Piper Cherokee Six - Page 341

PIPER
CHEROKEE
SIX
SERVICE
MANUAL
3.
Raise
the
gear
by
pushing
up
on
the
retraction
fitting,
thus
disengaging
the
hooks,
and
pushing
up
on
the
pivot
point
at
the
bottom
of
the
side
brace
links
to
bring
the
links
out
of
the
locked
position.
Raise
the
gear
until
the
fork
presses
lightly
into
the
rubber
pad.
Retain
the
gear
in
this
position.
4.
Loosen
the
jam
nut
on
the
piston
rod
of
the
actuating
cylinder
and
turn
the
rod
end
bearing
in
or
out
to
allow
a
slip
fit
of
the
attachment
bolt.
5.
Install
with
the
attachment
bolt,
bushing,
spring
swivel,
and
secure
with
washer
and
nut.
Install
the
gear
downlock
spring.
6.
When
the
gear
is
to
within
.125
of
an
inch
of
correct
adjustment,
the
rod
end
need
not
be
disconnected
and
therefore
all
that
will
be
required
is
to
loosen
the
jam
nut,
place
a
wrench
on
the
flat
at
the
end
of
the
piston
rod
and
turn
to
obtain
correct
adjustment.
7.
Check
the
rod
end
bearing
for
adequate
thread
engagement
and
tighten
jam
nut.
8.
If
the
downlock
limit
switch
is
properly
adjusted,
retract
and
extend
the
gear
hydro-electrically
to
ascertain
that
the
gear
operates
properly.
6A-26.
ALIGNMENT
OF
MAIN
LANDING
GEAR.
(Refer
to
Figure
6A-9.)
a.
Place
a
straightedge
no
less
than
twelve
feet
long
across
the
front
of
both
main
landing
gear
wheels.
Butt
the
straightedge
against
the
tire
at
the
hub
level
of
the
landing
gear
wheels.
Jack
the
airplane
up
just
high
enough
to
obtain
a
six
and
one-half
inch
dimension
between
the
centerline
of
the
strut
piston
and
the
centerline
of
the
center
pivot
bolt
of
the
gear
torque
links.
Devise
a
support
to
hold
the
straightedge
in
this
position.
b.
Set
a
square
against
the
straightedge
and
check
to
see
if
its
outstanding
leg
bears
on
the
front
and
rear
side
of
the
brake
disc.
(It
may
be
necessary
to
remove
the
brake
assembly
to
have
clear
access
to
the
disc.)
If
it
touches
both
forward
and
rear
flange,
the
landing
gear
is
correctly
aligned.
The
toe-in
for
the
main
landing
gear
wheels
is
0
±
1/2
degrees.
NOTE
A
carpenter's
square,
because
of
its
especially
long
legs,
is
recommended
for
checking
main
landing
gear
wheel
alignment.
c.
If-the
square
contacts
the
rear
side
of
the
disc,
leaving
a
gap
between
it
and
the
front
flange,
the
wheel
is
toed-out.
If
a
gap
appears
at
the
rear
flange,
the
wheel
is
toed-in.
d.
To
rectify
the
toe-in
and
toe-out
condition.
remove
the
bolt
connecting
the
upper
and
lower
torque
links
and
remove
or
add
spacer
washers
to
move
the
wheel
in
the
desired
direction.
Refer
to
the
Toe-in.
Toe-out
Correction
Chart
(Table
VIA-III).
e.
Should
a
condition
exist
that
all
spacer
washers
have
been
removed
and
it
is
still
necessary
to
move
the
wheel
further
in
or
out,
then
it
will
be
necessary
to
turn
the
torque
link
assembly
over.
This
will
put
the
link
connecting
point
on
the
opposite
side
allowing
the
use
of
spacers
to
go
in
the
same
direction.
f.
Recheck
wheel
alignment.
If
the
alignment
is
correct,
safety
the
castellated
nut
with
cotter
pin.
LANDING
GEAR
AND
BRAKE
SYSTEM
Issued:
7/28/75
2D17