NOTE: Do not rotate the camshaft during inspection.

1. Remove the intake camshaft gear and exhaust camshaft gear.

1. Remove four bolts securing the lower camshaft holder, then remove the lower camshaft holder and rocker arm/hydraulic tappet assemblies.

1. Put the lower camshaft holder, camshafts, and upper camshaft holders on the cylinder head, then tighten the bolts in sequence to the specified torque.
   Specified Torque

   8 mm Bolts: | 22 N·m (2.2 kgf·m, 16 lbf·ft)
   6 mm Bolts: | 12 N·m (1.2 kgf·m, 8.7 lbf·ft)
   6 mm Bolts: (21), (22), (23)

1. Seat the camshaft by pushing it away from the camshaft gear end of the cylinder head.