TM    5-2815-241-34&P CYLINDER  BLOCK  -  CONTINUED ACTION LOCATION ITEM REMARKS d. Using  6-  to  7-inch  inside  micrometer, check  cylinder  sleeve  lower  bore diameter  B. If  diameter  is  greater  than  6.126 inches  (155.80  mm),  tag  cylinder block  for  repair  sleeve,  steps  29 thru 35. e. Inspect cylinder sleeve counterbore (4) for  damaged  or  cracked  counterbore ledge  (6). If  damage  or  crack  can  be  repaired  by enlarging  and  installing  salvage sleeve,  tag  cylinder  sleeve  counter- bore  for  installing  salvage  sleeve, steps  57  thru  63. If  damage  or  crack  cannot  be  repaired by  enlarging  and  installing  salvage sleeve,  discard  cylinder  block. f. Check  cylinder  head  capscrew  threads for   damage. If  damage  exists,  tag  for  thread  re- pair,  step  27. TA  242429 Change  1 2-145