Piper Cherokee Six - Page 365

PIPER
CHEROKEE
SIX
SERVICE
MANUAL
e.
Install
the
forward
spinner
bulkhead
and
torque
bolts
per
Table
VII-I.
Safety
bolts
with
MS20995-C41
safety
wire.
f.
Install
spinner
and
spinner
cuff.
Torque
all
attachment
screws
per
Table
VII-I.
7-6.
REMOVAL
OF
PROPELLER.
(Constant
Speed.)
a.
Insure
master
and
magneto
switches
are
off.
b.
Move
fuel
selector
to
off
position.
c.
Place
mixture
control
in
idle
cut-off.
d.
Note
position
of
each
component
to
facilitate
reinstallation.
e.
Remove
screws
from
spinner
cuff
and
spinner
assembly
and
remove
spinner.
f.
Remove
the
safety
wire
from
the
six
propeller
mounting
bolts
and
remove
the
bolts.
g.
Place
a drip
pan
under
the
propeller
to
catch
oil
spillage,
then
remove
the
propeller.
7-7.
CLEANING,
INSPECTION
AND
REPAIR
OF
PROPELLER.
a.
Check
for
oil
and
grease
leaks.
b.
Clean
the
spinner,
propeller
hub
interior
and
exterior,
and
blades
with
a
non-corrosive
solvent.
c.
Inspect
the
hub
parts
for
cracks.
d.
Steel
hub
parts
should
not
be
permitted
to
rust.
Use
aluminum
paint
to
touch
up
if
necessary,
or
replate
during
overhaul.
e.
Check
all
visible
parts
for
wear
and
safety.
f.
Check
blades
to
determine
whether
they
turn
freely
on
the
hub
pivot
tube.
This
can
be
done
by
rocking
the
blades
back
and
forth
through
the
slight
freedom
allowed
by
the
pitch
change
mechanism.
If
they
appear
tight
and
are
properly
lubricated,
the
pitch
change
mechanism
should
be
removed
so
that
each
blade
can
be
checked
individually.
If
blades
are
tight,
the
propeller
should
be
disassembled.
g.
Inspect
blades
for
damage
or
cracks.
Nicks
in
leading
edges
of
blades
should
be
filed
out
and
all
edges
rounded,
as
cracks
sometimes
start
from
such
places.
Use
fine
emery
cloth
for
finishing.
Refer
to
Figure
7-2
for
propeller
blade
care.
h.
It
is
recommended
that
for
severe
damage,
internal
repairs
and
replacement
of
parts,
the
propeller
should
be
referred
to
the
Hartzell
Factory
or
Service
Station.
i.
Grease
blade
hub
through
zerk
fittings.
Remove
one
of
the
two
fittings
for
each
propeller
blade,
alternate
the
next
time.
Apply
grease
through
the
zerk
fitting
until
fresh
grease
appears
at
the
fitting
hole
of
the
removed
fitting.
Care
should
be
taken
to
avoid
blowing
out
hub
gaskets.
7-8.
INSTALLING
PROPELLER.
(Constant
Speed.)
a.
Insure
master
and
magneto
switches
are
off.
b.
Place
fuel
selector
to off
position.
c.
Place
mixture
control
in
idle
cut-off.
d.
Observe
the
starter
ring
gear
to
make
sure
it
is mounted
properly
on
the
engine
crankshaft
flange.
One
of
the
bushings
on
the
crankshaft
is
stamped
with
an
"O"
mark
and
it
must
be
inserted
in
the
starter
ring
gear
hole,
likewise
identified
with
an
"O"
mark.
POWER
PLANT
Issued:
8/17/72
2E17