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Home >> Mazda >> 1997 >> 626 ES, Standard >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> 2.5L V6 >> Overhaul >> Cylinder Head >> Camshaft

Cylinder Head: Camshaft

  1. Visually inspect camshaft gears. If helical gear is defective, replace camshaft. If friction gear is defective, replace friction gear. Ensure matching marks are aligned. Tighten lock nut to specification. See TORQUE SPECIFICATIONS .
  2. Inspect remaining components for damage. Measure camshaft journal diameter, lobe height and runout. Replace camshaft if not within specification. See CAMSHAFT  under ENGINE SPECIFICATIONS.
  3. With HLAs removed from cylinder head, install one camshaft in cylinder head without camshaft bearing caps. Check camshaft end play. Install Plastigage on camshaft journals and install bearing caps and tighten to specification. See TORQUE SPECIFICATIONS .
  4. Remove bearing caps and measure bearing oil clearance. Repeat procedure on remaining camshaft. Replace camshaft and/or cylinder head if end play or oil clearance is not within specification. See CAMSHAFT  under ENGINE SPECIFICATIONS.
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