22 - ALTERNATOR & REGULATOR - BOSCH Article Text 1989...

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Article Text 1989 Volkswagen Golf For Volkswagen Technical Site Copyright © 1998 Mitchell Repair Information Company, LLC Monday, August 23, 1999 11:38PM ARTICLE BEGINNING 1989-92 ELECTRICAL Cabriolet, Fox, Golf, GTI, Jetta, Jetta GLI, Vanagon NOTE: Some Golf, GTI, Jetta and Jetta GLI models may use a Motorola alternator. Please refer to ALTERNATORS - SEV MOTOROLA article. Vanagon models only use Bosch 90-amp alternators. DESCRIPTION Bosch alternators are conventional 3-phase, self-rectifying type alternators. Bosch 65 through 75-amp alternators use 3 positive and 3 negative diodes connected to stator windings to rectify current. Bosch 90-amp alternators use 14 diodes. All alternators use 3 exciter diodes connected to stator windings. These diodes turn off the alternator indicator light and supply power to the voltage regulator while the engine is running. Bosch regulators are transistorized and integral with alternator. BELT TENSION ADJUSTMENT BELT TENSION SPECIFICATIONS ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ Application (1) Deflection In. (mm) New Belt ................................... 5/64 (2) Used Belt ................................. 13/64 (5) (1) - Deflection is with 22 lbs. (10 kg) pressure applied midway on longest belt run. ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ TESTING (ON-VEHICLE) WIRING CONTINUITY TEST 1) Connect a voltmeter between alternator "B+" terminal and ground. Voltmeter should indicate battery voltage. If not, check wiring between alternator and battery. 2) Turn ignition on and ensure alternator indicator light
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This note was uploaded on 10/04/2010 for the course ENGINEERS 22453175 taught by Professor Heydari during the Spring '08 term at Miami University.

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22 - ALTERNATOR & REGULATOR - BOSCH Article Text 1989...

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