I appreciate this valuable information. Check circuit between starter and battery positive terminal. Negative Diodes 1 , Check Individually Hold positive probe 2 to diode housing and other probe 3 to diode connection. Omar Roberto Caravaca 2009-04-18 05: 42: 14 Thank you for the contribution. Ensure alternator, engine and body are properly grounded. For an amateur who likes to repair your car is very good quality and very clear. Navigation is simple with convenient chapter bookmarks and ability to search by keyword.
Test lamp must light up. When soldering in new carbon brushes, maintain projection - see Technical Data. Check Graph A to see if temperature and voltage are within center lines of graph. All alternators use 3 exciter diodes connected to stator windings. Check rotor winding and slip rings for short circuit to ground using ohmmeter. Important: Solder must not run up strand.
Your file downloads total 7 have been in the past 24 hours, the limit is 0. The test result allows only qualitative statments to be made about the effectiveness of the diode or the condition of the barrier layer. Test lamp must not light up. All technical details and step-by-step instructions you will need are included! Diodes, Check Circuit diagram of an electronically-regulated alternator 1 Rectifier diodes 2 Excitation diodes 3 Stator winding 4 Excitation winding 5 Electronic voltage regulator connected 6 Battery 7 Ignition lock 8 Charge telltale With the diode test described in the following, individual diodes can be tested for continuity, interruption, short circuit and blocking action. If any diode is faulty, replace diode plate completely.
Commercial use and publishing at other websites of these items is prohibited. Test lamp must not light up. Check all phases of stator winding for short-circuited windings using ohmmeter ohmic resistance. See Technical Data for test values Replace rotor with short circuit. The positive probe 2 must be held to the diode connection and the other probe to the contact rail 3.
Bosch 55-amp through 75-amp alternators have 3 positive and 3 negative diodes connected to stator windings to rectify current. Cookies on this site are used to personalize content and ads, to provide social networking features and analyze traffic. Excitation Diodes 1 , Check Individually Excitation diodes are checked in the same way as positive diodes. If alternator output is low, replace alternator. Turn down uneven slip rings; dimensions, see Technical Data. Excharge probes and check again.
Check all phases of stator winding for short circuit to ground using ohmmeter. If any diode is faulty, replace diode plate completely. I'm out of work and this helps me. Carbon Brushes, Check Replace carbon brushes if worn down to minimum dimension - see Technical Data. Adjust carbon pile on tester until voltmeter reads 12 volts. Abdelhak 2014-12-14 09:10:41 Merci beacoup Gabriela de souza 2015-02-20 23: 59: 41 very good easy to interpret thanks miguel 2015-06-29 02:26:52 thank you very much raul-tabo bras 2016 07-15 21: 27: 23 I was really useful, thank you very much edwar leak 2017-07-23 02: 03: 42 very good.
Electrical windings should only brought into contact with the cleaning agent briefly. Positive Diodes 1 , Check Individually Hold positive probe 2 to diode connection and other probe 3 to diode housing. If any diode is faulty, replace diode plate completely. Clean and polish slip rings with fine emery paper grain 500-600 - on lathe. Bosch Alternator, Overhaul Remove and disassemble alternator, see corresponding operation.
If not within center lines, replace voltage regulator. Testing information on these alternators is not available from the manufacturer. These diodes turn off the alternator indicator light and supply power to voltage regulator while engine is running. See Technical Data for test values Replace stator with short-circuited winding. Greetings Pabolal Julio Cesar Medina 2010-Aton-01 07 07: 19: 56 Excellent manual Alternators go ahead pasman 2010-01-18 02:54:47 very good amancio 2010-01-19 23:50:53 Great stuff, thanks jose-urbina 2010 01-25 04: 51: 21 Very good information thanks jose anto 2010-02-02 00:59:27 thanks for the info. We have Thousands of Manuals — email us about any you might need.
Thank you very much for the contribution. Check new brushes for ease of run in the brush holders. Exchange probes and check again. If light does not come on, check wiring between alternator and warning light. Cleaned parts should be immediately blown dry with compressed air. If battery voltage is not indicated, check wiring between alternator and battery.