TM 5-6115-593-12 TO 35C2-3-463-1 LEGEND FOR FIGURE 4-30 (SHEET 2) 13. Heater assy 34. Bolt assy 14. Cord grip 35. EB tank 15. Reducer 36. Cord grip 16. Cover 37. Seal ring 17. O-ring 38. Cord grip 18. Heater element 39. Seal ring 19. Swivel adapter 40. Terminal block 20. Cap 41. Ground lug 21. Washer 42. Plate 22. Grommet 43. Bolt assy 23. Cap 44. Junction box 24. Set screw 45. Mounting plate 25. Sensing unit 46. Lub oil heater assy 26. Swivel adapter 47. Cap 27. Burr 48. Washer 28. Nipple 49. Grommet 29. Clamp 50. Cap 30. Hose 51. Burr 31. Screw 52. Reducer 32. EC flange and valve assy 53. Heater element 33. Gasket Section XX.  MAINTENANCE OF FUEL TRANSFER PUMP 4-52. FUEL   TRANSFER   PUMP.      The   fuel   transfer pump  (figure  4-31)  has  a  DC  operated  motor  and  is used  to  transfer  fuel  from  an  auxiliary  source  to  the generator   set   fuel   tank.      Pumping   is   automatically controlled by a float level switch in the generator set fuel tank  when  the  FUEL  PUMP  switch  on  engine  control panel  (see  figure  2-1)  is  in  the  AUTO  position.    The pump   (16,   figure   4-31)   is   mounted   on   the   support bracket (51) on the generator set base assembly. a. Inspection. (1) Inspect  pump  for  leaks,  loose  connections, dents, and cracks. (2) Remove fuel line from pump inlet connection  and  inspect  filter  assembly  for accumulated    dirt,    cracks,    breaks    which would cause restriction to fuel flow. (3) Inspect  the  motor  for  overheating  or  other visible signs of damage. b. Test.      Transfer   pump   testing   consists   of   an operational test as follows: (1) Place 24V DC CONTROL CIRCUIT BREAKER on generator panel to OFF, and FUEL PUMP switch on engine panel to OFF position. (2) Disconnect   hose   assembly   connected   to pump connector (10, figure 4-31). (3) Attach  a  length  of  hose  of  this  connector and place in a container of adequate size. (4) Connect  an  external  fuel  supply  to  the  fuel transfer  pump  connection  on  the  outside  of the base  assembly. 4-88