Mooney M20R - Gear Warning Adjustment; Mechanical up Stop Adjustment; Nose Landing Gear Rigging Procedure

MOONEY
AIRCRAFT
CORPORATION
M20R
SERVICE
AND
MAINTENANCE
MANUAL
34.
Repeat
steps
30
through
34
on
other
main
land-
RN
D
ing
gear
leg.
equalize
breakaway torq_u_e_
valueswithin
10.0
inch
Ibs.
35.
Use
adjusting
nuts
C~
on
retract
tubes
01)
to
Adjust
torque
to
250
to
280
inch
Ibs.
36.
Turn
Master
Switch
ON.
37.
RUN
GEAR
DOWN
ELECTRICALLY
AND
CHECK
THAT
TORQUE
VALUES
DO
NOT
U(CEED
325
INCH
POUNDS
USING
TORQUE
WRENCHI
\’t~
SHIM
STOCK
METHOD.
r I
GEAR
WARNING
ADJUSTMENT
1.
Check
that
landing
gear
warning
light
circuit
breaker
pushed
IN.
2.
Check
that
landing
gear
actuator
circuit
breaker
is
pulled
OUT.
3.
Turn
Master
Switch
ON.
4.
Set
DOWN
limit
switch
paddle
(striker
arm)
(J),FIg.
32-7,
so
that
gear
down
limit
switch
is
just
CLOSED
and
GREEN
"GEAR
DOWN"
light
is
ON.
Se-
cure
striker arm
in
position.
5. Turn
Master
Switch
OFF.
NOTE
The
main
gear
preload
torque
should
not
exceed
325
inch
Ib.
using
the
torque
wrench/shim
stock
MECHANICAL
UP
STOP
FIGURE
32-10
procedure
after
electrical
extension.
The
main
landing
gear
system
is
now
rigged
for
the
MECHANICAL
UP
STOP
ADJUSTMENT
gear
down
and
locked
condition.
25.
Loosen
set
screw
(C)
Fig.
32-10.
Adjust
mechani-
32-30-03
NOSE
LANDING
GEAR
RIGGING
cal
up-stop
(A),
Fig.
32-10,
for
a
clearance
of.050
to
.070
PROCEDURE
inches
at
main
retraction
truss
(B);
tighten
set
screw
(C).
26.
Reinstall
assist
bungee
per
Section
32-10-06.
1.
Check
the
eccentric
bushings
(J), Fig.
32-6,
on
gear
truss
assembly
to
be
installed
with
bolt
hole
in the
27.
Using
emergency
gear
extension,
move
gear
upper
forward
position.
down
until
GREEN
gear
down
light
JUST
illuminates.
28.
Turn
Master
Switch
OFF.
CAUTION
The
eccentric
bushing,
on
either or
both
sides,
NOTE
may
be
countersunk
and
have a
flush
head
screw
The
left
main
gear
truss
will
probably
lock
over
installed
to
allow
clearance
of
nose
gear
truss
center
first.
Continue
to
slowly
lower
gear
during
retraction/extension
cycle.
This
manually
while
monitoring
comression
ofbungee
configuration
MUST
be
maintained
dunng
any
spnng
on
retraction
tubes
(V)
Fig.
32-11,
removal/installation
action
for
the
truss or
If
spnng
coils
are
fully
compressed,
retract
tube
eccentric
bushing.
(V)
must
be
removed
from
aircraft
for
modification:
2.
Adjust
nose
gear
retraction
tubes
(F),
Fig.
32-5,
so
Dismantle
bungee
portion
of
tube
(V);
remove
one
they
can
be
reconnected
to
the
main
retraction
bell-
space
washer
(2)
and
reassemble.
Re-install
crank
with
zero
preload.
modified
retraction
tube
and
complete
above
overcenter
requirement.
The
removal
or
addition
NOTE
of
spacer
washers
may
be
required
prior
to
The
eccentric
bushings
may
require
rotating
to
a
obtaining
final
configuration
for
the
retraction
tube
new
position
in
order
to
meet
zero
preload
(V).
condition.
29.
Place
rigging
tool
O
(Fig.
32-11)
P/N
030007-100
3. Measure
nose
gear
bungees
dimension
(P),
Fig.
on
retraction
truss
assembly
(G).
Hold
tool
stationary
by
32-8,
and
record
for
future
reference.
pushing
at
point
(S)
toward
main
gear
leg.
4.
Push
landing
gear
actuator
C/B
IN.
30.
Place
10
inch
torque
wrench
(R)
on
rigging
tool
O
5.
Place
landing
gear
switch
in the
UP
position.
as
shown
in
Fig.
32-11
and
apply
an
unlocking
force
to
retraction
truss.
31.
When
joint
at
(4)
breaks
open
slig
htly,
insert
shim
stock
(.005
to
.008
in.
thickness)
between
retraction
link
and
truss
at
(P),
then
release
force
on
torque
wrench.
32.
While
applying
a
pulling
force
on
the
shim
stock,
exert
an
increasing
unlocking
terce
with
torque
wrench.
33.
Read
torque
wrench
value
at
the
EXACT
moment
shim
stock
pulls
loose.
REV.
10-98
32-30-03
Island Enterprises