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Piper SENECA II
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PIPER SENECA
II
SERVICE MANUAL
6-19.
CLEANING,
INSPECTION
AND
REPAIR
OF
GEAR
ACTUATING
CYLINDER.
a.
Clean
cylinder
components
with
a
suitable
dry
type
solvent
and
dry
thoroughly.
b. Inspect
cylinder
assembly
for
the
following:
1.
Interior
walls
of
cylinder
and
exterior
surface
of
the
piston
for
scratches,
burrs,
corrosion,
etc.
2.
Stripped
or
damaged
threads.
3.
Rod
end
fitting
and
swivel fitting
of
cylinder
for
wear
and
corrosion.
4.
End
fitting
retainer
slot
for
excess wear.
c.
Repairs
to
the
cylinder
are
limited
to
polishing
out
small
scratches,
burrs.
etc.,
and
replacing
components.
(Refer
to
Parts
Catalog
for
replacement
part
numbers.)
6-l
9a.
INSTALLATION
OFT-RINGS.
(Refer
to
Figure
6-7a.)
a. Place
synthetic
sealing ring
into
groove. Insure
that
seal
is
not
twisted
and
that
it lies flat in
the
groove.
(Refer
to
Sketches
A
and
B.)
b.
Orient
each
non-extrusion
ring so
that
the
rad
iused
corner
(if
there
is
one) will be
mated
t'o
the
seal
when
installed.
(Refer
to
Sketch
E.)
c.
Insert
one
end
of
the
non-extrusion
ring
(formed
by the
scarf
cut)
into
the
space
between the side
of
the
groove
and
the
side
of
the
seal. ( Refer
to
Sketch
E.)
d.
Work
the
entire
circumference
into
this space,
insuring
that
the
scarf
cut
of
the
non-extrusion
ring
is
properly
mated.
(Refer
to
Sketch
F.)
e.
Repeat
Steps
c
and
d
for
the
second
non-extrusion
ring.
f.
Spread
a few
drops
of
system
hydraulic
oil evenly
around
the
sealing edge
of
the
packing.
6-20.
ASSEMBLY
OF
GEAR
ACTUATING
CYLINDER.
(Refer
to
Figure
6-7.)
a. Install
O-rings
(3), (5)
and
(8) in
their
respective
positions.
h.
Lubricate
areas
around
O-rings
with
hydraulic
fluid,
park-a-lube
or
vaseline. Slide
end
gland
(
1)
on
piston
rod
(6). Slide
piston
into
cylinder
body
(7).
c.
Insert
hook
end
of
new lock ring (4),
(P/N
755 997), in
slot
of
cylinder
body
and
slot
in
end
gland.
Rotate
gland
counterclockwise
to
completely
wrap
lock ring
into
assembly.
d. Align
port
in
end
gland
and
cylinder
body.
e.
Check
smoothness
of
operation
of
piston
and
static
test
unit
to
check
for possible
cut
O-rings.
f.
Clean
nose
cylinder
orifices.
Revised:
12/08/83
1119
HYDRAULIC SYSTEM

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