TM 5-6115-275-14 NAVFAC P-8-615-14 TO 35C2-3-452-1 (b) Slowly   adjust   R6   counterclockwise   until oscilloscope  (M3)  waveform  begins  to  go up from  "minimum  level"  (curve  3,  Figure 7-17).   M1  reading  shall  go  to  "maximum level" (35 VDC minimum) when waveform passes through zero. (c) Adjust AC  supply (PS1) to adjust (M2) to 136     VAC.          The     oscilloscope     (M3) waveform  shall  return  to  "minimum  level" and Ml shall read zero volts. (9) Without  further  adjustment  of  R6,  repeat the   above   procedure   for   the   remaining three conditions tabulated in Table 7-3.  In all  cases,  similar  performance  should  be achieved. NOTE ion one in Table 7-3 has already been accomplished in the previous procedures.      Procedures   are   repeated   for   the remaining three conditions. Table 7-3.  Test Conditions. Condition White Lead Black Lead Red Lead M+ 3Lead C2 CS C4 C5 C2 C5 C3 C3 C1 C4 C3 C4 C1 C6 C4 C6 NOTE he unit to meet adjustment requirements is indicative of a defective regulator. (10)   After   all   adjustments   have   been   made,   apply   a locking compound (P/N MILS-22473 GRHVV,    FSCM    80244)    between    the adjustment    screw    head    and    housing surfaces adjacent to screw head. h. Cleaning, Inspection, and Repair. (1) Clean  voltage  regulator  with  compressed air and a soft bristle brush. (2) Inspect    voltage    regulator    for     cracks, damaged     terminals,     or     other     visible damage. (3) For testing, refer to step a, Testing. (4) Repair   of   components   identified by   testing   as   faulty   is   by   component replacement. CAUTION Solder joints and/or component leads (except potentiometer leads) should not project more than 0.125 in.   beyond the surface of the board. (a) Transistor replacement. 1 Make sure that replacement transistor has same identification number as the original transistor. 2 Apply  heat  sinks  to  the  circuit  board  runs connected to the transistor being replaced. 3 Note   and   record   position   of   transistor leads and tab on transistor case in relation to the printed circuit board. 4 Unsolder  transistor  from  circuit  board  and remove. 5 Place   new   transistor   on   circuit   board. Make   sure   emitter,   collector,   and   base leads   are   positioned   as   noted   during removal. 6 Solder  transistor  in  accordance  with  MIL- STD-454  Requirement  5.    Trim  transistor leads. i. Installation. (1) Check  that  red,  black,  and  white  jumper wires    are    properly    positioned    for    the generator output.   Refer to Figure 7-15. (2) Place voltage regulator in control box and secure with four (4) screws and lockwashers. (3) Use tags for identification to connect leads to voltage regulator. 7-10. Relays and Resistors a. General (Model MEP-018A).  Relays  KI,  K2,  K3,  and  K4 furnish    starting,    stopping,    safety    and operational control for the generator.  The relays   are   mounted   on   Printed   Circuit Board TB3. (1) Relay  K1  is  used  to  start  the  generator engine  by  energizing  the  starter  solenoid through  the  normally  closed  contacts  of relay K3. 7-14.6  Change 8