Table  1-2.  Repair  and  Replacement  Standards  -(Cont) Manufacturer’s Maximum dimensions    and allowable tolerances   in wear  and inches clearance Components Minimum Maximum Crankshaft Journal   diameter   for   connecting   rods 2.7470 2.7485 0.002 Journal   diameter   for   main   bearing 3.2465 3.248 0.002 Width  between  connecting  rod  journal  checks 1.562 1.565 0.003 Width  of  main  bearing  journals Front 2.147 2.167 0.020 Intermediates 1.685 1. 689 0.004 Center 2.061 2.063 0.002 Rear 2.014 2.017 0.003 Crankshaft   end   clearance 0.007 0.013 0.008 Separate   type   thrust   flanges Available   in   standard size   and   0.005,   0.010, 0.015  oversize - - - - Crankshaft   journals   may   be   ground 0.002,  0.010,  0.020  or 0.040   undersize - - - - Fit   of   crankshaft   gear   on   crankshaft 0.001 0.003 i n t e r f e - Main  bearings: r e n ce Bore   of   front,   intermediate,   center,   and   rear bearing   (with   capscrews   tightened   to   specified torque) 3.2499 3.2511 0.0038 Diameter   of   crankshaft   main   bearing   journals 3.2465 3.248 0. 002 Bearing-to-journal   clearance   at   front,   inter   - mediate,   center,   and   rear   bearings   (with   cap- screws   tightened   to   specified   torque) 0.0019 0.0046 0.0034 Overall   length   of   main   bearings Front  and  Intermediate 1.432 1.442 0.010 Center 1.682 1.692 0.010 Rear 1.682 1.692 0.010 Undersize   bearings   available   for   service 0.002,   0.010,   0.020   and 0.040 1-37