Valve Timing, Checking

Special tools and workshop equipment required 

• Camshaft Clamp T40070

Procedure 

-- Remove the cylinder head cover. Refer to CYLINDER HEAD COVER .

-- Lock the crankshaft for checking the valve timing. Refer to TO CHECK/ADJUST VALVE TIMING .

Valve Timing is Correct:

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

Fig 1: Identifying Camshaft Clamp T40070 Installed On To Camshafts

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- If the bolts could not be installed easily, attempt to rotate the exhaust camshaft at the recess using an open end wrench -A- (18 or 19 mm, depending on wrench width) slightly in the -direction of the arrow- in order to eliminate any play in the chain.

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

Valve Timing is Not Correct:

The valve timing is not correct when the bolts for the camshaft clamp T40070 cannot be easily installed into the ends of the camshafts despite the tensioned chain.

• In this case, the valve timing must be adjusted. Refer to VALVE TIMING, ADJUSTING .

Assembly 

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

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