Piper PA-32RT-300T User Manual

11-63.
REMOVAL.
To remove
the
starting motor
from
the engine,
first dis-
connect
the
ground
cable
from the
battery
post
to prevent
short circuiting.
Dis-
connect
the lead
from the
starting
motor
terminal,
then
take out
the mounting
bolts.
The
motor can
then be lifted
off and
taken to the
bench for
overhaul.
11-64.
DISASSEMBLY.
a. Remove
the frame screws
from the commutator
end head
and pull end
head
and
armature from
frame. Lift the
brushes and lock
in elevated position
with
brush
springs. Use a
puller to remove
the end head from
the armature.
Use a
special
bearing puller
to remove the sealed
ball bearing
from the armature
shaft.
b. Remove
the frame screws
that secure
the gear housing
to the frame.
Re-
move bolts
and nuts holding
the gear housing
to the pinion housing
and separate
the two units.
Pull Bendix shaft
from pinion housing.
Do not lose
the steel spacer
that is
located on the
pinion end of the
shaft. Remove
reduction gear, woodruff
key and steel
spacer from
shaft.
c. Turn
the Bendix pinion
until it locks in
the extended position.
Locate
"spi-
rol" pin and
use a punch to remove.
Slide drive
assembly off
the shaft. Do not
attempt
to disassemble
the drive
and do not dip
it in cleaning solvent.
d. To remove
the roller
bearings from the
gear housing,
use an arbor press
and the
correct bearing
arbor.
DO NOT
HAMMER
OUT. Each
part should
be
cleaned
and inspected
for
excessive
wear or damage.
Bearings
should
be checked
for proper
clearance and
evidence of roughness
or galling.
Oil and dirt should
be
removed
from insulation
and the condition
of the insulation
checked.
11-65.
BRUSHES. Check
the brushes
to see that they slide
freely in their
hold-
ers and make
full contact
on the commutator.
If worn to
half their
original length
or
less,
they should
be
replaced.
11-66.
ARMATURE.
a.
Check the
commutator
for uneven
wear,
excessive
glazing or
evidence of
excessive
arcing. If
only slightly dirty,
glazed or discolored,
the commutator
can be cleaned
with 00 or
000 sandpaper.
If the commutator
is rough or worn,
it
should be turned.in
a lathe.
Refer to Figure
11-39. The armature
shaft should
be inspected for rough bearing
surfaces and rough or damaged
splines.
b. To test the
armature for grounds,
a set of test
probes connected
in series
with a 110-volt
light should
be used. Touch
one probe to a
commutator segment
and the other to the armature
core. If the test lamp
lights, -the armature is
grounded and
should be replaced.
c.
To test
for shorted
armature
coils, a growler
is used.
(Refer
to Figure
Issued: 1/3/78
ELECTRICAL
SYSTEM
2H7
LANCE
II
SERVICE
MANUAL

Piper PA-32RT-300T Specifications

General

Brand	Piper
Model	PA-32RT-300T
Category	Aircrafts
Language	English