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TM 10-4320-343-14 5.6.4.2   Inspection. a. b. c . d. Do   not   use   dry   cleaning   solvent   without   proper   ventilation   and   clothing. DO  not   smoke   or   use   near   open   flame   or   excessive   heat. Dry   cleaning solvent   is   potentially   dangerous   to   personnel   and   property. Clean   parts in   a   well-ventilated   area. Avoid   inhalation   of   solvent   fumes. Wear goggles   and   rubber   gloves   to   protect   eyes   and   skin. Wash   exposed   skin thoroughly. Flash   point   of   solvent   is   100°F   to   138°F   (38°C   to   59°C)   . Failure   to   obey   this   warning   may   result   in   personal   injury   or   death. Clean   all   parts. Dry  with  compressed  air. Rotate   bearings   (15   and   16)   on   shaft   assembly   (13) Ensure   that   bearings   do not   feel   rough,   gritty   or   loose. Inspect   shaft   for   deformation   of   shaft   journals   or   other   evidence   of   damage. Check   impeller   vane   tip. A   slight   deformation   may   have   occurred   from   use   of steel   bar   during   removal. If   so,    use   a   file   to   remove   burrs. Ensure  that  no f i l i n g s    f a l l    i n t o    i m p e l l e r. 5.6.4.3   Repair. a . Remove   retaining   ring   (17). b . Using  arbor  press,    press   front   bearing   (15)   and   rear   bearing   (16)   off s h a f t    ( 1 8 ). c . Lightly   oil   the   shaft   (18). NOTE Rear   bearing   contains   eight   balls. Check  to  make  certain  bearing  is  correct one. d. Center   rear   bearing   (16)   on   shaft   and   press   on   with   pressure   applied   to   inner race   only. Ensure   that   inner   race   seats   against   shaft   shoulder. e. Turn   shaft   over   with   threaded   (impeller)   end   facing   upward   and   retain   in press. f . Lightly   oil   shaft   (18). Front   bearing   must   be   installed   with    “THRUST   HERE”   marking   on   outer   race facing   upward   toward   threaded   (impeller)   end   of   shaft. NOTE Front   bearing   contains   twelve   balls. Check   to   make   certain   bearing   is correct   one. g. With   “THRUST   HEREn marking   facing   toward   threaded   (impeller)   end   of shaft   (18),    and  front  bearing  (15)  centered  over  threaded  end,  press  bearing onto   shaft. h. Install   bearing   retaining   ring   (17)   into   groove   of   shaft. 5-42

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