TM 10-3930-653-14&P 4-2-5. ENGINE ASSEMBLY 4-2-5-1. PRECAUTIONS WARNING Dry  cleaning  solvent  P-D-680  is  toxic and     flammable.          Wear     protective goggles and gloves and use only in a well   ventilated   area.      Avoid   contact with skin, eyes, and clothes and don’t breath vapors.  Do not use near open flame    or    excessive    heat.        If    you become    dizzy    while    cleaning    with solvent, get fresh air immediately and get medical aid.  If contact,  with  skin or clothing is made, flush with water. If   contact   with   eyes   is   made,   wash your eyes with water and get medical aid immediately. WARNING Compressed    air    used    for    cleaning purposes will not exceed 30 OSI.  Use only with effective chip guarding and personal protective equipment (goggles/shield, gloves, etc.). (1)   Thoroughly   clean   all   components   and   make   sure that all oil passages are clear to prevent clogging. (2)   Properly lubricate all sliding or rotating parts such as bushings.  etc.  with engine oil. (3)   As  a  general  rule,  new  packing,  oil  seals,  gaskets, etc.  should be applied at time of reassembly. (4)   Apply   sealant   to   portions   where   there   is   leakage and/or  sealant  was  used  before  disassembly  to  prevent water and oil from leaking. (5)   Make sure that tools, work tables, etc.  are clean and free from dirt, grime and oil. (6)   Provide all parts and tools required for assembly and place   them   in   close   proximity   to   work   area   wherever possible. (7)   Carefully  observe  prescribed  tightening  torques  and tightening sequence where applicable. (8)   Make sure that all components are properly matched by cylinder and are applied according to proper cylinder 4-2-5-2. PISTON AND CONNECTING RODS (1)   ASSEMBLY Assemble  pistons,  piston  pins  and  connecting  rods on the designated cylinder. Fig. 4 -75.  Installing Piston Pin Fig. 4-76.  Assembling Piston and Connecting Rod Note: a. Piston pin is pressed into connecting rod, with fitting force of     9.5     to     1.5     tons.          When pressing piston pin into connecting  rod,  apply  engine  oil to pin and small end of connecting rod. b. Arrange so that oil jet of connecting rod big end is directed    toward    right    side    of cylinder block. c. Be     sure     to     install     piston     in cylinders     with     front     mark     of piston     head     toward     front     of engine. d. Arrange    connecting    rods    and caps   so   that   cylinder   numbers face in same direction. 4 - 42