Mooney M20M - Extension and Retraction; Gear System Operational Inspection

SERVICE AND
MAINTENANCE MANUAL
M20M
MOONEY
AIRCRAFT
CORPORATION
F,e
F:
Q
K
-;u
a
FWD
NOSE GEAR
RETRACTION TUBE 8
DOOR
ADJUSTMENT
POINTS
-FIG.32-6
NOSE GEAR RETRACTION
TUBE
ADJUSTMENT
6.
Push
RED
gear
safety
bypass
switch
and
hold
IN
POINTS FIGURE
32-5
to
partially
retract
gear.
3.
To
increase
or
decrease
nose
gear-up
travel in
7.
Pull
"GEAR
ACT"
circuit
breaker.
wheel
well,
adjust
eccentrics
on
trunnion
bearings
(J),
(Figure
32-6)
as
required.
8.
Check
nose
gear
overcenter
preload
as
follows:
CAUTION
A.
Measure
nose
gear
bungees.
(No
load)
Nose
gear
overcenter
preload
must
be
(Fig.
32-8).
re-checked
after
any
adjustment
to
nose
wheel
B.
Extend
gear
manually
(See
SECTION
32-30-07)
eccentrics.
stopping
extension
the
moment
the
GREEN
Gear
4.
Readjust
nose
gear
door
linkage
as
required
after
DO"
Light
comes
ON.
Gear switch
in
DOWN
position.
eccentrics
have been moved.
(Figure
32-6,
K.)
C.
Measure
nose
gear
bungee
springs
(Fig.32-8).
Deflection
from
zero
load condition
in
(A)
above
must
32-30-00
EXTENSION
AND
RETRACTION
be
.030
to
.070
inches
for
each
bungee.
32-30-01
GEAR SYSTEM OPERATIONAL
D.
If
spring
deflection
is
not
within
prescribed
limits,
INSPECTION
adjust
tube
rod
ends
(F)
(Figure
32-6)
in
increments
of
CAUTION
112
turns
as
required.
After
any
abnormal,
over
gross
or
hard
landing
9.
Check main
gear
overcenter
preload.
the
Gear
System Operational Inspection
should
be done.
A.
Place
rigging
tool
O
P/N
GSE
030007
(Figure
32-11)
on
retraction truss.
Hold
tool
stationary
by placing
1.
Raise
aircraft
on
jacks. (See
SECTION
7-10-00).
thumb
on
rear
end
of
tool
(S)
and
press
fonnrard.
2.
With
Master
Switch ON
and
gear
switch in UP
8.
Hold
10"
torque
wrench
(R)
and
place
thumb
on
position
apply
pressure
to
pitot
tube
(see
SECTION
wing
bottom;
apply
force until
joint
(4)
breaks
open
32-60-01).
Verify
gear
retraction
occurs
at
60
+/-5
slightly,
insert
shim
stock
(.005
.008
in,
thickness)
KIAS.
Allow
gear
to
raise
completely.
Check for
any
between
link
and
truss
at
(P).
Release
force
on
tire
interference
as
tire
enters
wheelwell.
wrench.
3.
Close
throttle
and confirm
gear
horn
sounds.
C. With
fingers
on
torque
wrench
and
thumb
on
4.
Inspect
gear
doors
for
proper
closing;
lower
gear.
wing
bottom
apply
force
on
wrench while
maintaining
a
5.
With
zero
airspeed
place
gear
switch in
UP
pulling
force onshim
stock.
Read
torque
value
on
wrench
at
the
exact
moment
the
shim
stock
pulls
position.
Gear horn should
sound
regardless
of
throttle
loose.
Torque
value
should be
250
to
280
inch
pounds.
position,
both
gear
position
lights
and
safety
bypass
switch
will
illuminate.
D.
Repeat
on
other
main
gear.
3250-00
4-99
OLDWILLWAYNE