Hydraulic Adjusting Elements, Checking: Procedure

WARNING: This page is about a different car, the 2012 Audi S5, 2011 Audi S5, 2010 Audi S5, 2009 Audi S5, and 2008 Audi S5. However, it is still accessible from the selected car via links, so may be relevant.

-- 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 road test if necessary.

NOTE:

If Irregular Valve Noises Disappear But Return During Short Drives, Oil Check Valve Must Be Replaced. Oil Check Valve Location. Refer to OVERVIEW - OIL SPRAY JETS/VALVES .

-- 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 . Refer to RIGHT CYLINDER HEAD COVER, REMOVING AND INSTALLING .

-- Rotate the crankshaft until the lobes on the adjusting element to be checked face upward:

Vehicles With A Manual Transmission

-- Move the vehicle forward with 4th gear engaged and the ignition switched off.

Vehicles With Automatic Transmission

Fig 1: Identifying Notch -Arrow A- On T40257 Must Face Color Dash -Arrow B- On Vibration Damper

Courtesy of AUDI OF AMERICA, LLC

-- Position the :T40257 onto the :T40263 .

-- Attach the :T40257 to the bolts on the vibration damper.

The notch -arrow A- on the :T40257 must face the color dash -arrow B- on the vibration damper.

NOTE:

Ignore The Semi-Round Countersink On The :T40257 .

Continuation For All Vehicles

Fig 2: Checking Play Between Cam Lobes & Roller Rocker Lever

Courtesy of AUDI OF AMERICA, LLC

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

-- 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 . Refer to RIGHT CYLINDER HEAD COVER, REMOVING AND INSTALLING .