TM 10-3930-660-34 3-8. CRANKSHAFT - REPLACE/REPAIR (Cont’d) 4.   CHECK CRANKSHAFT END PLAY. NOTE End play is controlled by the dimensions of the thrust bearing and crankshaft journal at the number 6 main bearing position. a. Measure   crankshaft   end   play   using   a   dial indicator as shown in this illustration. b. Push  crankshaft  forward,  then  toward  rear  of engine.    With  a  new  thrust  bearing,  end  play limits must not exceed 0.005 - 0.010 inch. c. If end play measurement is greater than 0.010 inch, install a larger size thrust bearing. 5.   DETERMINE CONNECTING ROD BEARING CLEARANCE.  USE NEW BEARINGS. a. Turn    crankshaft    until    two    connecting    rod bearing journals are bottom center. b. Be  sure  crankshaft  journals,  bearing  area  on connecting rods, inner surface of connecting    rod    caps,    and    connecting    rod bearings are dry and clean. c. Put new upper bearing half (10) on connecting    rod    (9)    and    pull    piston    and connecting  rod  assembly  against  crankshaft journal.      Bearing   tabs   must   be   in   the   tab grooves of the connecting rod (9). 3-63