Hydraulic Adjusting Elements, Checking

WARNING: This page is about a different car, the 2016 Audi Q5, 2015 Audi Q5, and 2014 Audi Q5. 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

Crankshaft Turning Tool T40257
Wrench - 21mm T40263
Adapter T40314
Plastic wedge
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, refer to LEFT CYLINDER HEAD COVER, REMOVING AND INSTALLING for the left side and to RIGHT CYLINDER HEAD COVER, REMOVING AND INSTALLING for the right side.

-- Join the tools as illustrated.

Fig 1: Crankshaft Turning Tool, Wrench - 21mm And Adapter

Courtesy of AUDI OF AMERICA, LLC

Socket 21 mm for ¹ /₂ "-drive

Fig 2: Turning Crankshaft

Courtesy of AUDI OF AMERICA, LLC

CAUTION:

Components could be destroyed by the camshaft timing chains jumping off.

Turn crankshaft only in direction of engine rotation -arrow-.

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

Fig 3: Identifying Play Between Cams With Screwdriver -Arrow- And 0.20mm 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 CAMSHAFT, REMOVING AND INSTALLING .

Final Procedures

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