TM 5-6115-585-34 NAVFAC P-8-623-34 TO-35C2-3-455-2 TM-05684C/05685B-34 Section III. GENERAL MAINTENANCE 2-6. GENERAL MAINTENANCE. This   section   contains   general   maintenance   instruc- tions   which   are   the   responsibility   of   direct   support and  general  support  maintenance  personnel.  You  will find   that   these   instructions   apply   to   several   assem- blies   or   components.   They   would   otherwise   have   to be   repeated   throughout   the   chapter. 2-7.  GENERAL  MAINTENANCE  PROCEDURES, a.   Work   Guidelines. (1)  Make  sure  the  work  area  is  clean  before  you disassemble   the   pump   or   engine. (2)    Make    sure    that    materials    needed    for    the maintenance   task   are   at   hand.   These   may   include cleaning   solvents,   lubricants,   buckets,   or   other   con- tainers   for   cleaning   or   keeping   components   separated, clean   wiping   cloths,   and,   of   utmost   importance,   the proper   tools. DRY  CLEANING  SOLVENT,  P-D-680  or  P-S- 861,   used   to   clean   parts   is   potentially   danger- ous   to   personnel   and   property.   Avoid   repeated and  prolonged  skin  contact.  DO  NOT  use  near open   flame   or   excessive   heat.   Flash   point   of solvent is 100º to 138° F (38°  to 60°  C). (3)   Clean   the   exterior   of   the   engine   and   pump before   disassembly   to  keep   foreign   matter   from bearings,   gears,   and   other   machine-surfaced   parts which   are   subject   to   scoring   and   other   such   damage. Use  a  cloth  dampened  with  cleaning  solvent  (fed.  spec. P-D-680). Compressed  air  used  for  cleaning  and  drying purposes   can   create   airborne   particles   that may  enter  the  eyes.  Pressure  shall  not  exceed 30   psig   and   use   only   with   adequate   chip guards  and  goggles. (4)   If   compressed   air   is   used   to   clean   parts,   you should   make   sure   it   is   free   of   dirt   and   other   con- taminants. (5)   Protect   disassembled   parts   from   dust,   blowing sand,   and   moisture   which   can   cause   rapid   wear   and deterioration   of   bearings,   gears,   and   other   machine parts. b.   Seals   and   Gaskets.   Replace   seals   and   gaskets   of all   components   disassembled.   This   will   greatly   reduce the   possibility   of   leaking   and   will   help   prevent   the entry   of   dust   and   dirt   after   reassembly. c.   Care   of   Bearings. (1)  Clean  ball  and  roller  bearings  by  placing  them in   a   wire   basket   and   immersing   in   a   container   of fresh   cleaning   solvent.   Agitate   the   bearings   in   the solvent   to   remove   all   traces   of   old   lubricant. (2)  After   cleaning   the   bearings,   dry   them   with clean   compressed   air.   Take   care   to   prevent   spinning the   bearings   when   using   a   compressed   air   jet. (3)  Dip  the  cleaned  bearings  in  clean  engine  oil and   immediately   wrap   them   in   lint-free   paper   to protect   them   from   dust   and   other   foreign   matter. d.   Replacing   Electronic   Components. (1)   Tag   wires   before   removal   to   facilitate   proper reconnection. (2)  When  soldering  use  heat  sink  between  solder- ing  pencil  and  electronic  component  to  prevent  damage to  the  component. (3)   Do   not   use   excessive   heat   when   soldering   on printed   circuit   boards   to   prevent   damage   to   board. e.   Fuel   System   Maintenance.   The   fuel   injectors   and fuel  pump  are  manufactured  to  extremely  tight  toler- ances.   Even   small   amounts   of   dust   or   water   in   the fuel  system  can  damage  these  components.  Conse- quently   it   is   of   great   importance   that   dirt   be   kept   out of  the  fuel  lines  and  fittings  during  disassembly  and assembly.  All  openings  should  be  taped,  plugged,  or capped  immediately  after  disassembly.  If  dirt  does accidentally   enter   a   component,   it   should  be  washed in   clean   fuel   oil   before   reassembly. Section IV. REMOVAL AND INSTALLATION OF MAJOR COMPONENTS 2-8.   CONTROL   CUBICLE. 2-9.  ENGINE  ASSEMBLY. a.   Removal.   Refer   to   Operator   and   Orguizational Matitanance    Manual. a.  Remove.  On  ASK  equipped  generators,  refer  to  the  Operator and  Organizational  Maintenance  Manual,  remove  cover  assembly, and  perform  the  following  steps. b . I n s t a l l a t i o n . R e f e r    t o    O p e r a t o r    a nd Organizational   Maintenance   Manual. (1)  Disconnect  and  remove  batteries. 2-12 Change  6