Hydraulic Adjusting Elements, Checking

WARNING: This page is about a different car, the 2012 Audi Q5, 2011 Audi Q5, 2010 Audi Q5, and 2009 Audi Q5. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The hydraulic adjusting elements cannot be repaired.

Irregular valve noises are normal while starting the engine.

Special tools and workshop equipment required

Crankshaft Socket T40058
Feeler Gauge

Procedure

-- Start the engine and let it run until the coolant fan switches on once.

-- Increase engine speed for about 2 minutes to approximately 2500 RPM, perform a road test if necessary.

-- If the hydraulic adjusting elements are still loud, determine which one is faulty as follows:

-- Remove the cylinder head cover, refer to LEFT CYLINDER HEAD COVER, REMOVING AND INSTALLING and RIGHT CYLINDER HEAD COVER, REMOVING AND INSTALLING .

-- Rotate the crankshaft until cam lobes on the adjusting element that will be checked face upward. To do this, move the vehicle forward with the 4th gear engaged and the ignition switched off.

-- To determine the play between cam lobes and roller rocker lever, press lever down -arrow-.

Fig 1: Checking Play Between Cam Lobes & Roller Rocker Lever

Courtesy of AUDI OF AMERICA, LLC

-- If a 0.20 mm feeler gauge can slide between the cam lobes and roller rocker lever, replace the hydraulic adjusting element, refer to CAMSHAFT, REMOVING AND INSTALLING .

Final Procedures

-- Install the cylinder head cover, refer to LEFT CYLINDER HEAD COVER, REMOVING AND INSTALLING and RIGHT CYLINDER HEAD COVER, REMOVING AND INSTALLING .