Hydraulic Adjusting Elements, Checking

Special tools and workshop equipment required 

• Feeler Gauge
• Crankshaft Socket T40058 for vehicles with a S tronic transmission 0B5

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: left refer to LEFT CYLINDER HEAD COVER, REMOVING AND INSTALLING , right refer to RIGHT CYLINDER HEAD COVER, REMOVING AND INSTALLING .

-- Rotate the crankshaft until the lobes on the hydraulic 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 S tronic Transmission 0B5 

Fig 1: Noise Insulation Panels

Courtesy of AUDI OF AMERICA, LLC

-- Remove the front noise insulation -1-. Refer to NOISE INSULATION, REMOVING AND INSTALLING .

-- Insert the Crankshaft Socket T40058 guide pins as follows:

Fig 2: Guide Pin And Adapter T40058

Courtesy of AUDI OF AMERICA, LLC

• The large diameter -arrow 1- faces the engine.
• The small diameter -arrow 2- faces the adapter.

-- Rotate the crankshaft in direction of engine rotation -arrow- using the Crankshaft Socket T40058 and offset open-end wrench.

Fig 3: Counter Hold Crankshaft Using Socket T40058

Courtesy of AUDI OF AMERICA, LLC

Continuation for All Vehicles 

Fig 4: 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 -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 front noise insulation. Refer to NOISE INSULATION, REMOVING AND INSTALLING .

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