Valvetrain

Valvetrain

• The cylinder head and the cylinder head cover must be replaced together.

• After installing the camshafts, the engine may not be started for approximately 30 minutes. The hydraulic adjusting elements must seat themselves (otherwise the valves will seat themselves on the pistons).

• After working on the valvetrain and lifters, carefully rotate the crankshaft by hand at least 2 full revolutions before starting to be sure that valves do not strike the pistons.

• Always replace gaskets and seals.

Valvetrain, assembly overview => [ Valvetrain, Assembly Overview ] Service and Repair.

Camshaft, removing and installing => [ Camshafts, Removing and Installing ] Service and Repair.

Camshaft Axial Play, Checking => [ Camshafts, Checking Axial Clearance ] Testing and Inspection.

Replace valve stem seals => [ Valve Stem Seals, Removing and Installing ] Service and Repair.

Check valve guides => [ Valve Guides, Checking ] Testing and Inspection.