TM 10-3930-653-14&P (3)   Remove cap.  and measure width of gauge (using a scale for measurement) at widest point.  If the difference between   the   maximum   and   width   of   pressed   gauge exceeds  0.03  mm  (0.0012  in),  check  journal  for  out-of- roundness. (4)   If    lubrication    (oil)    clearance    exceeds    pre-scribed limit.  replace parts as required from service parts Under no circumstances should any attempt be made to adjust lubrication  (oil)  clearance  by  using  emery  cloth  on  the portion to which the cap is applied, by using shims.  or by scraping or filing down bushing. Connecting rod bushing specifications Under size Tickness at top of I Crank pin dia. mm (in) bushing mm (in) mm (in) 0 25 1 623 to 1 631 51.711 to 51.724 (0.098) (00639 to 0.0642) (2.0359 to 2.0364) 0 50 1.748 to 1.756 51.461 to 51.474 (0.0197) (0.0688 to0.0691) (2.0260 to 2.0265) 4-2-4-9. CRANKSHAFT (1)   INSPECTION CRANKSHAFT 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 breathe   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 PSI.  Use only with effective chip guarding and personal protective equipment (goggles/shield, gloves, etc.). Thoroughly clean the crankshaft and inspect the pin and journal counterweights (balance  weights)  for  cracks or damage, make sure that the oil seal contact surface is satisfactory   and   that   the   pins   and   journals    are    not scarred or damaged. Fig. 4-60.  Inspecting Crankshaft (2)   JOURNAL AND PIN DIAMETER MEASUREMENT Measure journal and pin diameters for wear using a micrometer.    If  worn  beyond  the  normal  service  (wear) limit  or  if  out-of-round,  correct  them  to  an  appropriate undersize  (For  finishing  dimensions  refer  to  paragraphs on main bearing and connecting rod bushings) Measure at a total of 8 positions: 2 positions in the center parts of the  pins  and  journals  In   which   there   are   no   holes,   2 positions at both ends.  and 2 positions at right angles to both  ends.    Eccentric  wear  Is  determined  as  being  the difference between maximum and minimum measurement values. Fig. 4-61.  Measuring Journal and Pin Diameter Correct to Service lout-of within round/taper) limit Degree of out-of- round and taper 0.01 (0.0004) 0.03 (0.0012) mm (in) 4 - 36