Piper Cherokee Six - Page 221

PIPER
CHEROKEE
SIX
SERVICE
MANUAL
e. Repairs
are limited
to brush
replacement
as follows:
1. One
brush
holder
has the
winding
wire
attached.
Locate
this
wire
and remove
by
using
a soldering
gun.
2. The
head
assembly
can now
be
removed
and
worked
on
for ease
of
brush
replace-
ment
if required.
3.
Remove
brush
wire and
brush
from
by-metal
heat
protector.
4.
Solder
new
brush
wires
to
head
assembly
and
by-metal
heat
protector,
and
wire
from
winding
to
one brush
holder.
5.
Install
brush
springs
and
brushes
into brush
holders
and
secure
in
place
(temporary)
with
a
piece of
string
looped
around
the
brush
and
holder
and
tied in
a knot.
NOTE
Insure
that
the braided
wire
is
in the
holder
slot
for
proper
brush
movement.
6.
Install
the
head
assembly
with
new
brushes
to the
frame
and
commutator
in
accordance
with
instructions
given
in Paragraph
5A-8, Step
a.
5A-8. ASSEMBLY
OF
HYDRAULIC
PUMP.
(Refer
to Figure
5A-3.)
a.
The
pump
motor
may
be assembled
and
installed
on the
reservoir
as follows:
1.
Position
motor
frame
(9)
on reservoir
(13). Note
aligning
marks
on
frame
and
reservoir.
2. Place
thrust
washers
(11),
of
the same
amount
removed,
on the
drive end
of the
armature
(8).
3.
Lubricate
the
entire
length
of the armature
shaft,
on the
drive end.
with
light grease
to
prevent
O-ring
seal
from
damage.
Insert
end
of shaft
in
reservoir.
4. Saturate
felt
oiling
pad around
commutator
end
bearing
with
SAE
20 oil.
Allow
excess
oil
to
drain
off
before
assembling
motor.
5. Insert
thrust
ball
(7) in
bearing
of motor
head
(1). To
hold
ball in
position,
place
a
small
amount
of
grease
inside
the
bearing.
6.
Place
head assembly
on frame
and
allow
brushes
to
extend
over commutator.
Remove
the string
securing
the
brushes
in the
holders.
Push
head
assembly
on frame
and
insure
proper
indexing
of head and
frame
assemblies.
Secure
in place
with thru
bolts (4).
7.
Check
freedom
of
rotation
and
end play
(thrust)
of
the armature
within
the
assembly.
A minimum
of .005
inch end
play is
permissible.
Adjust
to
this tolerance
if
necessary
by
adding or
removing thrust
washers
(11) on
drive end
of armature
shaft.
Revised:
9/18/78
HYDRAULIC
SYSTEM
1J5