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inspection - TM-5-4210-220-34_126
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TM-5-4210-220-34 Truck Firefiighting 1000 GPM Multipurpose Model 2500L Manual
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ASSEMBLY (cont) - TM-5-4210-220-34_128
TM 5-4210-220-34 2-13. FIRE PUMP - Continued (2)     After  washing,  dry  all  components  using  compressed  air.    Do  not  allow  bearings  to  spin  while  drying  with compressed air. (3)     Inspect bearing housing for cracks, stripped threads, or warped mating surfaces. (4)     Inspect bearings as detailed in para.  2-7.  If tapered bearing is damaged, replace the bearing and outer race as a pair. (5)     Examine pump shaft for nicks, scratches, damaged splines, damaged threads or corrosion. (6)     Examine bearing mount and seal housings for cracks, corrosion or warped mating surfaces. (7)     Replace all gaskets and seals. (8)     Inspect locknuts for damaged threads. (9) Inspect tab washer for missing tabs or wear. (10)  Inspect fulcrum pin bushings and fulcrum pin for wear or corrosion. (11)  Evidence of damage of any kind is cause for rejection.  Replace components or assembly as required. ASSEMBLY Damage  to  shaft  sealing  surfaces  will  warrant  replacement  of  pump  shaft.    Do  not  scratch  or  mark  sealing surfaces. (1)     To  install  bearing  (36)  onto  shaft  (38),  position  thread  protector  tool  (4,  Appendix  D)  onto  impeller  end  of pump shaft (38). (2)     Hold the pump shaft vertically, splined end downwards, resting on the thread protector tool (4, Appendix D). (3)     Make sure bearing surface is clean, otherwise bearing may not fit squarely on shaft.  Apply a light coating of grease (item 16, Appendix B) to the bearing surface. (4)     Slide the bearing (36) down the pump shaft (38) with its narrow face upmost.  Using bearing installing tool (8, Appendix D), tap top of tool with hammer until beating is fully seated against pump shaft shoulder.  Remove bearing installing tool. (5)     If  bearing  (36)  was  replaced,  it  will  be  necessary  to  press  outer  race  from  bearing  mount  (35)  and  replace outer race. (6) If bearing (23) requires replacement, remove bearing outer race from bearing housing (26) and replace with new outer race. (7)     Slide  bearing  mount  (35)  and  new  gaskets  (34  and  39),  one  on  each  side,  onto  pump  shaft  (38).    Allow bearing mount to rest on bearing (36).  Make sure gaskets do not cover the oil drain area on the facing of the bearing mount.  If necessary, cut a small section of the gasket away. 2-127

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