Hydraulic Adjusting Elements, Checking

WARNING: This page is about a different car, the 2012 Audi S5, 2011 Audi S5, and 2010 Audi S5. 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

Socket T40058 for vehicles with a S-Tronic transmission 0B5
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. For the left side, refer to LEFT CYLINDER HEAD COVER and for the right side, refer to RIGHT CYLINDER HEAD COVER .

-- 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: Identifying Noise Insulation

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-- Remove the front noise insulation -1-. Refer to OVERVIEW - NOISE INSULATION .

-- Insert the T40058 guide pins as follows:

Fig 2: Identifying Guide Pin And Adapter T40058

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

-- Rotate the crankshaft 180° further in direction of engine rotation -arrow- using the T40058 and wrench.

Fig 3: Using Socket T40058 To Counter Hold Crankshaft

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All Vehicles

Fig 4: Checking Play Between Cam Lobes And Roller Rocker Lever

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-- 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 CAMSHAFTS .

Final Procedures

-- Install the front noise insulation. Refer to OVERVIEW - NOISE INSULATION .

-- Install the cylinder head cover. For the left side, refer to LEFT CYLINDER HEAD COVER and for the right side, refer to RIGHT CYLINDER HEAD COVER .