BOSCH ALTERNATOR TESTING AND ADJUSTING

TM-5-3805-258-24-2 Loader Scoop Type DED 4x4 Articulated Frame Steer 2 1/2 Cubic Yard Bucket (CCE) Airborne/Airmobile Sectionalized and Nonsectionalized Manual
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ENGINE TM 5-3805-258-24-2 TESTING BOSCH ALTERNATOR TESTING AND ADJUSTING ALTERNATOR TESTS Pole Body (Stationary Field Coil) Tests Toois Needed: 6V3030 Digital Multimeter 6V3032 Test Leads Test Lamp 24V 10W Generate; Test Bench Suppression Capacitor Test Remove cover plate from rectifier. Disconnect suppression capacitor lead (1) from D+ terminal. Connect ohmmeter between suppression capacitor lead and terminal B(–). SUPPRESSION CAPACITOR TEST 1. Suppression capacitor lead. If the meter reading is not 200K ohms or more, then replace the suppression capacitor. WARNING Discharge the suppression capacitor after testing. This prevents the igniting of cleaning fluid from sparks caused by capacitor discharge. POLE BODY (Alternator Disassembled for Illustration Purposes) 1. End frame. 2. Field winding leads. 3. Winding pole. Remove regulator cover and regulator. Winding Continuity Test Connect ohmmeter between the field winding leads (2). POLE BODY WINDING CONTINUITY TEST 2. Field winding leads. 4. Rectifier bridge lead. The resistance should be 7 to 9 ohms. If the resistance test values are not correct, there is an open or short between the windings (2). 5-12g

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