1979 Volkswagen Audi Charging Systems Course 7.05 Service Training Publication. Original.
The battery, alternator, and voltage regulator are the heart of any automotive electrical system. These components which make up the Charging System provide the electrical power necessary to start the engine and operate all the electrical equipment.
While the Charging System components are generally trouble-free, a familiarity with the correct testing procedures and equipment will help you to quickly and accurately diagnose any problems that do occur.
This booklet is divided into three sections. The first section describes the operation of the alternator and voltage regulator. The operation of the battery and special precautions necessary when handling batteries are discussed in the second section. The third section provides you with information about testing the complete charging system.
Alternating Current (A.C.)
Direct Current (D.C.)
Three Phase Alternators
Charging System Testing
Battery Visual Checks
Specific Gravity Test
Static Voltage Test
Alternator Visual Checks
Alternator Output Test
Current Drain Test
Good condition with some wear and blemishing [see photos].
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