Piper Cherokee Six - Page 340

PIPER CHEROKEE
SIX SERVICE
MANUAL
3. Attach the upper
link to the swivel stud of the
support fitting and secure with
bolt,
bushing, washer,
nut and cotter pin
(25).
4.
The actuating cylinder rod end bearing
(46) and lower side brace link
(33) may
be attached respectively
to the retraction fitting (21) and
strut housing during the
adjustment of the landing gear.
d. Ascertain that the landing
gear is lubricated per Lubrication
Chart, Section II.
e. Check adjustment of landing gear per Paragraph 6A-25.
f.
Check alignment of the
wheel per Paragraph
6A-26.
g.
Install the access plate on the underside
of the wing and- remove the airplane
from
jacks.
6A-25.
ADJUSTMENT
OF
MAIN LANDING
GEAR.
a. Place
the airplane
on jacks.
b. Level
the airplane
laterally
and longitudinally.
(Refer
to Leveling,
Section
II.)
c. Disconnect
the gear
door actuating
rods at either
the door
or the housing,
as desired,
by
removing
the
rod attachment
bolt. Secure
the
door
out of
the way.
d. Adjust
rod end
on upper side
brace link
with no load
on wheels,
to obtain 90
degree
angle
between
wheel centerline
and
level floor
line on outboard
side
of gear.
e.
Check that
the rod
end has
sufficient
thread
engagement
in the
end bearing,
align
the
flat sides
of the bearing
casting
with
the flat side
of the bearing
and
tighten
the jam nut.
f. Adjust
the turnbuckle
of the downlock
mechanism
by first
ascertaining
that the gear
is down
and
locked, and
then move
the retraction
fitting outboard
until
it contacts
the stop
slot
of the
side brace
link.
Hold
the fitting
in this
position
and
turn the
turnbuckle
barrel
until
the downlock
hooks
make
contact
with the
lock pin.
Safety
the turnbuckle.
g.
For easier
adjustment
of the
downlock
limit
switch,
it may
be
set at this
time
as
explained
in Paragraph
6A-34.
h.
Retract
and
extend
the gear
manually
several
times
to
ascertain
that
the side
brace
link falls
through
center;
the downlock
hook
falls into
position
and there
is no binding
of
the gear
assembly.
i. The
gear
should
be adjusted
in
the up
position
to allow
the
gear fork
to press
lightly
into
the rubber
bumper
pad on
the wing.
The adjustment
may
be accomplished
as follows:
NOTE
If it requires
less than
.025
of
an inch
to move
the
gear
into
the correct
adjustment,
Steps
2 and
6 thru
8 need
only
be
followed.
1.
Ascertain
that
the rod
end
bearing
of the
actuating
cylinder
is
disconnected
from
the retraction
fitting.
2. Actuate
the hydraulic
system
to bring
the hydraulic
cylinder
to
the up position
by
turning
the master
switch
on and
moving
the
gear selector
handle
to
the up
position.
The
piston
of the
cylinder
should
be bottomed.
Revised:
7/29/77
LANDING
GEAR
AND BRAKE
SYSTEM
2D16