Repairs and Maintenance
Repairs and Maintenance
Repairs and Maintenance
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Test ing vohage rcg u la tol<br />
Testing voltage regulator<br />
(On test bench or in vehicle)<br />
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Connect the regubror to an alternator n good condition.<br />
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Wiring diagramfortssting voltag€ regulator<br />
0,25-A,1O.r'm<br />
E. Ammeter 0 50 amps.<br />
Voh€se lamp 12 vohs F. Fesuaror resistance<br />
Conlrol lamp 12 vo rs, G. Batery 60 amparehours<br />
Voltage regulator -<br />
L<br />
2.<br />
Fesularor contacr for 3. Sprins rensoner V<br />
rower conrrorange 4. spring upper secrion<br />
Fegulalor contacl Jor Sreet spring<br />
upper conlrol Enge Lower seclioni<br />
Br meta spfng<br />
(<br />
-24 .2o .4O<br />
r80<br />
Run the alternatorat 5000 rpm (alt. speed) or2500 rpm<br />
(enginespeed) for 15 seconds. Read the voltage on the<br />
voltmeler. Wilh no load on lhe allernatof, the vollmeler<br />
should read 13.1-14.4 volts wilh the regulator ambient<br />
lemperalure at 25rc (77"F).<br />
Load lhe altematorwilh 10-15 amps, such as switching<br />
on headlights 10 ripper beam, <strong>and</strong> read thevollage. The<br />
voltage should still read betwe€n 13.1'14.4 volts, bul<br />
must notdrop more than ,4 volts less than the unloaded<br />
specification.<br />
For exact voltage at ambient lemperaturesee diagrams<br />
opposite.<br />
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20<br />
Group 32