Raytheon Beech Baron D55 - Alternator System

RBytheOn
Aircraft
company
BARON
55
AND 58
SHOP MANUAL
ALTERNATOR
SYSTEM
AL
TERNA
TOR
REMOVAL
(BELT
DRIVEN)
a.
Gain
access
to
the
engine
through
the
engine
compartment
door
on
the
right
side
of
the
engine.
b.
Removethe
upperenginecowling.
c.
Remove
the
small
access
plate
aftof
the
engine
compartment
door.
d.
Remove
the
air
filter
from the
induction
air box.
e.
From
inside
the
induction
air
box,
loosen
the
attaching
screws
securing
the
access
plate
above
the
altemator
positioning
bolt
and
remove
the
access
plate.
f.
Cut the
safety
wire
and
remove
the alternator
positioning
bolt.
g.
Disconnect
the
alternator
air
blast
tube.
h.
Remove
the
nut
on
the alternator
pivot
bolt.
i.
Position
the
alternator
inward
toward
the
center
of the
airplane enough
to
loosen
the
alternator
drive
belt;
then
remove
the
drive
belt.
CAUTION:
Make
sure
the
battery
master
switch is in the
off
position
before
removing
the
electrical
wires
at
the
alternator
The
output
terminal
of
the
alternator
is connected
directly
to
the
battery
through
the
battery
master
relay.
To
prevent
accidental
damage
to
the
wiring
harness
and
the
altemator,
the
battery
ground
cable
and all
external
power
should
be
disconnected.
j.
Disconnect
all
electrical
wiring
connections
at
the
alternator.
Tag
and
identify
all wires
to
facilitate
reinstallation.
k.
Remove
the
pivot
bolt and
washers.
i.
Remove
the
alternator
by
tilting
slightly
and
moving
outward.
AL
TERNA
TOR
INSTALLA
TION
(BEL
T
DRIVEN)
a.
Position
the
alternator
on
the
pivot
hinges
and install the
pivot
bolt and
washers.
CAUTION:
Ensure
that
the
alternator
wiring
is
properly
connected. Reverse
polarity
will
destroy
diodes
in
the
electrical
system.
Never
close
the
battery
master
switch until all
wiring
harness
connections
have been
made
and
properly
tightened.
It should be
remembered that
the altemator
is
polarized
every
time
the
battery
master
switch
is
turned
on;
therefore,
any
attempt
to
polarize
the
unit will
only damage
the
voltage
regulator
and
the
wiring
harness.
b.
Connect
all
electrical
wiring,
tagged
and
identified
during
the
removal
procedures.
c.
Position the
alternator
drive
belt
over
the alternator
drive
pulley
and
install
the alternator
positioning
bolt.
d.
Adjust
the
alternator
belt
tension
according
to
the
GENERATOR
AND
ALTERNATOR BELT
ADJUSTMENT
procedures
in
this
chapter.
Tighten
the
alternator
positioning
bolt
and
safety
wire.
e.
Install the
nut
on
the
pivot
bolt
and
tighten.
f.
Install the
alternator
air blast
tube.
Enl
SECTION
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