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TM 5-4210-220-34 3-8. ENGINE Continued 3-8.3 Blower Continued NOTE When   installed,   the   inside   flats   of   the sleeve  will  be  parallel  to  the  center  line of the housing. (72)   Lubricate the oil seal rings in the carriers on the   rotor   shaft   with   engine   oil   (Item   17, Appendix B). (73)   Position each oil seal rings in Its  carrier  so the ring protrudes from its groove the same amount on each side. (74)   Position the rear end plate (7) over the top of the rotor shafts with the inner face of the end   plate   facing   the   rotors   and   the   TOP side of the  end  plate  facing  the  top  side  of the blower housing. (75)   Lower  the  end  plate  (7)  straight  over  the  rotor  shafts  until  the  dowel  pins  (13)  in  the  end  plate  contact  the blower housing (28). Then, carefully work the dowel pins into the dowel pin holes in the housing and the oil seal rings into the collars. Push the end plate tight against the housing (28). If necessary, tap the end plate lightly with a plastic hammer. (76)   Insert the two fillister head screws (27) through the rear end plate (7) and thread them into the housing (28). Tighten the screws to 10 ft lb (14 Nm). Do not use lockwashers on these screws. (77)   Check  the  relationship  of  the  blower  end  plates  to  the  housing  at  the  cylinder  block  side  of  the  blower assembly. The protrusion of the housing with respect to the end plates should not be more than 0.0005 in. (.013  mm)  above  to  0.0065  in.  (0.165  mm)  below  the  end  plate.    Excessive  protrusion  could  distort  the housing when the end plate to cylinder block bolts are tightened and cause rotor to housing interference. NOTE To install the ball bearings on the rotor shafts and in the end plate, carry out steps 78 thru 81 following. (78)   With  the  blower  still  supported  in  a  vertical position  on  the  two  wood  blocks,  lubricate one of the ball bearings (23) with engine oil (item  17,  Appendix  B).   Start   the   bearing, numbered  end  up,  straight  on  one  of  the rotor shafts. (79)   Place    installer    J6270-13    on    top    of    the bearing and tap the bearing straight on the shaft and into the rear end plate (7). 3-120

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