EasyManua.ls Logo

Cessna 150M - Trim Tab Free-Play Inspection

Cessna 150M
358 pages
Save Page as PDF
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
7.
It
is
not
necessary
to
remove
retaining
rings
(11).
9-7B.
CLEANING, INSPECTION AND
REPAIR.
I
(Refer
to
figure
9
-2.
)
a.
DO
NOT
remove
bearing
(16)
from
threaded
rod
end
(15)
unless
replacement
of
bearing
is
necessary.
b.
Clean
all
component
parts,
except
bearing
(16),
by
washing
in
Stoddard
solvent
or
equivalent.
Do
not
clean
sealed
bearing
(16).
c.
Inspect
all
component
parts
for
obvious
indica-
tions
of
damage
such
as
stripped
threads,
cracks,
deep
nicks
and
dents.
d.
Check
bearings
(6
and
14),
screw
(9)
and
threaded
rod
end
(15)
for
excessive
wear
and
scoring.
Dimen-
sions
of
the
parts
are
as
follows:
I
BEARING (6)
INSIDE DIAMETER
INSIDE DIAMETER
BEARING (14)
INSIDE DIAMETER
SMALL HOLE
SMALL HOLE
LARGE HOLE
LARGE HOLE
THREADED ROD END
OUTSIDE DIAMETER
(SHANK)
SCREW
(9)
OUTSIDE
DIAMETER
NOTE
0.373"
MIN.
0.380"
MAX.
0.248"
MIN.
0.253"
MAX.
0.373"
MIN.
O.
380" MAX.
O.
242" MIN.
0.246"
MAX.
0.367"
MIN.
0.370"
MAX.
Relative
linear
movement
between
internal
threaded
screw
(9)
and
bearing
(14)
should
be
0.004
to
0.010
inch
at
room
temperature.
e.
Examine
threaded
rod
end
(15)
and
screw
(9)
for
damaged
threads
or
dirt
particles
that
may
impair
smooth
operation.
f.
Check
sprocket
(5)
for
broken,
Chipped
and/or
worn
teeth.
g.
Check
bearing
(16)
for
smoothness
of
operation.
h.
DO NOT
attempt
to
repair
damaged
or
worn
parts
of
the
actuator
assembly.
Discard
all
defective
items
and
install
new
parts
during
reassembly.
19-7C.
REASSEMBLY.
(Refer
to
figure
9-2.)
a.
Always
discard
the
following
items
and
install
new
parts
during
reassembly:
1.
Bearings
(6
and
14).
I 2.
Groov-Pins
(8
and
10).
3.
O-Ring
(13).
4.
Nuts
(2).
b.
During
reassembly,
lubricate
collars
(7),
screw
(9)
and
threaded
rod
end
(15)
in
accordance
with
Section
2.
c.
Press
sprocket
(5)
into
the
end
of
screw
(9),
I
align
groov-pin
holes
and
install
new
groov-pins
(8).
d.
Slip
bearing
(6)
and
collar
(7)
on
screw
(9)
and
slide
them
down
against
sprocket
(5).
e.
Insert
screw
(9),
with
assembled
parts,
into
housing
(12)
until
bearing
(6)
is
flush
with
the
end
of
housing.
NOTE
When
inserting
screw
(9)
into
housing
(12),
locate
the
sprocket
(5)
at
the
end
of
housing
which
is
farther
away
from
the
groove
for
retaining
ring
(11).
.The
bearings
(6
and
14)
are
not
pre-drilled
and
must
be
drilled
on
assembly.
The
groov
- •
pins
(10)
are
1/16
inch
in
diameter,
there-
fore,
requiring
a
1/16
(0.0625)
inch
drill.
f. With
bearing
(6)
flush
with
end
of
housing
(12),
carefully
drill
bearing
so
the
drill
will
emerge
from
the
hole
on
the
opposite
side
of
housing
(12).
DO
NOT
ENLARGE HOLES IN HOUSING.
g.
Press
new
groov-pins
(10)
into
pin
holes.
•
h.
Insert
collar
(7), new
O-ring
(13)
and
bearing
(14) into oppOSite
end
of
housing
(12).
i.
Complete
steps
"f"
and
"g"
for
bearing
(14).
j.
If
a new
bearing
(16)
is
required,
a new
bearing
may
be
pressed
into
the
boss.
Be
sure
force
bears
against
the
outer
race
of
bearing.
k.
Screw
the
threaded
rod
end
(15) into
screw
(9).
1.
Install
retaining
rings
(11),
if
they
were
re-
moved.
m.
Test
actuator
assembly
by
rotating
sprocket
(5)
with
fingers
while holding
threaded
rod
end
(15).
The
threaded
rod
end
should
travel
in
and
out
smooth-
ly
with
no
indication
of binding.
n.
Reinstall
actuator
assembly
in
accordance
with
paragraph
9-7.
9-7D.
TRIM TAB
FREE-PLAY
INSPECTION.
a.
Place
elevators
and
trim
tab
in
the
neutral
posi-
tion.
b.
Using
moderate
pressure,
move
the
trim
tab
trailing
edge
up
and
down
by
hand
to
check
free-play.
c.
A
maximum
of
.112"
(total
motion
up
and
down)
measured
at
the
trim
tab
trailing
edge
is
permissible.
d.
If
the
trim
tab
free-play
is
less
than
.112",
the
system
is
within
prescribed
limits.
e.
If
the
trim
tab
free-play
is
more
than
.112",
check
the
following
items
for
looseness
while
moving
the
trim
tab
up
and
down.
1.
Check
push-pull
tube
to
trim
tab
horn
assem-
bly
attachment
for
looseness.
2.
Check
push-pull
tube
to
actuator
assembly
threaded
rod
end
attachment
for
looseness.
3.
Check
actuator
assembly
threaded
rod
end
for
looseness
in
the
actuator
assembly.
f.
If
looseness
is
apparent
while
checking
steps
e-1
and
e-
2,
repair
by
installing
new
parts.
g.
If
looseness
is
apparent
while
checking
step
e-3,
refer
to
paragraphs
9-
6
through
9-7C.
Change
3
9-4A/(9-4B
blank)

Table of Contents

Related product manuals