TM 10-3930-669-20 CAUTION To prevent corrosion, parts should be dipped in rust preventive within two hours of degreasing. h. Degreasing  Machine.    A  degreasing  machine  may  be  used  to  remove  heavy  grease  and  oil  from  metal parts. WARNING • Drycleaning   solvent   (P-D-680)   is   TOXIC   and   flammable.      Wear   protective   goggles   and gloves; use only in a well-ventilated area; avoid contact with skin, eyes, and clothes; and do not breathe vapors.  Keep away from heat or flame.  Never smoke when using solvent; the flashpoint for type I drycleaning solvent is 100F (38°C) and for type II is 138°F (50°C).  Failure to do so may result in injury or death to personnel. • If  personnel  become   dizzy  while  using  cleaning  solvent,  immediately  get  fresh  air  and medical help.  If solvent contacts skin or clothes, flush with cold water.  If solvent contacts eyes, immediately flush eyes with water and get immediate medical attention. • Never use fuel to clean parts.  Fuel is highly flammable.  Serious personal injury could result if fuel ignites during cleaning. i. Passages.    After  degreasing,  check  all  oil  passages  and  cavities  for  dirt  or  blockage  before  coating  with lubricating oil.  Run a thin, flexible wire through oil passages to make sure they are not clogged.  Use a pressure spray gun and drycleaning solvent (P-D-680) to clean dirty passages. j. Electrical  Parts.    Electrical  parts,  such  as  coils,  junction  blocks,  and  switches,  should  not  be  soaked  or sprayed  with  drycleaning  solutions.    Clean  these  parts  with  a  cleaning  cloth  moistened  with  drycleaning  solvent  (P-D- 680). CAUTION Do not use soap or alkalis for cleaning tank interiors. k. Oil and Fuel Tanks.  Pay special attention to all warnings and cautions when working on forklift fuel tank. Oil tanks and fuel tanks should be flushed, using a spray gun and drycleaning solvent (P-D-680). I. Battery.    Exterior  surfaces  of  the  electrical  system  and  battery  should  be  cleaned  with  a  weak  solution  of baking soda and water.  Apply solution with a bristle brush to remove corrosion.  Pay special attention to all warnings and cautions when working on the battery. m. Hydraulic System.  When cleaning hydraulic system parts, use drycleaning solvent (P-D-680).  Clean and dry  parts  thoroughly  to  make  sure  no  solvent  residue  remains.    If  a  coating  preservative  is  required  before  assembly, apply a light film of lubricant.  This lubricant must be of the same type used in the forklift's system. 2-491