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DISASSEMBLY (cont) - TM-5-4210-220-34_124
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TM-5-4210-220-34 Truck Firefiighting 1000 GPM Multipurpose Model 2500L Manual
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inspection - TM-5-4210-220-34_126
TM 5-4210-220-34 2-13. FIRE PUMP - Continued (12)  Remove the extractor tool assembly (1, Appendix D) and the thread protector tool (4, Appendix D). (13)  Pull the shaft assembly (38) from the bearing housing (26), and remove tapered roller bearing (23) from the opposite end of bearing housing.  Make sure shaft is square to bearing housing during removal.  Use care so as not to damage oil finger (30) and revolution counter gear (33) during shaft removal. (14)  Install the pump shaft support fixture (3, Appendix D) horizontally in a vise.  Lower the  shaft  into  the  pump shaft support fixture engaging the splines on the shaft with the splines in the tool. (15)  Straighten the tab washer (30).  Remove locknut (29), tab washer (30)  and  oil  finger  (31)  from  pump  shaft (38). (16)  Loosen the setscrew (32) from the revolution counter gear flange, and slide revolution counter gear (33) from shaft (38). (17)  Separate  the  front  seal  housing  (43)  from  the  front  bearing  mount  (35).    Avoid  burrs  or  scratches  to  either face  during  separation.    Remove  burrs  or  scratches  using  emery  cloth  (item  16,  Appendix  B)  prior  to reassembly. (18)  Lift the front bearing mount (35) from shaft (38). (19)  Remove pump shaft from pump shaft support fixture (3, Appendix D). (20)  To remove bearing (36), first install thread protector tool (4, Appendix D) on the drive flange end of the pump shaft (38).  Position pump shaft vertically allowing thread protector tool to rest on flat bench top. (21)  While supporting pump shaft vertically, position bearing removing tool (2, Appendix D) over the shaft.  Make sure bearing removing tool rests on inner race of bearing. Damage to shaft sealing surfaces will warrant replacement of pump shaft.  Do not scratch or mark sealing surfaces. (22)  Carefully but firmly tap the bearing removal tool (2, Appendix D) until the bearing (36) is free of shaft (38). INSPECTION WARNING Dry cleaning solvent P-D-680 (safety or Stoddard’s solvent) is potentially dangerous.  Avoid repeated and prolonged  breathing  of  vapors  and  skin  contact  with  the  liquid.    Do  not  use  near  open  flame,  arcing equipment or other ignition sources.  Always wear eye protection and protective clothing.  The flash point of P-D-680 is 100 to 138 deg.  F (30 to 59 deg.  C). 2-125

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