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TM 5-2815-241-34&P CYLINDER  HEAD  -  CONTINUED ACTION LOCATION ITEM REMARKS INSPECTION  -  CONTINUED 21 . Valve spring (1) a. Inspect  for  distortion,  cracks,  breaks and  missing  or  collapsed  coils. If  valve  spring  Is  collapsed,  broken, cracked, or distorted, discard valve spring. b. Check valve spring free length. Approximate  free  length  is  2.685 inches  (68.199  mm).  If  valve  spring does  not  meet  this  specification, discard  valve  spring. WARNING Extreme care must be taken when releasing springs under pressure. Injury to personnel could  result. c. Using  valve  spring  tester  (2),  test valve spring tension. Apply  load  to  valve  spring  tester. If valve spring compresses to length of  1.724  inches  (43.789  mm)  before load  reaches  143  pounds  (94.895 kg),  discard  valve  spring. T A    2 4 2 4 6 3 2-190


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