Delco 4 Terminal Voltage Regulator Wiring
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To test terminals Fl and F2, unplug the connector from the back of the alternator.If there is no increase in the reading, repair the alternator. If there is an increase in the voltmeter reading, replace the regulator. Field Relay Rest 1. 2. 3. 4. Connect a voltmeter between the No. 2 terminal and the ground on the regulator. Start the engine and run at about 15002000 RPM. If voltmeter.reads zero, check circuit connecting regulator terminal No. 2 and Delcotron R terminal. If voltage exceeds closing voltage (field relay), and light remains on, field relay is faulty and must be Refer to TM 98627 (DelcoRemy) and TM 91825B (Auto Lite) for cleaning and care of contact points. 49. Polarization of Generator Refer to TM 98627 (DelcoRemy) and TM 91825 B (Auto Lite) for procedure for polarizing the generator. 50. Checking the GeneratorRegulator Refer to TM 98627 (DelcoRemy) and TM 91825B (AutoLite) for special harnesses and checking procedures. Figure 31 is a wiring diagram of the generator, generatorregulator and battery circuit to be used General Motors Full Field Testing Many of the DELCORemy SI type of generators.with internal regulators provide a Dshaped test hole. or D hole. for full fielding tFigure 711l. WARMING: Removal of all electrical plugs and connections must be done with the key off to prevent damage to electrical system components. 4. If the resistance is higher than 2.4 ohms, connect a wire between the "F" and "A" terminals of the regulator wiring plug iFigure 713l. This jumps the B+ voltage from Motorbooks International Motorbooks. 5.5" series ID delcotron frames by prying at bolt locations. Remove the slip ring. RELAY TERMINAL . "F" TERMINAL "BAT" TERMINAL "GRD" TERMINAL SLIP RING END FRAME THRU BRUSH AND BOLT 2 TERMINAL NO. 3 TERMINAL NO. 4 TERMINAL f VOLTAGE REGULATOR.Voltage regulator allows the telltale lamp to light (as a bulb check) with the ignition key on and engine not running. When the engine is started and the generator Disconnect plug from regulator and connect a test light between terminal No. 4 (in plug) and ground. Turn on ignition switch and observe the light. If light does not go on, check bulb, socket or wiring between switch and regulator plug. If light goes on, check regulator, wiring between regulator F terminal and alternator, or Delcotron itself. 2. Disconnect jumper wire at ground end and reconnect to F terminal in plug. Turn on ignition for a second and note light. If light goes on, problem is in Resetting Current or Voltage Regulators Note: If a commercial test.set is to be used, follow the instructions given for your test instrument and ignore the meter hookup given here. After points are cleaned and gaps properly set, proceed with setting the Meter hookup for resetting voltage and current regulators regulator as follows, regardless of the number of terminals: Disconnect the wire from the "BAT" (Delco) or "B" (AutoLite) lug of the regulator. (Tape this wire as a precaution There is a second link in the circuit between the horn relay and the ignition switch. 3. A third link is in the wire running to the No. 3 voltage regulator terminal. Its purpose is to protect the regulator contacts and the alternator field circuit. 4. The fourth link is connected between the main junction.block and the horn relay. These links must be inspected before proceeding with troubleshooting Voltage regulator circuit diagrams (© Chevrolet Div., G.M. Corp.) Delcotron output test connections you are dealing with an “A” circuit. If it is connected to the grounded brush, you have a “B” circuit. Armed with this wonderful distinction between the two common grounding systems for field coils, you are now ready to perform an important oncar test, and to install new, repaired or restored voltage regulators and generators in old cars. First the test. When a charging system fails to provide an adequate charging rate, it is important to determine whether it is the regulator or the generator 4. Connect a tachometer to the.engine. Reconnect the negative battery cable. 5. Connect a variable carbon pile rheostat between the battery terminals. Be sure the control switch is in the OFF position. 6. Start the engine and allow it to run at idle. 7. Adjust the carbon pile and run the DELCOTRON SI SERIES (General Motors Corp. and American Motors) This system is an integrated AC generating system containing a builtin voltage regulator. The regulator is mounted inside the slip