TM 5-6115-332-14 P-8-614-14 TO  35C2-3-424-1 d.  Testing.  Using  a  multimeter  check  for  con- tinuity of switch contacts in all positions. 4-37.  Voltage  Selector  Switch  (S3). a. Removal. Refer to figure 4-24 and the follow- ing   instructions   to   remove   the   voltage   selector switch. (1) Tag and disconnect leads from the voltage selector switch. (2)  Loosen  setscrew  securing  control  knob  on the   voltage   selector   switch   and   remove   control knob. (3)  Remove  locking  nut  and  washer  securing the voltage selector switch to the control panel. (4) Remove the voltage selector switch. b. Cleaning, Inspection and Repair. (1)  Carefully  and  thoroughly  clean  the  exte- rior  surfaces  of  the  voltage  selector  switch  with  a clean lint free cloth. (2) Inspect the switch for signs of burned ar- eas, damaged threads, cracks or for loosened or cor- roded contacts. (3) Replace a damaged or defective voltage se- lector switch. c. Installation. (1)   Position   the   voltage   selector   switch   in place on the control panel and secure with washer and locking nut. (2) Place control knob over end of switch shaft and secure by tightening setscrew. (3) Reconnect leads. d.  Testing.  Using  a  multimeter,  check  for  con- tinuity of switch contacts in all positions. 4-38. Voltage Adjusting Rheostat  (R1). a. Removal. Refer to figure 4-24 and the follow- ing  instructions  to  remove  the  voltage  adjusting rheostat. (1)  Tag  and  disconnect  the  leads  from  the voltage  adjusting  rheostat. (2)  Loosen  the  setscrew  securing  the  voltage adjusting rheostat knob on the rheostat and remove the control knob. (3)  Remove  locking  nut  and  washer  securing the voltage adjusting rheostat to the control panel. (4)  Remove  the  voltage  adjusting  rheostat. b. Cleaning, Inspection and Repair. (1)  Carefully  and  thoroughly  clean  the  exte- rior   surfaces   of   the   voltage   adjusting   rheostats using a clean lint free cloth. (2) Inspect rheostat for signs of burned areas, damaged threads and for loosened or corroded con- tacts. (3) Replace a damaged or defective rheostat. c. Installation. (1) Position the voltage adjusting rheostat in place on the control panel and secure with washer and locking nut. (2) Place rheostat knob over end of shaft and secure with setscrew. (3) Reconnect leads. d.  Testing.  Test  voltage  adjusting  rheostat  as follows: (1)  With  the  electrical  leads  disconnected from the rheostat connect a multimeter to the two outside  terminals.  The  resistance  should  measure not more than 11 or not less than 9 ohms. (2) Connect the multimeter between the cen- ter terminal and one of the outside terminals. Turn the shaft of the rheostat from one extreme position to  the  other.  The  resistance  should  vary  smoothly from zero to maximum. 4-39.  Wiring  Harness. The wiring harness and wire leads used on these generator sets consist of individual wire leads and terminals, and wire leads strapped into a harness by plastic wire straps. Repair worn, damaged, or bro- ken  individual  wire  leads.  Follow  the  wiring  dia- grams, shown as figures FO-1 and FO-3 and tag for proper  identification  all  wire  leads  that  are  to  be repaired. 4-40.  Fuseholder  (XF)  (Model  MEP- 017A). a. Removal. Refer to figure 4-25 and the follow- ing instructions to remove the fuseholder. (1) Tag and disconnect electrical leads as nec- essary. (2) Remove fuses. (3) Remove nuts, lockwashers and screws se- curing the fuseholder and remove fuseholder. 4-54