LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 209 (Engine Mechanical) >> Removal & Installation >> Camshaft >> Inspection

Removal & Installation: Camshaft: Inspection

WARNING: This page is about a different car, the 2002 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect components for defects and damage. Check camshaft journal outside diameter, lobe height and journal runout. Replace camshaft if not within specification. See CAMSHAFT  table under ENGINE SPECIFICATIONS.
  2. To check journal oil clearance, install camshafts in cylinder head one at a time, without lifters. Using Plastigage, check camshaft oil clearance. Tighten camshaft bearing cap bolts to specification, in sequence. See Figure. See TORQUE SPECIFICATIONS . DO NOT turn camshaft.
  3. Remove camshaft, and check thickness of Plastigage to determine oil clearance. Replace camshaft and/or cylinder head and bearing caps if oil clearance is not within specification. See CAMSHAFT  table under ENGINE SPECIFICATIONS.
  4. Check camshaft end play with camshaft bearing cap bolts tightened to specification. Replace camshaft and/or cylinder head and bearing caps if end play is not within specification. See CAMSHAFT  table under ENGINE SPECIFICATIONS.
    NOTE: Camshaft end play thrust is determined by front bearing cap installation.
  5. Install both camshafts in cylinder head without sub-gear installed on exhaust camshaft. Tighten camshaft bearing cap bolts to specification, in sequence. See Figure. See TORQUE SPECIFICATIONS . Check gear backlash between camshaft gears.
  6. Replace intake camshaft drive gear and exhaust camshaft if gear backlash exceeds specification. See CAMSHAFT  table under ENGINE SPECIFICATIONS. Measure distance (gap) between ends of gear spring. Replace gear spring if distance is not .712-.740 in. (18.0-18.8 mm).
scientia non olet · About LEMON Manuals