TM 10-3930-671-24 Re-locate  the  indicator  to  contact  the  housing  bore  and check this in the same manner.  The same runout limits prevail. REASSEMBLING ENGINE In    the    foregoing,    we    have    outlined    procedures    for checking,  repairing  or  replacing  the  many  wearing  parts in the engine. In    most    cases,    the    instructions    have    covered    the reassembly    of    parts    or    subassemblies    made    up    of several parts. When reassembling pistons and connecting rods, use a good  ring  compressor  and  oil  the  bores  thoroughly.    A hammer handle may be used to bump the pistons out of the ring compressor in-to the c linder bore. NOTE The  pistons  have  offset  piston  pins. Be  sure  to  install  pistons  with  notch or arrow in top toward the front of the engine. Once   more,   we   call   attention   to   care   demanded   to prevent   connecting   rods   damaging   the   cylinder   bore finish and at the same time as they are assembled over the crank pin, locate them carefully in order to protect the bearing surfaces. Always lubricate the bearings with clean engine oil when assembling, and tighten them to the torque specified. INSTALLING HEAD 1. Make  sure  that  gasket  contact  surfaces  on  the head   and   block   are   clean,   smooth   and   flat. Check   flatness   with   straight   edge   and   feeler gauge   in   three   positions   lengthwise   and   five crosswise. The maximum permissible is 0.10mm   (.004")   low   in   the   center   lengthwise, gradually     decreasing     towards     the     ends,     or 0.076mm  (.003")  crosswise  or  in  localized  low spots.  If these limits are exceeded, replace the cylinder head. F-186