TM 5-3805-258-24-19 5 0 B O P E R A T O R ’ S S T A T I O NE L E C T R I C A L T R O U B L E S H O O T I N GDIODE ASSEMBLY CIRCUIT DESCRIPTIONThe diode assemblies are in rubber packages similar to the rubber plugs on theharnesses. They connect directly to a harness plug.CAUTIONThe 1V9633 and 2V9473 Diode Assemblies can be damaged if they arenot removed carefully. The rubber packages are soft and the diodescan be broken if the diode assembly is removed with pliers.A. 2VS472 DIODE ASSEMBLY (BLACK)ItIWIRE COLORSiDIODELOCATIONIDENTIFICATIONCIRCUITFUNCTIONANODECATHODEAKey switch to coil ofIsolate the engine stoprelayPIBRRIWstop relaywhen engineis operatingBAcrosscoilof mainFree wheeling diode protectsBRIWpower relaykeyswitchOn RelaypanelcKey switch to coil ofPrevents relay fromactivationRIWRIWmain powerrelayif batteries connected back-wardsDAlternator“R” terminalKeeps relayactivated if keyto main powerrelay coilswitch is turnedoff with engineDKGRR/Wrunning2 V 9 4 7 3 D i o d e A s s e m b ly4-139
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
