Mooney M20K - Extension and Retraction

SERVICE
AND
MAINTENANCE
MANUAL M20K
MOONEY AIRCRAFT CORPORATION
32-20-03
NOSE GEAR
DOOR RIGGING
6.
Push
RED
gear
safety
bypass
switch and hold
IN
to
partially
retract
gear.
Pull
"GEAR
ACT" circuit
1.
Raise
aircraft
on
jacks.
(Refer
to
Section
7-10-00.)
breaker.
7.
Check
nose
gear
overcenter
preload
as
follows:
NOTE
k
Measure
nose
gear
bungees
(Figure 32-6).
Gear
system
must
be
properly
rigged prior
to
gear
B.
Extend
gear
manually (See
Section
32-30-04)
door
rigging,
see
Section
32-30-02.
stopping
extension
the
moment
the
green
Gear
Down
Light
comes on.
Gear
switch
in
DOWN
position.
2.
Adjust
gear
door
link
rods
(H)
and
(J) (Figure
32-
C.
Measure
nose
gear
bungee
springs
(Fig.32-6).
3)
to
obtain
proper
door fit when
closed.
Deflection from
zero
load condition
in
(A)
above
must
3.
To
increase
or
decrease
nose
gear-up
travel in
be.030
to
.070
inches
for each
bungee.
wheel
well,
adjust
eccentrics
on
trunnion
bean’ngs
(J),
D. Ii
spring
deflection is not
within
prescribed
(Figure 32-4)
as
required.
limits,
adjust
tube
rod ends
(Figure
32-4
(F))
in
incre-
ments
of
1/2
turns
as
required.
CAUTION
Nose
gear
overcenter
preload
must
be
rechecked
8.
Check
main
gear
overcenter
prdoad
as
follows:
after
any
adjustment
to
nose
wheel
eccentfics.
A Place
n‘gging
tool
Cr)
PIN
GSE
030007
(Figure
32-9)
on
retraction truss.
Hold the
tool
stationary
by
4.
Readjust
nose
gear
door
linkage
as
required
after
placing
thumb
on
rear
end
of
tool
(S)
and
press
for-
eccentrics have
been
moved.
(Figure
32-4,
IC)
ward.
B.
Hold
10"
torque
wrench
(R)
and
place
thumb
32-30-00
EXTENSION
AND
RETRACTION
on
wing
bottom;
apply
force
until
joint
(4)
breaks
open
32-30-01
GEAR
SYSTEM
OPERATIONAL
slightly,
insert
shim
stock
(.005
.008
in.
thickness)
be-
INSPECTION
tween
link and
truss at
(P).
Release
force
on
wrench.
C.
With
fingers
on
torque
wrench
and
thumb
on
1.
Raise aircraft
on
jacks.
(See
Section
7-10-00).
wing
bottom
apply
force
on
wrench
while
maintaining
a
2.
With Master
Switch ON
and
gear
switch
in
UP
pulling
force
on
shim
stock.
Read
torque
value
on
position, apply
pressure
to
pitot
tube
(see
Section
32-
wrench
at
the
exact
moment
the
shim
stock
pulls
60-01).
Verify
gear
retraction
occurs
at
75
MPH
5
MPH
(55
+7/-4
KIAS).
Allow
gear
to
raise
completely.
loose.
Torque
value
should
be
250
to
280
inch
pounds.
Check
for
any
tire
interference
as
tire
enters
whee~well.
D.
Repeat
on
other
main
gear.
3.
Close
throttle
and
confirm
gear
hom sounds.
E.
If
preload
is not
within
prescribed
limits
4.
Inspect
gear
doors for
proper
closing;
lower
gear.
proceed
to
applicable
S/N,
Main
Landing
Gear
Rigging
5.
With
zero
airspeed
place
gear
switch
in
UP
posi-
procedures
in
Section
323101or
32-31-02.
tion.
Gear
horn
should sound
regardless
of throttle
F. If main
gear
preload
needs
readjusting,
the
position,
both
gear
position
lights
and
safety
bypass
nose
gear
bungees
should
be
rechecked
per
7,
(C)
switch
will illuminate.
above
(Fig.
32-6).
I ndlf
o,
´•r
E
oo
MAIN GEAR
RETRACTION TUBE
ADJUSTMENT
POINTS
FIGURE
32 5
32-20-03
OLDWILLWAYNE