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TM   5-2815-241-34&P CYLINDER  BLOCK  -  CONTINUED ACTION LOCATION ITEM REMARKS CLEANING/INSPECTION   -   CONTINUED WARNING Due to excessive weight, assistance will be needed to prevent personal injury when lifting heavy parts. CAUTION Inspection of cylinder block must be performed on a flat surface to prevent distortion. Do not  leave  on  engine  repair  stand  (page  2-11). NOTE Decision to salvage or discard cylinder block due to crack size or location will be left up to  the  repair  facility. 11. Cylinder   block   (1) a. Using  leak-detection  dye,  inspect  for cracks,  porosity,  or  leaks. If  cracks,  porosity,  or  leaks  exist, and  cylinder  block  is  deemed  unre- pairable,  discard  cylinder  block. b. Inspect  cylinder  block  mating  surface (2),  near  water  passage  holes  (3),  for pits  and  scratches. If  pits  and  scratches  are  more  than 0.003  inch  (0.08  mm)  deep  in  the area 1/18 to 3/32 inch (1.59 to 2.38 mm)  near  water  passage  holes,  tag water  passage  hole  for  sleeving, step  24. If  pits  and  scratches  are  within  1/32 to  3/32  inch  (0.79  to  2.38  mm)  from cylinder  sleeve  counterbore  (4),  tag cylinder  block  for  resurfacing,  steps 25  and  26. c. Using  24-inch  (60.9  mm)  ruler,  check distance  A  from  cylinder  head  mating surface  (2)  to  main  bearing  bore centerline   (5). If  measurement  varies  more  than 0.002  inch  (0.05  mm)  throughout length  of  cylinder  block,  tag  cylinder block  for  resurfacing,  steps  25 and  26. 2-144


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