TM9-2320-363-20-1 IGENERALCLEANING INSTRUCTIONSI 1. 2. 3. 4. 5. WARNING l    Cleaning solvents may be toxic to skin, eyes, and respiratory tract. Skin and eye protection are required. Avoid   repeated or   prolonged    contact.    Good general ventilation is    normally adequate. Failure to   heed    this   warning    could result   in   serious injury to   personnel. l    Never use    gasoline to    clean parts. Gasoline is    highly flammable. Serious personal    injury   could   result   if  fuel    ignites    during   cleaning. CAUTION l    Petroleum solvents may damage parts that are in    contact with hydraulic fluids. l    TO prevent  damage to  equipment,   do    not  clean   tires,   lubricant   seals, rubber hoses,    or   electrical    components with   solvent    mixture. Cleaning Solvents. Use   only   approved    cleaning solvents    to   clean    parts. Drycleaning solvent SD-2 is   commonly    used.  Always  work  in   a   well-ventilated area. WARNING Compressed air   used   for   cleaning and    drying    purposes shall    not   exceed 30 psi    (207 kPa). Use only with effective chip guarding and personal protective equipment (goggles/shield, gloves, etc.). Failure to    do    so    could result in serious    injury   to   personnel. Removing Deposits.    After   soaking    parts    in   solvent, wash    away    deposits    by   flushing    or spraying.    Where necessary, brush   with   a   soft-bristle brush    moistened in   solvent. Use compressed air   to   dry   all   parts,    except    bearings. Bearings must   be   allowed to   air   dry. Tools. Do   not   use   abrasive    wheels, or   compounds in   cleaning parts,    unless    called    for   in detailed  instructions. These   procedures  may   weaken   a   highly   stressed    part. Ball   and   Roller    Bearings.    When    cleaning ball    or   roller   bearings, place    them    in   a   basket and suspend   them    in   a   container of   drycleaning solvent. If   needed, use    a   brush   to   remove bearing before    solid   particles    are   removed    to   prevent damaging races    and   balls.    When bearings have been  cleaned,  coat  them  lightly   with   lubricating    oil   to   remove    solvent.    Refer    to   TM    9-214 for additional    instructions   on   cleaning    bearings. Rubber    Parts.    Do   not   clean    O-rings    or   other rubber    parts    in   drycleaning solvent. Clean by washing   with    a   mild   solution   of   soap    and   water. Wipe    with   a   clean, dry,    lint-free cloth. 2-21