Piper Cherokee Six - Page 234

PIPER
CHEROKEE
SIX
SERVICE
MANUAL
CAUTION
Whenever
aircraft
is
placed
on
jacks
for
the
purpose
of
manually
retracting
the
nose
gear
assembly,
insure
the
nose
gear
downlock
is
fully
disengaged
before
releasing
the
nose
gear
drag
links.
Damage
could
occur
to
the
downlock
if
not
disengaged
fully.
d.
Disconnect
the
aft
end
of
cylinder
from
its
attachment
fitting
and
remove
the
cylinder
from
the
wheel
well.
5A-17.
DISASSEMBLY
OF
NOSE
GEAR
ACTUATING
CYLINDER.
(Refer
to
Figure
5A-7.)
a.
With
the
cylinder
removed
from
the
airplane,
remove
the
fitting
from
the
piston
rod
(6)
end
of
the
cylinder
(7).
Mark
the
position
of
the
fitting
to
facilitate
reinstallation.
b.
On
Syncro
Devices
nose
gear
actuating
cylinders
remove
the
snap
ring
(1)
from
the
annular
slot.in
the
end
of
the
housing.
On
Gar-Kenyon
nose
gear
actuating
cylinder
remove
saftey
wire
(9)
and
unscrew
the
end
gland
(2).
c.
On
Syncro
Devices
assemblies
pull
the
piston
(6)
with
end
gland
(2)
from
the
cylinder
housing.
On
Gar-Kenyon
assemblies
remove
piston
(6)
after
unscrewing
end
gland
(2).
5A-18.
CLEANING,
INSPECTION,
AND
REPAIR
OF
NOSE
GEAR
ACTUATING:
CYLINDER.
a.
Clean
the
cylinder
parts
with
a
suitable
dry
type
solvent
and
dry
thoroughly.
b.
Inspect
the
cylinder
assembly
for
the
following:
1.
Interior
walls
of
the
cylinder
and
exterior
surfaces
of
the
piston
for
scratches,
burrs,
corrosion,
etc.
2.
Threaded
areas
for
damage.
3.
Rod
end
fitting
and
swivel
fitting
of
cylinder
for
wear
and
corrosion.
c.
Repairs
to
the
cylinder
are
limited
to
polishing
out
small
scratches,
burrs.
etc.
and
replacing
parts.
5A-19.
ASSEMBLY
OF
NOSE
GEAR
ACTUATING
CYLINDER.
(Refer
to
Figure
5A-7.)
a.
Install
"O"
ring
(5)
on
the
exterior
of
the
end
gland
(2).
b.
Install
"O"
ring
(4)
in
the
interior
of
the
end
gland.
The
Syncro
Devices
assemblies
also
includes
a ring
back-up
(3)
with
the
"0"
ring
(4).
c.
Install
"O"
ring
(8)
on
the
body
of
the
piston
assembly.
d.
Lubricate
the
areas
around
the
"0"
rings
with
hydraulic
fluid,
slide
the
end
gland
on
the
piston
rod
and
the
piston
into
the
cylinder
housing
(7).
e.
Secure
the
end
gland
in
the
cylinder
by
installing
the
snap
ring
(1)
in
the
annular
slot
in
the
Syncro
Devices
cylinder.
The
end
gland
on
the
Gar-Kenyon
cylinder
is
secured
by
threading
gland
into
cylinder
body
(7)
and
securing
with
safety
wire
(9).
f.
Install
restrictor
fitting
in
the
piston
rod
end
of
the
cylinder.
g.
Check
smoothness
of
operation
of
the
piston.
Revised:
9/18/78
HYDRAULIC
SYSTEM
1J18