PIPER
SENECA II
SERVICE
MANUAL
Q
Figure 11-2. Removal
of
Slip Ring End Bearing
Figure 11-3. Removal
of
Rectifier
h. Check the field circuit
by
the following procedure:
I. On lead connected
to
(F
1)
terminal, connect a voltmeter
to
the field lead and to ground. If
voltmeter indicates any voltage, the circuit
is
operational.
i.
If
voltage
is
indicated at
both
the battery lead and field lead, the alternator should
be
checked for
possible malfunction. (Refer
to
Paragraph 11-9
.)
11-8. SERVICE PROCEDURES. Since the alternator and regulator are designed for use on only one
polarity system, the following procedures
must
be observed when working on the charging circuit. Failure
to observe these service procedures will result in serious damage to the electrical equipment.
a. When installing a battery, always make absolutely sure the ground polarity
of
the battery and the
ground polarity
of
the alternator are the same.
b. When connecting a booster battery, make certain
to
connect the negative
battery
terminals
together and the positive battery terminals together.
c.
When connecting a charger to the
battery,
connect the charger positive lead
to
the battery
positive terminal and the charger negative lead
to
the battery negative terminal.
d. Never operate the alternator on open circuit. Make absolutely certain all connections in the
circuit are secure.
e. Do
not
short across
or
ground any
of
the terminals
on
the alternator
or
regulator.
f.
Do
not
attempt
to
polarize the alternator.
11-9. OVERHAUL
OF
ALTERNATOR. When repairing the alternator, complete disassembly may
not
be
required. In some cases, it will only
be
necessary to perform those operations which are required to effect
the repair. However, in this section, the complete overhaul
is
covered step-by-step to provide detailed
information
on
each operation. In actual service practice, these
operatiom
may be used
as
required.
Reissued: 10/11/79
ELECTRICAL SYSTEM
2Gl
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