TM 5-3810-207-20/TO 36C23-3-37-12 Figure 10.  Distributor, removal and installation. obtain a reading on the meter.  When an instrument is used, test another coil which is known to be good.  The two coils should have the same reading on the meter. Note. Do  not  touch  the  test  instrument  to the   unit   as   the   case   is   internally grounded   and   a   faulty   reading   will occur. d. Reassembly and Installation. (1) Reassemble the distributor  in  the  reverse order illustrated on figure 11. (2) Adjust  the  points  as  instructed  on  figure 11. (3) Lubricate  the  distributor  (LO  5-3810-207- 20). (4) Install the distributor (par.  74). e. Engine Timing. (1) Loosen screw and raise cover (fig. 12). (2) Disconnect  spark  plug  cable  from  spark plug installed in number 1 cylinder. (3) Connect    a    neon    timing    light    between number 1 spark plug and cable. (4) Loosen   the   distributor   mounting   screws and start the engine. (5) Hold the timing light directly in front of the flywheel opening in the flywheel housing. (6) Rotate   the   distributor   in   either   direction until the timing mark alines with the center of    the    hole    in    the    flywheel    housing. Tighten  the  distributor  mounting  screws. Repeat adjustment as necessary. (7) Stop   the   engine,   disconnect   the   neon light,  and  connect  the  spark  cable  to  the spark plug. (8) Close the cover and tighten the screw (fig. 12). 76.  Spark Plugs and Cables a. Removal. (1) Remove  all  dirt  and  foreign  matter  from the  cylinder  head  around  the  spark  plug openings. (2) Remove  the  cables  and  spark  plugs  as instructed on figure 13. b. Cleaning and Inspection. (1) Clean  the  spark  plugs  -and  cables  with  a lint-free cloth dampened with an approved cleaning     solvent     and     dry     thoroughly. Clean    the    spark    plug    points    with    an approved spark plug cleaning machine. (2) Inspect     the     insulators     for     chips     and cracks.    Replace  plugs  having  defective insulators. (3) Inspect the electrodes for burns, pits, and alinement.  Replace defective plugs. Note. The   outside   or   grounded   electrode must    be    directly    alined    with    the inside or insulated electrode. (4) Inspect the spark plug cables for corrosion,  frayed  or  broken  insulation  or shielding, and proper connection. Replace defective cables. 38