Piper Cherokee Six - Page 447

PIPER
CHEROKEE
SIX
SERVICE
MANUAL
243
Figure
7A-45.
Checking
Harness
Lead
Figure
7A46.
Checking
Harness
Lead
Continuity
Insulation
Resistance
e.
Test
continuity
of
each
harness
lead
using
a
High
Tension
Lead
Tester,
Part
No.
1
1-8888
or
11-8888-1
from
Bendix
as
follows:
1.
Connect
black
test
lead
to
contact
spring
and
red
lead
to
eyelet
of
the
same
lead.
(Refer
to
Figure
7A-45.)
2.
Observe
that
the
continuity
lamp
illuminates.
f.
Test
insulation
resistance
of
each
harness
lead
by
using
the
11-8888
or
11-8888-1
tester
as
follows:
1.
Attach
the
red
high
voltage
test
lead
to
contact
spring
of
harness
lead.
(Refer
to
Figure
7A-46.)
2.
Attach
the
black
test
lead
to
the
ferrule
of
the
same
harness
lead.
(Refer
to
Figure
7A-46.)
3.
Depress
PRESS-TO-TEST
pushbutton
switch.
4.
Observe
that
indicator
lamp
flashes
and
GAP
fires
simultaneously
as
long
as
the
PRESS-TO-TEST
switch
is
held
depressed.
Whenever
indicator
lamp
flashes
and
GAP
fails
to
fire.
lead
under
test
is
defective
and
must
be
replaced.
7A-46.
MAINTENANCE
OF
HARNESS.
Minor
repairs
of
the
harness
assembly,
such
as
replacement
of
contact
springs,
sleeves,
compression
springs,
eyelets,
or
grommets
can
be
accomplished
with
the
harness
mounted
on
the
engine.
Lead
assemblies
may
also
be
replaced
with
harness
mounted
on
the
engine
unless
inaccessibility
of
installation
or
number
of
leads
to
be
replaced
makes
it
unreasonable.
To
replace
grommets
or
eyelets,
pull
the
conductor
through
the
shielding
sufficiently
to
make
eyelet
accessible.
Remove
the
eyelet
being
careful
not
to
damage
conductor
wire.
Replace
grommet
and
eyelet
using
the
"AB"
groove
of
Crimping
Tool
No.
11-4152
or
a
pair
of
diagonal
pliers
modified
as
shown
in
Figure
7A-47.
Work
the
wire
back
into
the
shielding
POWER
PLANT
Added:
7/28/75
213