Mooney M20M - Main Gear Door Rigging; Inboard Door Rigging

SERVICE
AND
MAINTENANCE
MANUAL
M20M
MOONEY
AIRCRAFT
CORPORATION
32-10-02
MAIN GEAR
INSTALLATION
any
reason
the
following
rigging
procedures
should be
1.
Lubricate wheel
bearings,
retraction
linkage,
and
used when
reinstalling
them:
fore
and
aft
trunnion
bearings
prior
to
installation
at
A.
Disconnect outboard
doors
at
forward and aft
lubrication
fittings
!9).
Refer
to
SECTION
5-20-07
for
linkages
(B)(Fig.32-2).
recommended lubncants.
B. Disconnect
inboard
doors
at
forward
linkage
and
2.
Installation of
main
gear
is
the
exact
reversal of
springs
(A)
(Fig.32-3).
the
main
gear
removal
procedure.
C. Raise
gear
electrically
to
the
full UP
position.
NOTE
D.
Forward
leading
edge
and aft
trailing
edge
of the
Torque
510073-001,
-003
or
-005
bolt
to
270
to
mid-gear
door should be
tight
against
the
wing
skin.
300
in.
Ibs.
Spacers (A) (Figure
32-2)
should
be
added
or
removed
3.
Check fore
and aft
movement
of
gear
in
bearing
as
required
to
obtain
a
good
fit with
no
binding
or
blocks.
Maximum allowable
movement
is
.020
in. Shim
distortion
with
the
gear
in
the UP
position.
AN960-10
or
excess
by
inserting
maximum of
two
shims
(6)
AN960-416
washers
may
be used
as
spacers.
between the
two
rear
blocks.
3.
Reconnect outboard
and
mid-gear
doors and
4.
Temporarily
attach
gear
door link
rods
to
gear
leg
check that doors
are
faired
with
wing
skin/wheel
well
brackets.
opening
and that there
is
no
binding
or
distortion where
links
attach to
door.
Adjust
linkage/spacers
if
required.
5.
Retract
gear
while
checking
for
binding
in
door
(Figure
32-2)
Extend
gear
to
adjust,
then
retract
to
linkage
and
proper
contact
of
gear
door
edges
with
check
adjustment.
wing.
DO
NOT
make final
gear
door
adjustments
until
gear
has
been
rigged (Ref.
32-30-02).
4.
Check
main
gear
overcenter
preload
torque
for
proper
values.
Re-rig
entire
landing
gear
system,
if
32-10-03
MAIN
GEAR
DOOR
RIGGING
necessary
(See
SECTION
32-30-02
32-30-03).
1.
Raise
aircraft
on
jacks.
See
SECTION
7-10-00.
32-10-04
INBOARD
DOOR
RIGGING
1.
Adjust
inboard door link
to
close doors with "O"
gap.
Doors
must
be closed
with
gear
extended
and
retracted. If door
is
not
closed in
both
positions
refer
to
e~.´•.-.
-..=L~
landing
Qear
rigging
procedures
in
SECTION
32-30-02.
Any adjustment
to
rod
end
on
main
retract
tube
(L)
(Fig.
32-7)
and
rod
end
on
retract
tube
(V)
(Fig.
32-11)
is
at
a
2
to 1
ratio,
respectively;
this
adjustment
will
change
rigging
values.
Re-check
preload
values.
EXAMPLE:
If
the inboard
gear
door
is
open
a
small
amount
when
landing gearis
down,
but
closed
when
I;
gear
is UP.
Adjust
by
turning
retract
tube
(V)
rod
end~UII:l
turn.
Lbl
1/2
turn,
and
retract
tube
(L) (Fig.
32-7)
rod end
EXAMPLE:
If the
inboard
gear
door is
closed
with
/7
1
landing
gear
in the
DOWN
position,
but
open
a
small
amount
with
landing
gear
in
the
UP
position.
Adjust by
tuming
retract
tube
(Fig.32-11)
rod end
PUI
1/2
I1
turn,
and
retract
tube
(Fig.32-7)
rod end
1
tum.
2.
Tighten jamb
nuts
and
reconnect
springs
on
inboard
gear
door
bellcrank
(A) (Fig.32-3).
\ii
i:
rl
’I
NoT,
II
i.
Do
not
rig
doors shut
more
than
necessary
as
this
may
resutt in
higher
actuator
loads than
necessary.
3.
Adjust
outboard door
link
to
close
all
gap
at
.I 1;
leading
edge
of
door. If
door is
rigged
too
tight,
skin
will be under
stress
(concave)
at
the
point
where the
linkage
is
attached
to
door. It could also
cause
mid
MID-GEAR DOOR
ADJUSTMENT
POINTS
and inboard
doors
to
gap
open.
FIGURE
32-2
4.
Cycle
gear
manually
and
electrically
while
inspecting
for clearances.
Re-check
landing
gear
NOTE
system
rigging
values.
Gear
system
must
be
properly
rigged
prior
to
gear
door
rigging,
see
SECTION
32-30-01.
2.
Normally
once
the
doors
are
installed
at
the
factory
no
further
adjustment
should
be
required.
However,
should the
mid-gear
doors
be
removedfor
32-10-02
4-99
OLDWILLWAYNE