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Home >> Audi >> 2025 >> S4 Premium >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Cylinder Head, VALVETRAIN (Servicing - 6-Cylinder 2.9L; 3.0L 4V TFSI Ea839 Engine) >> 15 Cylinder Head, VALVETRAIN >> VALVETRAIN >> Camshaft, Measuring Radial Clearance >> Procedure

Camshaft, Measuring Radial Clearance: Procedure

-- Remove the camshafts. Refer to CAMSHAFT, REMOVING AND INSTALLING .

-- Mark the allocation of the roller rocker lever for installation later.

-- Remove the roller rocker lever and place it on a clean surface.

-- Clean the bearing and the bearing journals.

-- Place the Plastigage over entire width of bearing journal or into the bearing.

-- Reinsert the camshafts, mount the camshaft housing and tighten with an additional turn Refer to Figure, do not turn the camshafts while doing this.

-- Remove the camshaft housing and the camshafts again.

-- Compare the width of the Plastigage with the measuring scale.

Radial clearance:

-- Replace the bolts for the final assembly.