Piper Lance II User Manual

LANCE
II SERVICE
MANUAL
236
O.422 MAX.
Figure
8-9. Height
of Spring
in Distributor
Block Tower.
a. Check the
lead terminals
for definite contact
with spring contacts
in outlets.
b. Remove
the harness
outlet cover
from the
magneto and
inspect for
the presence
of
moisture and carbon tracking due to moisture.
c. Check
contact springs
in distributor
block for evidence
of spark
erosion.
d. Check height
of contact springs
(0.422 maximum
from top of
block tower to
spring). (Refer to Figure 8-9.)
e.
With the cover
and harness separated
from the magneto
housing, check
contact
assemblies to see that cam follower is securely riveted to its spring.
f. Examine the contact points for excessive wear or burning. Figure 8-10 shows how
the average
contact point
will look when
surfaces are separated
for inspection.
CAUTION
Do
not open point
contacts
more than
.0625 of an
inch for
examination
of contact
surfaces.
Excessive spreading
of the
breaker points
will overstress
and
damage the contact
spring.
Desired
contact
surfaces have
a dull
gray, sand-blasted
(almost
rough)
or frosted
appearance,
over
the area where
electrical
contact is made.
This means
that points
are worn
in and
mated to
each other,
thereby providing
the
best possible
electrical contact
and
highest efficiency
of performance.
Minor
irregularities
or roughness
of point
surfaces are
not
harmful. (Refer
to Figure
8-10, center.)
Neither
are small
pits or mounds,
if not
too
pronounced. If there
is a possibility
of pit becoming deep
enough to penetrate
pad (refer to
Figure
8-10,
right),
reject contact
assembly.
NOTE
No attempt
should be made
to stone
or dress contact
points.
Should
contact
assembly
have
bad points
or
show excessive
wear,
the complete
contact
assembly
should
be replaced.
Issued: 1/3/78
POWER PLANT
2B2

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