
glow
plugs to allow the engine's
crankshaft
to
be
easBy
rotated
whDe
making this adjustment. Rotate the
engine
so
as
to
position
the
No.
1
piston
at approximately the beginning
of
its
compression stroke.
Remove
the high
pressure
injector
line
from
betweer1
the Injector pump and the No. 1 injector.
Carefully
remove the delivery
valve
holder from
the
pump
and
lift out the delivery
valve
spring. Carefully
reinstall
the delivery
valve
holder
and
tighten it in the
pump.
Reatlach the
No.
1 high pressure injector line to the delivery valve holder but do not connect it
to
the
No.
1
injector;
rather,
swing
the
line out away from the
engine
so
that during the timing check
fuel
will flow from
this
line and into a bucket and not on
the
engine.
Slowly
work
the priming lever on the
fuel
lift
pump.
Working this lever will
prime
the injector pump
and
fuel
will flaw
from
the
No.
1 injector
line.
Continue priming slowly and rotate the engine's crankshaft
in
its
nor-
mal direction of rotation (moving the No. 1 piston up on its compression
stroke).
Observe
the
fuel
flow from
the
No. 1 injector line
as
the crankshaft is slowly turned.
The
instant the
fuel
flow stops
marks
the
beginning
offuel
injection. Check that the
19"
BTDC
timing
mark
on the crankshaft pulley
is
in
alignment with the timing
pointer
on
the front cover.
The
injection timing
should
be
within ±
0.5°.
DELIVERY
VRLVE
HOLDER
DELIVERY
VALVE
SPRING
B R R R EL -=:::"":l:7Ttl
CONTROL
PINION
PLUNGER SPRING
:ni>-":"-'-"7.:~-
CO"
T R 0 L R A C I
Cutaway
View
of the
30B
THREE's
Fuel
Injection
Pump
"WIV'
WESTERBEKE
Engines & Generators
54
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