Piper Cherokee Six - Page 233

PIPER
CHEROKEE
SIX SERVICE
MANUAL
d.
Gear
"Back-Up"
Down
and
Up:
1.
Gear
Down:
Set
power
at
idle.
Glide
the
aircraft
at
130
MPH
(113
Kts).
Decrease
the
airspeed
at
the
rate
of 1
MPH
(1 Kt)
per
second.
The
gear
should
start
down
between
113
and
123
MPH
(98
to
108
Kts).
Place
the
gear
selector
switch
down,
after
the
gear
is
down
and
locked.
2.
Gear
Up:
Set
maximum
climb
power.
Maintain
approximately
80 MPH
(70
Kts)
for
approximately
15 seconds.
Move
the
gear
selector
up.
The
gear
should
stay
down
and
locked.
Increase
the
airspeed
at
the
rate
of
1
MPH
(I
KT)
per
second.
The
gear
should
begin
to retract
between
88
and 98
MPH
(76
and
85
Kts)
at zero
density
altitude.
The
speed
at
which
the
gear
starts
up
will
increase
1.5
MPH
(1.3
Kts)
for
each
1000
feet
increase
of
density
altitude.
3.
Manual
Override
Up
Latch:
With
the
gear
up,
the
aircraft
in
normal
flight
configuration,
select
up
on
the
gear
override
lever.
Engage
the
up
latch.
The
amber
up latch
warning
light,
below
the
gear
selector
switch,
should
be
flashing.
Gradually
slow
the
aircraft
below
the
auto
gear
extend
speed
and
observe
that
the gear
stays
fully
retracted.
Disengage
the
up latch.
The
flashing
amber
warning
light
should
go
out.
e.
Gear
Indicator
Lights:
1.
The
green
lights
indicate
when
the corresponding
gear
is in
the
down
and
locked
position.
Turn
landing
light
switch
on and
off-observe
ammeter
for
indication.
2.
The
red
gear
warning
light
will indicate
an
unsafe
condition.
It will
indicate
when
the
gear
is
in an
intermediate
position
neither
fully
up
nor
down.
In
conjunction
with
the
gear
warning
horn,
it will
indicate
when
the
throttle
setting
is
less
than
14
± 2 inches
of
manifold
pressure
while
the gear
is
not
down
and
locked.
It will
also
indicate
when
the
gear
is down
and
locked
while
the selector
switch
is in
the
UP position,
except
at
full throttle.
f.
The
Gear
Warning
Horn:
It
will
sound
in
conjunction
with
red
gear
unsafe
light
per
the
conditions
noted
above.
g.
Micro
Switch
Check:
1.
The
forward
throttle
micro
switch
is checked
by
moving
the throttle
full
forward
while
the
gear
is down
and
the
gear
selector
switch
is in the
up
position.
The
horn
should
stop
sounding
and
the
red
light
should
go
out. Retard
the
throttle
slightly
and the
horn
and
light should
come
on.
2.
The
aft throttle
micro
switch
setting
is checked
as follows:
With
the gear
up,
reduce
the
throttle
at
a normal
rate.
The
gear
warning
horn
and
the
red light
should
come
on
at 14
inches
of
manifold
pressure
+
2".
5A-15.
NOSE
GEAR
ACTUATING
CYLINDER.
5A-16.
REMOVAL
OF
NOSE
GEAR
ACTUATING
CYLINDER.
a. Place
the
airplane
on
jacks.
(Refer
to Jacking,
Section
II.)
b.
Disconnect
the hydraulic
lines
from
the actuating
cylinder
and
cover the
open
line
ends to
prevent
contamination.
c.
Disconnect
the cylinder
operating
rod end,
this
will require
manually
unlocking
the
nose gear
to allow
clearance
from the
engine
mount
for removal
of attachment
bolt.
Revised:
7/29/77
HYDRAULIC
SYSTEM
1J17