Quantcast CRANKSHAFT ASSEMBLY - CONTINUED

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TM   5-2815-241-34&P CRANKSHAFT ASSEMBLY - CONTINUED ACTION LOCATION ITEM REMARKS b. Using  circular-type  gear  puller,  pull crankshaft  gear  from  crankshaft. c.  Remove  machine  key. Discard. INSPECTION 2. 3. Crankshaft (1) Crankshaft (1) Connecting  rod journals  (4) a. Inspect for cracks. Discard if cracked. b. Inspect  for  and  using  depth  micrometer, measure depth of scratches and nicks on bearing  journals. If  scratches  and  nicks  exceed  depth  of 0.020  inch  (0.508  mm),  discard crankshaft.  If  depth  of  scratches  and nicks  is  0.020  inch  (0.508  mm)  or less,  tag  for  grinding. a. Using  3-  to  4-inch  micrometer,  mea- sure  diameter  of  six  connecting  rod journals in several places. Check for out-of-round  condition.  Connecting  rod journals  should  be  3.122  to  3.125 inches  (79.293  to  79.375  mm). Tag crankshaft connecting rod jour- nals  for  grinding  if  worn  smaller  than 3.122  inches  (79.298  mm)  or  more than  0.002  Inch  (0.05  mm)  out  of round. b. Using  3-  to  4-  inch  micrometer,  mea- sure  six  connecting  rod  journals  for taper  across  length  of  journals. Tag for grinding if taper exceeds 0.0005  inch  (0.0127  mm). T A    2 4 2 4 8 3 2-215


 


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