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Page Title: INSPECTION
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TM 5-4210-220-34 2-20. REAR AXLE - Continued (8) To  replace  input  shaft  (23)  or  bearings  (24 and   25),   remove   particular   bearing   cone from shaft using a press and suitable arbor. (9) If  bearing  (24)  is  replaced,  remove  bearing cup     from     differential     housing     using     a suitable puller. (10) If  bearing  (25)  is  replaced,  remove  oil  seal (26)  and   remove   bearing   cone   (25)   from bearing    cap    (21)    using    a    press    and    a suitable arbor. (11) If   output   shaft   bearing   (35)   is   replaced,. (see    procedure    a.        step    6    preceding), bearing cup (33) must be replaced.  To  do this,     remove     bearing     cup     from     power divider cover (12) using a suitable puller (12) If  pinion  shaft  support  bearing  is  replaced, (see 2-21.2 REPAIR), remove retaining ring (36)   and   bearing   race   (35)   from   power divider cover (12).  Use a suitable puller to remove bearing cup. 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). Death or serious injury could occur if compressed air is directed against the skin.  Do not use compressed air for cleaning or drying unless the pressure is/has been reduced to 30 psi (2.11 kg/cm2) or less.  When working   with   compressed   air,   always   use   chip   guards   eye   protection   and   other   personal   protective equipment. (1) Clean all power divider components with dry cleaning solvent (item 10, Appendix B).  Blow components dry using compressed air. (2) Inspect all parts for notches, visible steps or grooves created by wear.  Look for pitting or cracking along gear contact lines.  Scuffing, deformation, or discoloration are signs of excessive heat usually related to low lubricant levels or improper lubrication practices. (3)    Before  reusing  a  gear  set,  inspect  teeth  for  signs  of  excessive  wear.    Check  tooth  contact  pattern  for evidence of incorrect adjustment. (4) Inspect machined surfaces of cast or malleable parts.  They must be free of cracks, scoring, and wear. Look  for  elongation  of  drilled  holes,  wear  on  surfaces  machined  for  bearing  fits  and  nicks  or  burrs  in mating surfaces. 2-269

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