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Home >> Audi >> 2014 >> S6 >> Repair and Diagnosis >> External Pages >> Different car >> Section 1662 (2.5L - Cylinder Head & VALVETRAIN - Engine Code(S): CBTA & CBUA (Convertible)) >> 15 Cylinder Head, VALVETRAIN >> Diagnosis And Testing >> Valve Timing, Checking >> Procedure

Valve Timing, Checking: Procedure

WARNING: This page is about a different car, the 2014 Volkswagen Beetle and 2013 Volkswagen Beetle. However, it is still accessible from the selected car via links, so may be relevant.

-- Follow repair instructions. Refer to GENERAL INFORMATION .

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

-- Lock the crankshaft in place for checking the valve timing. Refer to CRANKSHAFT, LOCKING TO CHECK/ADJUST VALVE TIMING .

Setting Valve Timing 

Valve timing is correct when bolts of Camshaft Clamp T40070 can be screwed in easily to the end into camshafts as depicted. Support surfaces of Camshaft Clamp T40070 must lie flat on flats of camshaft when doing this.

Fig 1: Identifying Camshaft Clamp T40070 Installed On To Camshafts
GWWM15-0185Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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

If bolts of Camshaft Clamp T40070 can now be screwed in easily with chain drive tensioned in this manner, valve timing is also correct. Possibly the crankshaft was not secured correctly.

Valve Timing Is Not Set 

Valve timing is not correct when bolts of Camshaft Clamp T40070 cannot be screwed in easily to the end into camshafts despite the tensioned chain drive.