Piper Lance II User Manual

LANCE
II SERVICE
MANUAL
not
binding
in
the
holders.
The
full
brush
surface
should
ride
on
the
commutator
with
proper
spring
tension
(refer
to
test
specification)
to
give
good,
firm
contact.
Brush
leads
and
screws
should
be
tight
and
clean.
b.
Armature
-
The
armature
should
be
checked
for
short
circuits,
opens,
and
grounds:
1.
Short
circuits
are
located
by
rotating
the
armature
in
a
growler
with
a
steel
strip
such
as
a
hack
saw
blade
held
on
the
armature.
The
steel
strip
will
vibrate
on
the
area
of
the
short
circuit.
Shorts
between
bars
are
sometimes
pro-
duced
by
brush
dust
or
copper
between
the
bars.
Undercutting
the
insulation
will
eliminate
these
shorts.
2.
Opens
-
Inspect
the
points
where
the
conductors
are
joined
to the
com-
mutator
for
loose
connections.
Poor
connections
cause
arcing
and
burning
of
the
commutator.
If
the
bars
are
not
badly
burned,
resolder
the
leads
in
the
riser
bars
and
turn
the
commutator
down
in
a
lathe.
Then
undercut
the
insulation
be-
tween
the
commutator
bars
.031
of an
inch.
3.
Grounds
in
the
armature
can
be
detected
by
the
use
of
a test
lamp
and
probes.
If
the
lamp
lights
when
one
test
probe
isplacedon
the
commutatorand
other
test
probeonthe
armaturecore
or
shaft,
the
armature
is
grounded.
If
the
commutator
is
worn,
dirty,
out
of
round,
or
has
high
insulation,
the
commutator
should
be
turned
down
and
undercut
as
previously
described.
c.
Field
coils
-
The
field
coils
should
be
checked
for
grounds
and
opens
using
a test
lamp.
1.
Grounds
-
Disconnect
field
coil
ground
connections.
Connect
one
test
probe
to
the
field
frame
and
the
other
to the
field
connector.
If the
lamp
lights,
the
field
coils
are
grounded
and
must
be
repaired
or
replaced.
2.
Opens
- Connect
test
lamp
probes
to ends
of
field
coils.
If
lamp
does
not
light,
the
field
coils
are
open.
If
the
field
coils
need
to
be
removed
for
repair
or
replacement,
a pole
shoe
spreader
and
pole
shoe
screwdriver
should
be
used.
Care
should
be
exercised
in
replacing
the
field
coils
to
prevent
grounding
or
shorting
them
as they
are
tight-
ened
into
place.
Where
the
pole
shoe
has
a
long
lip
on
one
side,
it should
be
as-
sembled
in
the
direction
of
armature
rotation.
11-56.
REASSEMBLY.
To
reassemble
the
motor
follow
the
disassembly
proce-
dures
in
reverse.
Install
new
tang
lock
washers
where
removed.
CAUTION
If Folo-Thru
drive
is
manually
rotated
to
locked
posi-
tion,
do
not
attempt
to force
it
in
a reverse
direction.
Proceed
to
install
with
pinion
meshing
with
flywheel.
Issued:
1/3/78
ELECTRICAL
SYSTEM
2H3

Piper Lance II Specifications

General

Manufacturer	Piper Aircraft
Max Takeoff Weight	3, 600 lb (1, 633 kg)
Crew	1
Horsepower	300 hp
Seats	6
Length	27 ft 7 in (8.41 m)
Capacity	5 passengers