Mooney M20M - Page 155

MOONEY
AIRCRAFT
CORPORATION
M20M SERVICE
AND MAINTENANCE MANUAL
31.
Place
10
inch
torque
wrench
~R)
on
rigging
tool
FWD
(T)
as
shown
in
Fig.32-11
and
apply
an
unlodting
force
to
retraction
truss.
C
32.
When
joint
at
(4)
breaks
open
slightly,
insert
shim
stock
(.005
to
.008
in.
thickness)
between
retraction
link
and
truss
at
(P),
then
release
force
on
torque
wrench.
33.
While
applying
a
pulling
force
on
the
shim
stock,
exert
an
increasing
unlocking
force with
torque
wrench.
B
34.
Read
torque
wrench value
at
the
EXACT
moment
shim stock
pulls
loose.
35.
Repeat
steps
30
through
34
on
other main
landing
gear
leg.
36.
Use
adjusting
nuts
(Y)
on
retract
tubes
(V)
to
equalize
breakaway
torque
values within
10.0
inch Ibs.
Adjust
torque
to 250 to 280
inch Ibs
(ref.
Fig.
32-11).
37.
Turn Master Switch ON.
I
o
38.
RUN
GEAR
DOWN ELECTRICALLY AND
CHECK
THAT
TORQUE
VALUES DO NOT
EXCEED
325
INCH
POUNDS
USING
TORQUE
WRENCH/SHIM
STOCK
METHOD.
GEAR
WARNING ADJUSTMENT
1.
Check
that
landing
gear
waming light
circuit
MECHANICAL
UP STOP FIGURE
32-10
breaker
pushed
IN.
bulb
stringer
in
wheel
well. Make
certain
actuator
barrel
2´•
Check
that
landing
gear
actuator
circuit
breaker
is
does
not
contact
main
retract
bellcrank
in
UP
position.
pulled
OUT.
25.
Set
UP
limit switch
paddle (striker arm)
(H),
3.
Turn
Master Switch
ON.
Fig.32-7,
so
GEAR
UP
limit switch is
just
CLOSED
and
4.
Set
DOWN limit switch
paddle
(striker
arm)
(J),FIg.
RED
"GEAR UNSAFE"
light
is
OFF.
Secure striker
arm
32-7,
so
that
gear
down
limit
switch
is
just
CLOSED
in
position.
and
GREEN
"~EAR
DOWN"
light
is
ON.
Secure
striker
MECHANICAL UP STOP ADJUSTMENT
arm
in
position.
26.
Loosen
set
screw
(C) Fig.
32-10.
Adjust
5.
Tum Master Switch
OFF.
mechanical
up-stop
(A),Fig.
32-10,
for
a
clearance
of
.050 to .070
inches
at
main
retraction
truss
(B); tighten
NOTE
set
screw
(C).
The
main
gear
preload
torque
should
not
27.
Reinstall
assist
bungee
per
SECTION
32-10-06.
exceed
325
inch Ib.
using
the
torque
wrench/shim
stock
procedure
after
electrical
28.
Using
emergency
gear
extension,
move
gear
extension.
down
until GREEN
gear
down
light
JUST
illuminates.
29.
Turn Master Switch
-OFF.
The
main
landing
gear
system
is
now
rigged
for
the
gear
down
and locked condition.
NOTE
The
left
main
gear
truss
will
probably
lock
over
32-30-03
NOSE LANDING GEAR
RIGGING
center
first.
Continue to
slowly
lower
gear
PROCEDURE
manually
while
monitoring compression
of
bungee
spring
on
retraction tubes
(V)
Pig.
32-11.
1.
Check
the
eccentric
bushings
(J),
Fig.32-6,
on
If
spring
coils
are
fully compressed,
retract
tube
nose
gear
truss
assembly
to
be installed with
bolt
hole
(V)
must
be removed from
aircraft
for
at
the
upper
forward
position.
modification:
Dismantle
bungee portion
of
tube
(V);
remove
CAUTION
one
space
washer
O
and
reassemble.
The eccentric
bushings,
on
either
or
both
sides,
Re-install
modified
retraction
tube and
may
be countersunk and
have
a
flush
head
complete
above
overcenter
requirement.
The
screw
installed
to
allow clearance
of
nose
gear
removal
or
addition
of
spacer
washers
may
be
truss
during
retraction/extension
cycle.
This
required prior
to
obtaining
final
configuration
configuration
MUST
be
maintained
during
any
for the retraction
tube
01).
removal/installation
action for the
truss
or
eccentric
bushing.
30.
Place
rigging
tool
CT)
(Fig.32-11)
P/N
030007-100
on
retraction
truss
assembly
(G).
Hold
tool
2.
Adjust
nose
gear
retraction
tubes
(F),RS.
32-5,
so
stationary
by pushing
at
point
(S)
toward main
gear
they
can
be
reconnected
to
the main
retraction
leg.
bellcrank with
zero
preload.
4-99
32-30-03
OLDWILLWAYNE