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Page Title: Table 3-1. Main Bearing and Journal Dimensions.
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TM 5-2420-222-34 3-8. CRANKSHAFT MAINTENANCE (Con’t). Table 3-1.  Main Bearing and Journal Dimensions. Connecting Rod Journal Main Bearing Journal Bearing Size In Inches (mm) Diameter In Inches (mm) Diameter In Inches (mm) Standard 2.7480-2.7490 3.1230-3.1240 (69.7792-69.8246) (79.3242-79.3496) 0.002 (0.0508) 2.7480-2.7490 3.1230-3.1240 Undersize (69.7992-69.8246) (79.3242-79.3496) 0.010 (0.254) 2.7470-2.7480 3.1220-3.1230 Undersize (69.7738-69.7992) (79.2988-79.3242) 0.020 (0.508) 2.7460-2.7470 3.1210-3.1220 Undersize (69.7484-69.7738) (79.2734-79.2988) 0.030 (0.762) 2.7450-2.7460 3.1200-3.1210 Undersize (69.7230-69.7484) (79.2480-79.2734) CAUTION Ensure that connecting rod bearing cap is installed on same connecting rod from which  it  was  removed.    Failure  to  do  this  may  cause  Incorrect  inside  diameter measurement and damage to parts. 21. Slide  upper  sleeve  bearing  half  (10)  into  position  on  connecting  rod  (11).    Ensure  that  tang  on  upper  sleeve bearing half fits in locking groove in connecting rod. 22. Slide lower sleeve bearing half (4) into position in connecting rod bearing cap (5).  Ensure that stampings line up as noted during removal. 23. Position connecting rod bearing cap (5) and assembled lower sleeve bearing half (4) in place on connecting rod (11). 24. Coat threads of two bolts (7) with engine oil.  Install two bolts and washers (6) in connecting rod bearing cap (5) and connecting rod (11).  Torque bolts to 65 lb.-ft.  (88 N.m). 25. Using rod measuring kit, measure inside diameter of upper and lower sleeve bearing halves (10 and 4).  Diameter must be 2.7502-2.7522 in.  (69.8551-69.9059 mm). 26. Subtract largest measurement for connecting rod bearing journal taken in step 7 from measurement taken in step 25.  Difference is clearance. NOTE If  one  connecting  rod  bearing  Is  replaced,  all  connecting  rod  bearings  must  be replaced. 27. Clearance  must  be  0.0012-0.0062  in.    (0.0305-0.1575  mm).    If  clearance  is  not  within  specification  and  mating Journal is within specification, replace upper and lower sleeve bearing halves (10 and 4) in accordance with Table 3-1. 3-52

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