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ARMY TM 9-2815-252-24 AIR FORCE TO 38G1-92-2 FIGURE 3-41.  Main Bearing Tool (5) Install spacer and nut onto bolt. (6) Use a suitable wrench to tighten nut until bearing shells (7) are withdrawn. 3-32.2.   Installation a. Install bearing (7, FIGURE 3-40) in main bearing housing (3) as follows: (1) Mount housing (3) in a soft-jawed vice with small oil feed hole facing up. (2) Place large tapered collar of main bearing tool (317-50111) on a bench with pilot facing up. (3) Place new bearing shells (7) into collar ensuring one oil feed hole is in line with pilot pin of collar and end of shell is in line with the mark on collar face. (4) Place driver onto collar with cutout on driver located over collar pilot pin. (5) Push driver sufficiently until bearings (7) come out other side of collar to provide a lead in. (6) Install  assembly  into  housing  (3)  from  oil  seal  side  (crankcase  outside  face)  with  pilot  pin  in  line  with  oil feed hole in housing. (7) Place bolt through assembly. (8) Install bridge, spacer, and nut onto bolt. (9) Tighten nut until driver is against face of collar. (10) Remove tool. (11) that oil hole in bearing shell (7) is correctly aligned with oil feed hole in housing (3). b. Lightly grease steel back of thrust bearing (5) with general purpose grease (630AA) and position it in housing (3). Ensure that tab is correctly located and copper face will be toward crankshaft. c. Coat  both  sides  of  a  new  main  bearing  housing  shim  (4)  with  sealing  compound  (MIL-R-46082).    Install  it  to housing (3) with flat side towards crankcase. 3-75


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