Hydraulic Adjusting Elements, Checking: Procedure

WARNING: This page is about a different car, the 2015 Audi RS 5, 2014 Audi RS 5, and 2013 Audi RS 5. 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 CYLINDER HEAD COVER, REMOVING AND INSTALLING .

-- Position The Crankshaft Turning Tool:T40257 Onto The Wrench - 21 mm:T40263 .

Fig 1: Attaching T140257 To T140263

Courtesy of AUDI OF AMERICA, LLC

-- Attach The Crankshaft Turning Tool:T40257 To The Bolts On The Vibration Damper.

The Semi-Round Countersink -Arrow A- On The Crankshaft Turning Tool:T40257 Must Face The Semi-Round Countersink -Arrow B- On The Vibration Damper.

NOTE:

Ignore The Notch On The Crankshaft Turning Tool:T40257 .

-- Turn The Crankshaft In Direction Of Engine Rotation -Arrow- Until The Cam On The Balancing Element Being Checked Is At The Top.

-- To Determine The Play Between Cam Lobes And Roller Rocker Lever, Press Lever Down -arrow-.

Fig 2: 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 CYLINDER HEAD COVER, REMOVING AND INSTALLING .