TM  5-6115-584-12 NAVFAC  P-8-622-12 c. Removal. (1)  Fuel  Filter  Assembly  (see  figure  4-11).  Drain fuel  into  a  suitable  container  by  opening  drain  valve (1).    Disconnect  feul  lines  (2,  3  and  4)  and  drain  fuel lines.  Remove  elbow  (5),  check  valve  (6)  and  coup- ling   (7).   Plug   fuel   lines   to   prevent   accumulation   of foreign  material. (2)   Remove   screws   (8)   and   lockwasher   (9)   at- taching   each   filter   assembly   (10)   and   strainer   as- sembly  (11)  to  mounting  bracket  and  remove  filter  or strainer  assembly.  Remove  inlet  and  outlet  fittings (12).  Be  careful  when  removing  fittings  not  to  dam- age housing. (3)  Remove  nuts  (13),  lockwashers  (14),  screws (15) and remove bracket (16). (4)  Inspect  check  valve  (6)  for  cleanliness.  Us- ing  a  clean  punch  depress  check  valve  from  seat  (op- posite   end   of   arrow)   and   check   for   free   movement and   reseating   upon   release.   Replace   check   valve   if it  does  not  move  freely. d.    Installation. (1)   Position   bracket   (16)   on   frame   and   secure with  screws  (15),  lockwashers  (14)  and  nuts  (13). (2)   Position   fuel   filter   assembly   (10)   or   fuel strainer   (11)   on   bracket   (16)   and   secure   with   lock- washers  (9)  and  screws  (8). (3) Install coupling (7), check valve (6) and elbow (5)  on  fuel  line  (4).  Make  sure  arrow  on  check  valve points toward coupling (7). (4)  Connect  fuel  lines  (4,  3  and  2).  Tighten  drain valve  (1)  in  each  filter  assembly  and  strainer  assem- bly. (5) On ASK equipped generators, install right panel assembly (para. 5-6). 4-21. ELECTRIC FUEL   P U M P S .    F U E L   A  N D AUXILIARY  SOLENOID  VALVE. a.   Testing   on   Equipment.   Perform   operational   test for  each  pump  individually.  Each  pump  should  pump at  6  to  7  psi  as  registered  on  an  accurate  fuel  pres- sure   gauge.   Connect   fuel   pressure   gauge   to   output port  of  pump.  Turn  master  switch  to   PRIME  A ND RUN  position.  pressure  gauge  should  register  6  to  7 psi.  Replace  defective  pumps. b. Service (see figure 4-13). On ASK equipped generators, remove  fuel  access  door.  Remove  cover  (1),  gasket  (2)  and strainer (3). Be careful not to lose magnet (4). Every 500 oper- ating  hours  replace  gasket  (2)  and  strainer  (3)  in  both  main pumps  and  auxiliary  pump.  Ensure  that  chamfered  surface  of magnet (4) is up prior to installation of new strainer and gasket. c.  Removal  (see  figure  4-12). (1)  Fuel  Roses.  Tag  and  remove  fuel  hoses  (1,  2, 3 and 4) by unscrewing  at fittings (5, 15 and 16). Keep TO-35C2-3-456-1 TM-05682C-12 hoses  clean  and  plug  to  prevent  contamination.  Dis- connect  electrical  connector  (22)  at  solenoid  valve  (6). (2)  Fuel  Pumps.  Tag  and  disconnect  electrical lead  from  each  fuel  pump  at  connector  on  wiring harness.  Remove  nuts  (7),  lockwashers  (8  and  11)  and screws (9) attaching each pump (12 and 13) and pump lead  (10)  to  bracket  (21)  and  remove  pumps. (3)  Remove  solenoid  valve  (6)  from  fittings  (16 and 17) and remove fitting (5) from solenoid valve. (4)  Remove  fittings  (14,  15,  16  and  17)  from  fuel pumps. Remove nuts (18), Iockwasher (19), screw (20) and  remove  bracket  (21). d.    Installation. (1)   Position   bracket   (21)   on   frame   and   secure with screws (20), Iockwashers (19) and nuts (18). (2)  Install  fuel  fittings  (17,  16,  15,  14  and  5)  in fuel pumps (12 and 13). (3)  Turn  solenoid  valve  (6)  onto  fuel  pump  outlet fittings (16 and 17) and position on fuel pump as shown in  figure  4-12. (4) Install fuel pumps (12 and 13) on bracket (21) and  secure  with  screws  (9),  washers  (8  and  11)  and nuts  (7).  Reconnect  electrical  leads  to  wiring  harness and  fuel  solenoid  valve. (5)  Install  and  tighten  fuel  hoses  (4,  3,  2  and  1). 4-22.  AUXILIARY  FUEL  SOLENOID  VALVE. a.  Test  on  Equipment.  On  ASK  equipped  generators,  remove fuel  access  door  and  perform  the  following  procedures: (1) Ensure output pressure of auxiliary fuel pump is  6  to  7  psi  and  fuel  level  in  set  tank  is  below  1/2 full.   Disconnect   harness   at   solenoid   valve   connector. Place  master  switch  in  PRIME  RUN  and  AUX  position. Ensure   voltage   between   points   A   and   B   on   harness connector   is   24   VDC.   Reconnect   harness   to   solenoid valve.  Test  output  pressure  at  output  side  of  solenoid valve.   Pressure   should   be   same   as   output   pressure of  auxiliary  fuel  pump,  if  not  replace  solenoid  valve. (2)  With  24  volts  dc  applied  across  solenoid  ter- minals   A  and  B,  the  solenoid  should  draw  approxi- mately  1/2  ampere,   if  not  replace  solenoid  valve. 4-23. FUEL SHUT-OFF SOLENOID a. Inspect (on Equipment) (see figure 4-14). On ASK equipped generators, remove right panel assembly (para 5-6). Check that electrical  connections  (1)  are  secure  and  clean.  Check  that  rub- ber  boot  (11  )  is  clean  and  not  broken.  Check  that  governor  and pump  linkage  moves  freely  and  is  clean. b. Test  (on  Equipment)  (see  figure  4-15). (1)  Tag  and  remove  the  solenoid  harness  leads (1).  Figure  4-14. Change 7 4-21