Install
Brush
Assembly
Insert brush holder into grooves in hub of rear housing. Place D + strap (or male terminal where
applicable) on stud and secure brush holder with locknuts (two places). Secure other end of D +
strap.
Install
Rear Cover
Be sure
felt gasket is in place (see illustration below). Position rear cover on rear housing and
secure with two screws.
INSTALLING REAR COVER
ALTERNATOR PERFORMANCE TESTS
FELT
GASKET
The following tests will determine the current producing capability of the repaired alternator. Mount
the
alternator in a test fixture capable of providing 5000 alternator RPM Select required battery
voltage and circuit polarity.
A.
For remote regulator model, connect fixture circuit leads and instruments to the alternator
terminals
as shown in Diagram A on page
100.
Place field rheostat in maximum resistance
position.
Turn drive motor on, adjust to obtain
5000 alternator RPM. Slowly reduce field rheostat resistance,
alternator should develop a charge. Continue to reduce resistance until alternator reaches rated
current output in amperes.
CAUTION: Limit output voltage to 15V maximum. DO NOT operate the
alternator for more than a few minutes in the manner,
due
to the lack of voltage control. If the
alternator will deliver its rated output, terminate the test.
B.
For integral regulator model, connect fixture leads and instruments to alternator terminals as
shown in Diagram B on page
100.
The Carbon pile or resistive load bank and ammeter must be capable of handling the alternator
rated output alternaotr RPM.
CAUTION: Make
sure
connections
are
well
secured
and
tight
to
avoid
possible
damage
to
instrument,
alternator
or
wiring
due
to
short
circuits.
Starting with carbon pile off, slowly increase load while observing ammeter and maintaining 5000
RPM. Increase load until a minimum output voltage of approximately
13.7
volts is obtained.
Record the output current at this point and refer to the chart for minimum
acceptable ratings.
79
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