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Testing output on a Lucas ACR alternator- Use the car bodyas an earth. The three-pin plugaccomodates allthe alternatoroutput leads. Testeach connectionin turn.

The three-pin multiple plug has no earth terminal. Switch on the ignition and test the continuity of the leads one by one, by connecting them with the voltmeter to an earth. You should get a reading of battery voltage for each one; if not, there is a broken connection and the alternator cannot change the battery.

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Testing an alternator and checking output

Testing drive-belt tension Check drive-belt tension by pushing or pulling the belt inwards at th...


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