Piper Cherokee Six - Page 48

*PIPER
CHEROKEE SIX
SERVICE MANUAL
First
Method:
1. Remove
the valve
core from
the filler plug
at the top
of the strut
housing.
Allow
the plug to remain installed.
2.
Attach one
end of a clear
plastic
hose to the
valve stem
of the filler
plug and
submerge the other
end in a container of
hydraulic fluid.
3. Fully
compress
and extend
(ten +2
-0 inches
of
strut tube
exposed)
the strut
thus
drawing
fluid
from
the fluid
container
and
expelling
air
from
strut
chambers.
By
watching
the fluid
pass
through
the plastic
hose,
it can
be determined
when
the strut
is full
and no
air is
present
in the
chambers.
The
strut
must be
extended
the
full ten
inches
to
allow
fluid to
enter the bottom
chamber
of strut
housing.
4. When
air
bubbles
cease
to flow
through
the
hose,
compress
the
strut fully
and
remove
the hose
from
the valve
stem.
5.
With the
strut fully
compressed,
remove
the filler
plug to
determine
that the
fluid level
is visible
up
to the bottom
of
the filler
plug hole.
6.
Reinstall
the
core
in the
filler plug
and
apply
thread
lubricant
(Parker
6PB)
to
the
threads
of the
filler
plug and
install
the plug
in the
top of
the strut
housing.
Torque
the
plug
to 45
foot-pounds.
Second Method:
1. Remove
the
filler plug
from the
top of
the strut
housing.
2. Raise
the strut
to full
compression.
3. Pour
fluid
from
a clean
container
through
the
filler
opening
until
it is visible
at
the top
of the strut
chamber.
If
the housing
has
been
completely
emptied
or
nearly so,
allow
sufficient
time for
the fluid
to drain
through
the orifice
from the
upper chamber
into
the
middle chamber.
4.
Lower
the gear
until
the
wheel
touches
the ground
(ten +2
-0 inches
of
strut
exposure)
and
then fully
compress
and extend
the
strut three
or
four times
to remove
any
air that
may be
trapped and
to allow
fluid
to enter the
bottom
chamber
of the
housing.
5. Raise
the
strut
to full compression
and
if needed,
fill
with
fluid to
the bottom
of
the
filler
plug.
6. Apply
thread
lubricant
(Parker
6PB)
to the
threads
of the
filler
plug.
Reinstall
the filler
plug and
torque
to 45 foot-pounds.
e.
Replace
the
torque
link bolt.
Tighten
bolt
only tight
enough
to
allow no
side
play in
the connection.
g. With
the
airplane
raised,
retract
and extend
the gear
strut several
times
to
ascertain
that
the strut
actuates
freely.
The
weight
of
the gear
fork
and
wheel
should
extend
the strut.
h. Clean
off overflow
of
fluid and
inflate
the strut
as described
in Paragraph
2-36.
i. Check
that
fluid is
not leaking
around
the strut
piston at
the bottom
of the
housing.
2-35b.
FILLING
OLEO
STRUTS
(PA-32R).
To fill
the nose
or main
gear oleo
strut with
fluid
(MIL-H-5606A).,
whether
it be the
addition
of a small
or large
amount,
proceed
as
follows:
a.
Raise
the airplane
on jacks.
(Refer
to Paragraph
2-1 1.)
b. Place
a
pan under
the
gear to
catch
spillage.
c.
At the
filler plug,
relieve
air
pressure
from
the strut
housing
chamber
by
removing
the cap
from the
air valve
and
depressing
the valve
core.
d. There
are
two methods
by which
the strut
chamber
may
be
filled and
these
are as
follows:
Method 1:
1.
Remove
the
valve core
from
the
filler
plug at
the top
of the
nose
gear
strut
housing
or at
the top
inboard
side
of
the main
gear
housing.
Allow
the
filler
plug to
remain
installed.
Revised:
7/29/77
1B24
HANDLING
AND
SERVICING