Mooney M20K - 71-11-02 -Bottom Cowling; 71-12-02 -Top Cowling; Cowl Flap Rigging; Engine Cowl Flap (251000 Thru 25-TEA)

MOONEY
AIRCRAFT
CORPORATION
M20K
SERVICE
AND
MAINTENANCE
MANUAL
71-10-01
-ENGINE
COWUNG
CLEANING,
INSPECTION
a
REPAIR
A
*djusling
Rod
Clean
cowl
by
spraying
with
solvent
(PS~61
or
equivalent)
8
CG*I
Ibp
I)u~h
~ilh
and
wiping
dean.
After
deaning,
inspect
cowling
for
dents,
cracks
and loose
fasteners.
Repair
defects.
´•ngin
cowling
71-1190
-COWLING
REMOVAL
71-11-01
-TOP
COWUNG
i.
Remove
two
screws
from
top
cowling
on
inboard
side
of LH
3
RH
engine
cooling
air
intakes:
2.
Remove
one
screw
from
both
LH
3 RH
sideoftop
cowling,
forward
and
outboard.
Then
unlatch
seven
cam
locks
on
each
side.
3.
Unlatch
seven
cam
locks
on
the
aft
edge
of
the
top
cowling
just
ahead
ofwindshield.
4.
Carefully
lift
top
cowiing
off.
ENGINE
COWL
FLAP
RIGGING
(25-0001/25-0999
FIGURE
71 5
71-11-02
-BOTTOM
COWLING
i.
Disconnect
landing
light
wiring
connectors
near
71-12-02
-TOP
COWLING
firewall
(S/N
25-0001
thru
25-1224).
i. The
top
cowIing
is
installed h
re\Rrse
sequence
of
remoMl.
A.
Cut
ty-raps
secun’ng
insulating
tubes
overknife
disconnects.
71-13-00
ENGINE
COWL FLAPS
B. Slide
insulating
tubes
upwire
hamess
toward
firewaa
(25-0001
thru
25-0999)
The
cowl
flaps
are
activated
OPEN
and
CLOSED
by
a
C.
Disconnect
knife
disconnects
and
slide
scissors~dler
arm
mechanism
connected
to
the
cowl
insulating
tube
back
over
disconnect,
flaps.
A
push/pull
knob
on
the
console
is
used
to
open
or
2.
Disconnect
both
cowl
nap
control
rod
ends
at
close
cowl
flaps.
Cowl
flaps
are
either
OPEN
or
CLOSED
quick
disconnect
fitting
(1)
(Figure
715)
located
on
(two
positions)
while
airc~aft
is
on
the
ground; however,
cowl
flap
brackets
(S/N
25´•0001
thru
25-1224).
there
is
an
intermediate
"trail
position"
in
flight.
The
cowl
flaps
will
seek
an
aerodynamic
position
between
NOTE
CLOSED
and
OPEN
when
push/pull
knob
is
pulled
out
Reach
up
through
owl
flap
opening
to
This
can
be
used for
cooling
if
needed
dun~ng
cruise.
disconnect
cowl
flap
control
rods.
71-13-01
COWL
FLAP
RIGGING
3.
Unlatch
2
cam
locks
located
on
bottom
cowling
(25-0001
thru
25-0999)
between
cowl
flaps
(S/N
250001
thru
25-0999).
i.
Adjust
both
the
left
and
right
cowl
flaps
so that in
the
4.
Unlatch
8
remaining
cam
locks
(4
on
each
side)
closed
position
the
outboard
trailing
edges
are
flush
with
on
bottom
cowling
while
supporting
cowl.
the
lower
engine
cowling,
(Figure
715).
Maintain
.06
-.12
NOTE
in.
"cushion"
on
cowl
flap
control
at
the
instrument
panel
S/N
25-0001
thru
25-0999
have
two
cowl
flaps,
whe"
cowl
flaps
are closed.
The
scissors
should
be in
an
S/N
25-1000
thru
25-TEA
have
one
center
cowl
Ove’ce"ter
position
when
cowl
f~aps
are closed.
flap.
Camlock
locations
vary
slightly
from
NOTE
aircraft
with
two
cowl
flaps.
For
improved
cooling
during
summer
months
and
warm
temperature
operations,
cowl
flaps
5.
Carefully
lower
cowling
clear
of
spinner
and
remove from
aircraff.
may
be
rigged
to
have
a
.25
max
inch
gap
at
"B"
when
at
the
closed
position.
71-12-00-COWLING
INSTALLATION
71-14-00
ENGINE
COWL
FLAP
NOTE
(25-1000
thru
25-TEA)
Check
condition
of
tape
on
firewall
flange
The
single
cowl
flap
is
activated
OPEN
and
CLOSED
where
cowling
will
rest.
Polyethylene
tape,
P/N
by
an
idler
arm
connected
by
a
push-pull
rod
to
the
5421(UHMW)
(3M),
1
inch
wide
is
actuator
arm
on
a
geared
motor. A
cowl
tlap
switch,
recommended.
This
will
decrease
streaking
located
on
the
cockpit
console
directly
under
the
during
wet
weather
operations,
m’ucturecontrol,
activates
the
geared
motor.
The
switch
has
three
positions:
center
(OFF),
up (CLOSED)
and
71-12-01
-BOTTOM
COWLING
down
(OPEN).
The
cowl
flap
may
be
positioned
at
any
i. The
bottom
cowling
is
installed
"first"
in
reverse
angle
by
selecting
the
switch
either
up
or
down
until
the
sequence
of
removal.
desired
position,
as shown
on
the
position
indicator,
has
been
reached.
Then
return
switch
to
the
center
CAUTION
(OFF)
position.
Limit
switches,
which
are
not
Be
sure
landing
lights
and
cowl
flaps
are
adjustable,
prevent
the
cowl
flap
from
exceeding
the
full
connected
prior
to
installation
of
top
cowling.
open
or
full
closed
position.
71-10-01
17
OLDWILLWAYNE