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NOTE
c.
Using a
clean
rag
dampened
with methyl ethyl
keytone,
thoroughly
clean
the
hole in
the
tab
horn,
the
area
After rigging
the elevator and the
elevator
tab
around
the
hole
and a new
P/N 96-610026-1
bushing,
control system, check
for
correct movement of
the
control surfaces
with respect
to
the
movement
of
d.
Scuff sand
the
contact surfaces of
the
bushing and
the controls. When the elevator
tab
control
is
the
tab
horn
and clean
the
area thoroughly again as specified
moved
toward
the "NOSE DOWN" position
the
in
step "c".
tab
should
move up.
e.
Wipe
off the
parts
again
with
a clean
rag
before the
solvent evaporates.
ELEVATOR
TRIM TAB END PLAY
INSPECTION
f.
Apply a thin coat of
adhesive,
EC2216
(PN
of
a.
Adjust
the
elevator trim tab
trailing
edge to align
with
Minnesota
Mining & Mfg. Co., St.
Paul, Minnesota)
or equiva-
the
elevator
control surface
trailing
edge.
(0°
position).
lent,
to the contact surfaces of both
the
bushing and the
tab
horn.
NOTE
g.
Join the
horn and
bushing and clamp together (use
The elevator must be
in
the
neutral position
for
care not to squeeze out all of
the
adhesive)
until
the
adhesive
this
inspection,
has
cured completely (approximately
24 hours).
b.
Carefully attach a dial
indicator
to
the
surface of the
h.
Lubricate
the
new 104-524056-3
grip bushing
with
elevator, outboard of
the
trim tab
in
line
with
the
control surface
MIL-G-23827 grease and
install
the grip
bushing
in
the
tab
trailing
edge.
horn
bushing.
c.
Zero
the
indicator while applying
3|bs.
load
perpen-
i.
Reinstall
the trim
tab and
lubricate
all pivotal points
dicular to the
tab
surface away from
the
dial
indicator
at the
with
MIL-G-23827 grease.
trailing edge aft of the trim
tab
horn.
d.
Without
moving the
dial indicator,
apply 3 lbs.
load
NOTE
perpendicular
to the
tab surface
toward the
indicator.
The
reading
on the dial
indicator is
the tab
free
play, and
it
should
If
the
rod end on the push
rod
assembly
is worn,
not exceed
0.084-inch.
the push rod assembly should be replaced.
When
connecting the tab push rod assembly to the tab
e.
If
the
free
play exceeds 0.084-inch,
inspect
all com-
horn,
tighten the castellated nut against the
rod
ponents of the
tab
actuation system to determine
the
cause,
end and turn the nut
to the
next castallation to
All worn parts should
be replaced
with new parts.
install
the
cotter key. The grip bushing
within
the
yoke of
the
rod
end should not
rotate.
f.
If
the
elevator
tab
push
rod
attach
holes in
the tab
horns
are
found
to be worn,
the trimtabs
may be
removed
and
the tab
horn repaired
as indicated
in
ELEVATOR TRIM TAB
For
Tab Horns
Of
.125-Inch
Thick Flat Steel Sheet
And
No
HORN
REPAIR in lieu
of replacing
the
complete
tab
assem-
Bushings.
blies.
a.
Drill and ream the existing
hole in the
tab
horn
to
NOTE
.3745/
.3760-inch
inside
diameter.
Elevators must be
removed from
the
airplane and
b.
Using a clean rag dampened
with methyl ethyl
be checked for static balance after accomplishing
keytone
or equivalent, clean the hole
in
the
tab
horn,
the
area
the
repair
procedures described in
ELEVATOR
around
the
hole
and a P/N 96-610026-3 bushing.
TRIM TAB HORN REPAIR.
c.
Scuff sand
the
contact surfaces of the
bushing and
ELEVATOR TRIM TAB HORN REPAIR.
the tab horn and clean the area thoroughly again as specified
in
step "b".
For Tab
Horns
With Brazed
In
Bushings.
d.
Wipe off
the
parts again
with
a clean
rag
before
the
a.
Carefully grind or spot face
the
brazed in bushing
solvent evaporates.
flush with
the sides of the tab horn.
e.
Apply a thin coat of adhesive (EC2216.
PN
of
b.
Drill and
ream
the
existing hole
to
.4995/.5010-inch
Minnesota Mining & Mfg. Co., St. Paul, Minnesota) to
the
inside
diameter-
contact surfaces of both
the
bushing and the tab
horn.
C1
3-6A
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Table of Contents
Troubleshooting
