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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 />

EI<br />

Connect the regubror to an alternator n good condition.<br />

c.<br />

D.<br />

E -'l<br />

L-<br />

L JI!<br />

H 'l<br />

t-<br />

'<br />

D<br />

li.ii!<br />

0<br />

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 />

0<br />

0<br />

20<br />

Group 32

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