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Home >> Triumph >> 1979 >> Spitfire >> Repair and Diagnosis (Single Page) >> Maintenance >> Procedures >> Alternators & Regulators - Testing >> Testing >> On Car Testing

On Car Testing

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Perform tests at normal operating temperatures. Engine should be accelerated gradually to desired testing RPM and returned to lower RPM as soon as possible. Do NOT race engine.

CAUTION: Never disconnect battery or alternator leads while alternator is running. Reverse polarity or excessive voltage will severely damage the charging system.