TM  10-3930-643-34 GENERAL  SUPPORT  ENGINE,  FUEL,  EXHAUST  AND  COOLING  MAINTENANCE.  (cont) 13-14. Turbocharger. (Sheet 7 of 10) CLEANING/INSPECTION  (cont) 28. 29. 30. 31. 32. 33. 34. Inspect wheel assembly (10) and impeller  (11)  for  damaged  or distorted vanes for contact with housings. Spacing  between  vanes  and contour must be uniform. Check cracked or bent blades. If any of above conditions are evident, replace. Do  not  attempt  to straighten  blades. Inspect  turbine  housing (8) for cracks  or  excessive  scoring  in  outlet contour. Inspect compressor housing (4) for damage. Inspect bearing surfaces in wheel assembly  (10)  for  excessive  scratches and wear. If shaft is only slightly scratched, it may be reused. Do not grind or polish shaft as balance will be affected. Inspect bearings (23 and 26) for scratches or worn surfaces. Replace if tin plate is worn off. Inspect bearing bores in center housing (28) for worn or scored surfaces. Replace if bores show signs of excessive scoring or wear. Inspect flange halves which mate to compressor housing (4) and turbine housing (8). Replace if flange halves are damaged. Inspect all parts. Refer to para- graph 2-9. Go to sheet 8 13-92

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