Table  8-1.  Relay  Table  Group  Equipment  Tests  (Cont) Malfunctioning Malfunction On   equipment   test assembly Location 9 .  Paralleling    lamps Check   resistance   between   connections Dc   relay   assembly. Special   relay   box. do  not  illuminate 19  and  20,  7  and  8  of  A5,  dc  relay when  the  single- assembly. Resistance   should   be parallel   switch 7500  ±  5  percent  ohms.  An  infinite is  placed  to  the resistance   indicates   a   malfunction. parallel   position when   attempting to   parallel   two generators. 10.  Engine  generator Check   resistance   between   A5   con- Dc   relay   assembly. Special   relay   box. set   cranks,   but nections  21  and  24  with  the  posi- will   not   start. tive   lead   or   connection   21.   The value   indicated   will   be   approxi- mately   500   ohms.   Reverse   the leads,   the   resistance   shall   be infinite.   An   infinite   resistance in   both   directions   indicates   a malfunction. 1.    Engine-generator Check   resistance   between   A5   con- Dc   relay   assembly. Special   relay   box. set  will  not nections  11  and  10  with  the  posi- start. tive   lead   on   connection   11.   The value   indicated   will   be   approxi- mately   500   ohms.   Reverse   the leads,   the   resistance   shall   be infinite.   An   infinite   resistance in   both   directions   indicates   a malfunction. Key  to  Figure  8-1 1.   Screw 1A.  Screw 1B. Washer 2.   Tactical   relay   box   assy 3.   Screw 4.   Precise   relay   box   assy Mode   I.   Class   1   sets   only 5.   Screw 6.   Nut 7.   Load   measuring   unit 8.   Screw 9.   (Deleted) 10. Screw 11. (Deleted) 12. Terminal   lug 12A.   Clamp 13. Wrench 14. Special  relay  box  assy 15. Screw 16. Nut 17. Clamp 18. Excitation   assy 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. Clamp Screw Chain Nut Screw Clamp Nut Screw Clamp Nut Clamp Screw Bracket Screw Nut (Deleted) Clamp Screw Nut Bracket Screw 40.   Nut 41.   Clamp 42.   Screw 43.   Nut 44.   Clamp 45.   Screw 46.   Nut 47.   Clamp 48.   Grommet 49.   Screw 49A.  Washer 50.   Nut 51.   Washer 52.   Table 53.   Screw 54.   Nut 55.   Support   bracket 56.  Screw 57.   Nut Change   7   8-3