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Home >> Toyota >> 1966 >> Crown Not Available Trans >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> TOYOTA Engines - (3R-B & 3R-C Engines) 4 Cylinder >> 1965-70 TOYOTA (3R-B & 3R-C Engines) 4 Cylinder >> Valve Spring Removal

Valve Spring Removal

  1. With cylinder head removed, compress valve spring with a valve spring compressor. Remove valve keepers and release spring compressor. Remove spring retainer and inner and outer springs.
  2. Check valve spring squareness with a steel square. Replace spring if distance between top of spring and square is more than 0.063" (inner) and 0.074" (outer).
  3. Check valve spring free length. If free length is less than 1.72" (inner) and 2.09" (outer), replace springs.
  4. Check valve spring tension at installed height (see specifications ) in a spring tester. If tension of exhaust springs is less than 13.4 lbs. (inner) and 47.3 lbs. (outer), replace exhaust springs.
  5. Check intake springs tension. If tension is less than 14.7 lbs. (inner) and 53.9 (outer), replace intake springs.
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