Installation manual
ENGINE
ADJUSTMENTS
GENERATOR
FREQUENCY
ADJUSTMENT
(HERTZ)
Once
the
diesel
generator set
has
been
placed
in
operation,
there
may
be adjustments required
for
engine
speed
(Hertz)
during
the
engine's break-in period
(first
50
hours)
or
after
this period. A
fio-load
voltage adjustment may
also
be
required
in
conjunction with
the
engine's speed adjustment.
These are
not
warrantable adjustments
as
they
relate
to
nor-
mal break-in
and
maintenance.
Frequency
is
a direct result
of
engine/generator speed,
as
indicated
by
the
following:
When the generator is
run
at
1800 rpm, the AC voltage
output frequency
is 60 Hertz.
When the generator
is
run
at
1500 rpm, the
AC
voltage
output frequency
is 50 Hertz.
Therefore
to
change
the
generator's
frequency,
the engine
speed
must
be
changed.
To
accomplish
the
frequency
change,
perform the
following:
1.
With
the engine stopped, connect
the
AC
output
leads
to
the
AC
terminal
block
in
accordance
with
the
AC
voltage
connections diagram specified
for
your
generator
set,
and
change
the
Hertz circuit connection
to
the
capacitor.
These connections
are
shown
in
the
GENERATOR
sec-
tion
of
this
manual.
A
WARNING:
Before
starting
the
engine
make
certain
that
everyone
Is
clear
of
moving
parts!
Keep
away
from
pulleys
and
belts
during
test
procedures.
2.
Start the engine
and
adjust
the
engine's speed
to
obtain
the
frequency
corresponding
to
the
voltage
selected
by
adjusting the stop bolts
and
positioning
the
throttle
arm
against these stop
bolts
to
either increase or decrease
engine no-load speed
to
adjust
the
Hertz produced.
3.
To
arrive at the
appropri~te
frequency,
either monitor
the
speed of
the
engine/generator
with
a
tachometer,
or
mon-
itor the
frequency
with a
frequency
meter,
the latter
method being the more precise of the
two.
THROTILE
CONTROL
LEVER
STOP
BOLT
ADJUSTMENT
SPEED
-ADJUSTMENT
FACTDRYSET
FUEL
RUN
SOLENOID
The
fuel
run
solenoid
is
mounted
in
a threaded
hole
on
the
engine's block just aft of
and
below
the
engine's
fuel
injec-
tion
pump.
Proceed
as
follows
when
installing a replacement
or
new
fuel
run
solenoid.
1.
Visual
access
to
the
fuel
injection pump's
fuel
rack
is
needed.
To
obtain
this,
remove
the
small square
side
cover
and
gasket just
below
the
fuel
injection
pump.
2.
Thread
the
locknut
onto
the solenoid
and
then
apply
a
small
amount of
Teflon
sealant
to
the
threads
on
the
solenoid.
3.
Thread
the
solenoid
into the hole
on
the engine
and
observe
the
solenoid plunger through the
cover
opening.
Allow
the
plunger to contact the
fuel
rack
and
move
fully
into
the
injection
pump.
Do
not
thread
further
so
as
to
push
the
plunger
into
the
solenoid..
4.
Back
the
solenoid
out
1/4
-
1/2
of a turn
and
secure it
in
position
with
the
locknut.
Locknut
Torque
Value
28.9
-
36.2
ft-lb
(4.0-
5.0
m-kg)
5.
Properly connect
the
three electrical
leads
from
the
sole-
noid.
Two
of
the
connections plug into the
engine
harness
and
the
third
grounds
to
the
engine block
at
an
adjacent
inboard
threaded
hole
with
an
8mm
bolt.
6.
Reassemble
the
cover
and
gasket
and
test
run
the
unit.
Make
certain
that
the
unit
stops
when
the
solenoid
is
de-energized.
FUEL
RI...
U
-
N
S
....
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h-
Stroke
0.3937:1:
0.019
in
(10:1:
0.5
mm)
Engines
& Generators
23