Raytheon Beech Baron E55 - Page 682

Ray~heon
Aircraft
tompany
BARON
55
AND
58
SHOP MANUAL
Chart
33
I
TROUBLESHOOTING
IGNITION
SYSTEM
INDICATION
PROBABLE
CAUSE
REMARKS
1.
Hard
starting.
a.
Low
voltage
at
vibrator
input,
a.
Measure
voltage
between
vibrator
terminal
marked
in and the
ground
I
terminal
while
operating
starter.
A
reading
of
at
least
28.5
volts
must
be
obtained.
b.
Inoperative
or
defective
vibrator.
b. If
voltage
is
adequate,
listen
for
buzzing
of vibrator
during
starting.
If
no
buzzing
is
heard,
either
the
vibrator
is
defective
or
the
circuit
from
the
Output
terminal
on
the
vibrator
to
the
retard
(dual
breaker)
magneto
is
open.
Check
both Switch
and Retard
circuits.
Also
check
for
good
electrical
ground.
c.
Retard
breaker
in
retard
(dual
c.
Retard
points
may
not
be
closing
breaker)
magneto
not
operating
due
to
wrong
adjustment,
or
may
not
electrically.
Engine
may
kick
back
be
electrically
connected
in the
during
cranking
due
to
advance
circuit due
to
poor
connection.
timing
of
ignition.
Inspect
retard
points
to
see
if
they
close. Check
for
proper
contact
at
the
SWITCH
and
RETARD
terminals
of
retard
(dual
breaker)
magneto
and
at
the
vibrator.
Check
wiring.
d.
Vibrator-magneto
combination
not
d.
Turn
engine
in
proper
direction
of
putting-out electrically.
rotation until retard
points just
open
on
No. 1
cylinder
position.
Remove
in-put
connection
from
starter
to
prevent engine turning,
and
while
holding
No. 1
plug
lead
5/16
in.
from
ground,
energize
vibrator
by turning
switch
to
start.
Plug
lead
should
throw
a
5/16 in,
spark.
If
spark
is
i
weak
or
missing
try
a
new
vibrator.
If
this
does
not correct
trouble
remove
magneto
and check
for
improper
internal
timing
or
improperly
meshed
distributor
gears.
e.
Magneto
improperly
timed
to
e.
Check
magneto-to-engine
timing.
engine.
f. Advance
breaker out
of
f.
Readjust
breaker and
check
for
adjustment,
correct
gap
tolerance.
g.
Retard
points
opening
too
late.
g.
Check
timing
of
retard
points.
E21
SECTION
13Page
85