TROUBLESHOOTING TESTING AND ADJUSTING TEST SEQUENCE CHARTS NOTE If  the  serviceman  is  familiar  with  the  troubleshooting  procedure  and  procedures for  checking  components,  the  following  table  of  resistance  values  may  save  time in  troubleshooting.    It  should  be  noted  that  these  values  are  approximate  and could change with new component changes. Component Symbol Component Resistance Value (ohms) C1, 3 RFI Suppression Capacitor Low then infinite C2 Suppression Capacitor Low then infinite CR1-6 Rotating Rectifiers Forward 10 Reverse 30K - 300K CR7, 8 Surge Suppression Diodes Fwd.  & Rev.  15K or more CR9 Controlled Rectifier Fwd.  & Rev.  30K - 3M (1) (2) CR10 Field Rectifier Forward 10 Reverse 30K or more CR11 Surge Suppression Diode Fwd.  & Rev.  15K or more L1 Suppression Reactor 0 L2 SCR Reactor 0 L3 Exciter Field 2 - 3 L4 Exciter Armature Much less than 1 L5 Rotating Field Less than 1 L6 Stator (Armature) Much less than 1 R1 Voltage Droop Pot 0 - 8 R2 Voltage Level Pot 0 - 500 R3 Voltage Gain Pot 0 - 5000 (3) R4 Regulator Power Resistor 1500 R7 Regulator Power Resistor (580 Frame Only) R5 Damping Resistor 10 R6 Suppression Resistor 27,000 (1) Forward & reverse resistance must be approximately the same. (2) Gate to cathode forward & reverse resistance  Is 10 - 200 and should be about the same (3) Earlier generators with old Al module (brown in color) - resistance should be 0-5000 ohms.  Later generators or generators with replacement Al module (black In color) - resistance should be 0-500 ohms. 55