TM 5-6115-584-34 NAVFAC  P-8-622-34 TO-35C2-3-456-2 (2)   Perform   the   test   and   calibration   procedures shown in figure 6-4. (3) Failure of the voltage regulator to meet the test and calibration requirements indicates the voltage regulator should  be  replaced. e.   Repair.   See   voltage   regulator   schematic   diagram, figure 6-5 or 6-5.1. (1)  Repair  of  the  voltage  regulator  is  limited  to replacing defective components. Refer to the schematic fig- ure 6-5 or 6-5.1 for proper values. f.  Installation  (see  figure  6-3). NOTE When   replacing   voltage   regulator,   remove jumpers first from old voltage regulator. Install jumpers in the same location on the new regula- tor. Failure to do so will result in voltage regulator failure.   If   difficulty   occurs   in   reconnecting jumpers, refer to Fig 1-1. (1)  Mount  serviceable  voltage  regulator  (39)  into the control box (57) using nuts (38). (2) Reconnect previously tagged and removed har- ness to the voltage regulator terminal board. 6-7. AC OUTPUT CONTROL BOX WIRING HARNESS. Install  and  repair  wiring  harness  by  replacing  wires,  connec- tors, and terminal lugs as necessary. See figure 6-6 and tables 6-3,6-3.1  for  all  necessary  wiring  harness  assembly. 6-8. AC OUTPUT CONTROL BOX ASSEMBLY. a.  Test,  on  Equipment. (1)  Resistor  R3  (20,  figure  6-10)  must  be  adjusted as follows before performing any tests. (2)  Remove  wire  D26F16  from  TB3-1  and  con- nect 0 to 1 amp ac ammeter. Connect test ammeter as shown in figure 6-7. (3)  Place  reconnection  switch  in 120 position. (4)   With   the   generator   operating   at   rated   fre- quency, apply rated load by closing circuit breaker (CB1)  (9, figure  6-10). (5)  Adjust  R3  until  ammeter  previously  installed reads 0.6 amps, tighten locknut on R3.  R3 is now adjusted properly. (6)   Disconnect   test   equipment   and   proceed   with testing in accordance with test schedule. NOTE Because the proper connection of certain ac out- put control box circuits can only be determined by its ability to function properly when operated in  conjunction  with  the  control  cubicle,  it  is imperative  that  the  control  cubicle  supplied  be complete  and  is  functioning  properly  for  all tests. (7)  With  the  unit  running  normally,  test  control box assembly by measuring voltage at load terminals with the  reconnection  switch  in  each  of  its  three  positions.  See table 6-4. b. Remove (see figure 6-8). Remove electrical connec- tor  plugs  from  connectors  (2)  on  side  of  control  box  (1). Remove two screws (3), lockwashers (4), bevel washers (5), lockwashers (6), and nuts (7). Remove four screws (8) and washers  (9)  attaching  box  to  skid-base  (10)  and  remove  con- trol box (1). c.   Install.   Mount   control   box   (1)   to   skid-base   (10) using screws (8), washers (9), and screws (3), lockwashers (4), bevel washers (5), lockwashers (6), and nuts (7). Reconnect plugs to connectors (2). 6-9. AC OUTPUT CONTROL BOX (INTERNAL COMPONENTS). Before  working  on  the  load  terminal  board  or other devices associated with the ac control box, make certain that the Generator Set is not oper- ating, all switches are in the OFF or OPEN posi- tion, and there is no input to the load. Table 6-4. Terminal Voltages Measure Correct Switch Position Across Voltage 120 V, 1 Phase L1-L3 120 vac 120/240V, 1 Phase L0-L1 120 vac L0-L3 120 vac LI-L3 240  vac 120/208V, 3 Phase L0-L1 120 vac L0-L2 120 vac L0-L3 120 vac L1-L2 208  vac L2-L3 208  vac LI-L3 208  vac Change  7 6-9