Cylinder Head Assembly: Adjustments

Valve Timing, Checking

Special tools, testers and auxiliary items required

• Camshaft Clamp (T40070)

Note the following whenever working inside the engine compartment due to limited space:

• Route all lines and wires in their original locations.

• Ensure sufficient clearance to all moving or hot components.

- Remove the cylinder head cover. Refer to => [ Cylinder Head Cover ] Cylinder Head Cover.

- Lock the crankshaft in place for checking the valve timing. Refer to => [ to Check/Adjust Valve Timing ] Procedures.

Setting the valve timing:

Valve timing is correct when the bolts for the camshaft clamp (T40070) can be easily installed to the ends of the camshafts as shown. The support surfaces of the camshaft clamp (T40070) must lie flat on the flats of the camshafts when doing this.






- If the bolts are difficult to install, install an 18 or 19 mm open end wrench - A - on a recess in the exhaust camshaft and rotate the camshaft slightly in the - direction of the arrow - to remove any play in the chain.

If the bolts for the camshaft clamp (T40070) can now be installed easily with chain tensioned in this manner, the valve timing is also correct. Possibly the crankshaft was not secured correctly.

Valve timing is not set:

Valve timing is not correct when the bolts for the camshaft clamp (T40070) cannot be easily installed to the ends of the camshafts despite the tensioned chain.

• In this case, the valve timing must be adjusted. Refer to => [ Valve Timing, Adjusting ] Adjustments.

Assembly

Assembly is performed in the reverse order of removal. When doing this note the following:

• Remove the locking pin (T40069) from the cylinder block and install the plug (30 Nm).