TM  5-6115-584-12 NAVFAC  P-8-622-12 TO-35C2-3-456-1 TM-05682C-12 voltage,   that   is   higher   or   lower   than   the   Generator   Set b.   Remove   (see   figure   4-45),   Remove   two   screws   (1), point.   This   error   signal   is   amplified   and   used   to   control lockwashers   (3),   and   nuts   (2)   holding   screen-guard   (4) the   direct   current   output   of   the   voltage   regulator   which in  place  and  remove  screen-guard. is   applied   to   the   control   windings   of   the   current-voltage transformers. 4-54.   GENERATOR/EXCITER   ASSEMBLY. c,   Repair.   Weld   and   straighten   screen-guard   as   neces- a. Inspect (see figure 1-1). On ASK equipped gener- sary.  After   repairs   are   completed,   check   that   screen-guard atom, remove ASK cover assembly (para 5-3). Inspect the attaches   properly   to   generator   and   does   not   touch   any generator/excitor assembly for physical damage. Check that moving  part. assembly  is  clean  and  free  of  dirt,  or  oil.  Check  that electrical Ieads from generator/exciter are free of damage. Check that assembly is securely mounted to engine and to the skid-base. 4-55. SCREEN-GUARD. d. Install. Place serviceable screen-guard in position over openings in generator stator-housing assembly (5). Tighten a.   Inspect.   Inspect   screen-guard   for   cleanliness   and screen-guard  (4)  in  position  with  two  screws  (1),  lock- physical  damage. washers (3) and nuts (2). On ASK equipped generators, install ASK cover assembly (para 5-3). Section  XV.  MAINTENANCE  OF  SKID-BASE 4-56. DESCRIPTION  AND  FUNCTION, (See  figure  l-l.)  The  skid-base  serve.  os  a  base  for  mount- ing   all   major   components   of   the   Generator   Set.   Revisions for  towing  or  lifting  with  a  forklift  are  built  into  the  skid- base.  Tie  down  rings  are  also  provided. 4-57. SKID-BASE. a. Inspect  (see  figure  4-46).  On   ASK   equipped   generators, refer to Chapter 5 for removal procedures for the entire ASK. (b)   Remove   four   screws   (1,   figure   4-46)   and   nuts (2)   attaching   each   mount   in   place   and   remove   mounts   (3). (2)   Battery   Frame   and   Tray   Removal. (a)   See   paragraph   4-25   and   remove   battery   hold- downs   and   batteries, (b)  Remove  screws  (4  and  8,  figure   4-46),   bevel washers   (7),   lockwashers   (6   and   10),   and   nuts   (5   and   9). Remove  frame  (11)  and  tray  (12). (1)  Vibration  Mounts,  Inspect  vibration  mounts  (3) for  cracked  rubber  and  loose  or  missing  hardware. (2)   Battery   Frame   Bottom.   Inspect   battery   frame (11)  for  corrosion,  bends,  dents  or  broken  welds. (3)   Battery   Tray,   Inspect   battery   tray   (12)   for corrosion,  or  physical  damage. (4)   Ground   Stud.   Inspect   ground   stud   (16)   for physical  damage  to  threads,  nuts  and  washers. (6)   Tie   Down   Ring.   Inspect   tie   down   rings   (25) for  physical  damage.  Check  that  they  are  securely  mounted to  skid-base. (6)   Skid-Base.   Inspect   skid-base   (24)   for   physical damage.  Check  that  skid-base  is  not  bent  or  bowed, b.  Remove  (see  figure  4-46). (1)   Vibration   Mounts. (a)  Refer  to  paragraph  4-38  and  remove  control cubicle. (3)  Ground  Stud.  Remove  nut  (13)  and  lockwasher (14)   attaching   wound   leads   (15)   from   starter   to   ground stud   (16).   Remove   nut   (13)   and   lockwasher   (14)   attaching ground  stud  to  skid-base  (24).  Remove  stud. (4)   Slave   Receptacle.   Tag   and   remove   leads   (17) from   slave   receptacle   (21   ).   Remove   receptacle   (21)   by removing   screws   (18),   nuts   (19)   and   lockwashers   (20). Remove   mounting   bracket   (23)   by   removing   screws   (22). c.   Repair. (1)   Battery   Frame   Bottom.   Clean,   weld   and straighten   battery   frame   as   required. (2)   Battery   Tray,   Clean   and   straighten   battery   tray as  necessary. (3)   Broken   or   Loot   Terminal   Clip   (Retainer,   Safety Clip).  For  fabrication  procedure,  see  Chapter  4,  Section  XII Maintenance   of   Control   System,   paragraph   4-37. d.  Install  (see  figure  4-46). (1)   Vibration   Mounts. (a)   Position   mounts   (3)   and   install   screws   (1) and  nuts  (2). Change 7 4-57