Hydraulic Adjusting Elements, Checking

WARNING: This page is about a different variant/trim than selected.

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
0.20 mm 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, REMOVING AND INSTALLING and for the right side refer to RIGHT CYLINDER HEAD COVER, REMOVING AND INSTALLING .

Vehicles through 05/2010:

Fig 1: Identifying Hose Clamp -Arrow- And Air Duct Hose

Courtesy of AUDI OF AMERICA, LLC

-- Loosen the hose clamp -arrow-, remove the air duct hose and move it to the side.

All Vehicles:

Fig 2: Guide Pin And Adapter T40058

Courtesy of AUDI OF AMERICA, LLC

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

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

-- Turn the crankshaft with the Crankshaft Socket T40058 in direction of engine rotation -arrow- until the cam on the balance element which is to be checked faces upward.

Fig 3: Identifying TDC With Special Tool Adapter T140058

Courtesy of AUDI OF AMERICA, LLC

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

Fig 4: Identifying Play Between Cams With Screwdriver -Arrow- And 0.20 mm Feeler Gauge

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 adjusting element. Refer to LEFT CYLINDER HEAD CAMSHAFT, REMOVING AND INSTALLING .

Final Procedures

NOTE:

The hose connections as well as the air guide pipes and hoses must be free of oil and grease before Installation.

Secure all hose connections with hose clamps of the same type as those equipped by the factory.

-- Install the air duct hose and screw-type clamps, refer to Fig 5.

Fig 5: Air Hose Clamp Identification

Courtesy of AUDI OF AMERICA, LLC

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