Table 1-2. Repair and Replacement Standards

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