TM    5-5420-226-20-1 Symptom-49 DETAILED TROUBLESHOOTING PROCEDURE FROM STEP SUPPORT SYSTEM = COMMUNICATIONS o¹² (Continued) i ~   Check   if  static   is  caused   by  right   fuel    tank electrical   fuel   pump. Second Technician (Operator’s Station) l   Set   MASTER BATTERY switch OFF. First Technician (Commander’s Station) l l l l Second Technician (Operator’s Station) l   Set    MASTER BATTERY switch ON. First Technician ~Commander’s Station) l   Turn    on   radio   set   (TM    5-5420-226-   10). l   Listen    for   static    in   radio   helmet. Turn off   radio set   (TM 5-5420-226-10). Remove right-hand floor access cover (page 17-9). Remove access cover for    right fuel   pump radio interference suppression capacitor and    housing assembly (page 10-3 16). Disconnect electrical connector from capacitor and housing assembly. Did  static   stop  when   right  fuel  tank  electrical   fuel pump  was  disconnected? ‘  l   Turn   off   radio   set  (TM  5-5420 -226-10). l   Replace   right  fuel    tank  fuel pump  radio   interference suppression   capacitor   and housing   assembly (page   10-316). ACCESS  COVER REMOVED ,=---’p ./ J//.= CAPACITOR /P Q AND  HOUSING / / ASSEMBLY ELECTRICAL  / ‘ ‘ CONNECTOR ) l   Connect   electrical   connector to  capacitor    and  housing assembly. l Install  capacitor   and  housing assembly   access   cover. l   Install  floor   access   cover (page   17-9). l   Turn   off   radio   set (TM  5-5420-226-10). l   Replace   left  fuel  tank  fuel pump  radio   interference suppression   capacitor   and housing   assembly (page   10-326). TAI07236 4-547