DO NOT TURN THIS NUT UNDER ANY CONDITION 0 ADJUSTING SCREW Turn To Adjust Voltage Setting Fig 4c Adjust Voltage Setting Operations Section and should be referred to as necessary SYSTEM CONDITION CHECKS STATIC CHECKS Before making any electrical checks perform the following static checks 1 Check for loose or broken blower belt 2 Check for defective battery Refer to Battery 3 Inspect all connections including the slip on connectors at the regulator and Delcotron NOTE Do not snort field to ground to check if generator is charging since this will seriously damage the charging system SYSTEM CONDITION TEST This test is used to indicate the overall condition of the charging system both good and defective and to isolate the malfunctioning unit if the system is defective JUMPER LEAD RESISTOR BY PASS NEffDEC WHEN CRANKING ENGINE 12B a OHM TEST VCJ LTM RESISTOR TO IGN KaN SWI ICH 7K Fig 5c Voltage etti 1 With ignition off perform the prescribed Static Che ks outlined in this section Then set hand brake and ft transmission into neutral 2 Co ect a voltmeter from junction block on horn rel4 to ground at regulator base CAUTION Be sure meter clip does not touch a resiotor or terminal extension under regulator 3 Con ect a tachometer on engine 4 Turn ignition switch to ON and check indicator lamp If lamp fails to gio r s v r f o r m appropriate test and corrections see Indicator Lamp Circuit test before continuing test 5 If lamp glows start the engine and run it at 1500 rpm or above Check indicator lamp If lamp fails to go out perform appropriate test and corrections see Indicator Lamp Circuit tests before continuing test NOTE At this point a field circuit has been established and any other problem will lie in generator or regulator 6 Turn on high beam headlights and heater blower motor to high speed run engine at or above 1500 rpm for h few minutes if necessary and read the voltage on meter NOTE Voltage will not greatly exceed 12 1 2 volts until the battery develops a surface charge a few minutes generally unless the battery is seveFely discharged or is hot If reading is a 12 1 2 volts or more turn off electrical loads stop engine and proceed to Step 7 b Less than 12 1 2 volts perform Delcotron Output Test Voltmeter Method 1 Delcotron tests bad refer to Service Operations and repair Delcotron then repeat Step 6 2 Delcotron tests good disconnect regulator connector remove regulator cover and reconnect the connector Then repeat Step 6 and GENERATOR GRD F R o BAT REGULATOR lOR 2D R 0 ETER TO REGULATOR A5 SHOWN 60 ig Test Connections