Aerio L4-2.3L (2006)
Check camshaft journals and camshaft housings for pitting, scratches, wear or damage.
If any malcondition is found, replace camshaft or cylinder head with housing. Never replace cylinder head without replacing housings.
Check clearance by using gauging plastic. Checking procedure is as follows.
1) Clean housings and camshaft journals.
2) Make sure that all valve lash adjusters are removed and install camshaft to cylinder head.
3) Place a piece of gauging plastic to full width of journal of camshaft (parallel to camshaft).
4) Install camshaft housing.
5) Tighten camshaft housing bolts in such order as indicated in figure a little at a time till they are tightened to specified torque.
NOTE: Do not rotate camshaft while gauging plastic is installed.
Tightening torque
Camshaft housing bolts (a): 11 Nm (1.1 kgf-cm, 8.0 ft. lbs.)
