TM-5-4310-389-14 Table 4-4.  Cylinder Head (Continued) Dimension Tolerance (min./max.) Item Inch (mm) Inch (mm) Nominal Wall Thickness 0.0974 (2.474) 0.0002 ±(.006) Number of Oversizes 6 Each Oversize 0.0049 (.125) Radial Clearance (normal) 0.0024 (.06) 0.0048 (.122) Radial Clearance Limit Value (replacement governed by oil pressure) 0.0118 (.3) Journals for Crankshaft Center Thrust Bearing Nominal Diameter 2.7559 (70.0) 0.0004 -(.010) 2.7559 (70.0) 0.0011 -(.029) Number of Undersizes 6 Each Undersize 0098 (.25) Minimum Diameter for Undersize Bearings 2.6969 (68.5) 0.0004 -(.010) 2.6969 (68.5) 0.0011 -(.029) Length of Journal 1.4567 (37.0) 0.0015 +(.039) Radius of Fillet 0.1772 (4.5) 0.0079 -(.2) Hardness Normal - HRc 58.0 ±3 Hardness Limit Value 50 Crankshaft Thrust Bearing Diameter of Bore 2.9331 (74.5) 0.008 +(.019) Number of Undersizes 6 Each Undersize 0.0098 (.25) Inside Diameter (normal) 2.7575 (70.040) 0.0017 +(.043) Nominal Wall Thickness 0.0884 (2.244) 0.0002 ±(.005) Number of Oversizes 6 Each Oversize 0.0049 (.125) Radial Clearance (normal) 0.0020 (.05) 0.043 (.11) Radial Clearance Limit Value (replacement governed by oil pressure) 0.0012 (.03) Bearing Width Outside Distance of Stop Rings 1.4508 (36.85) 0.0055 -(.139) Thrust Half-Rings (blower side) Nominal Inside Diameter 3.1102 (79.0) 0.0118 +(.3) Outside Diameter 3.7402 (95.0) 0.0014 -(.036) 3.7402 (95.0) 0.0152 -(.386) 4-13