Engine -Cylinder head, valve drive 911 Carrera (996) · 15. Fit auxiliary chain tensioner of special tool

Engine -Cylinder head, valve drive 911 Carrera (996) 15. Fit auxiliary chain tensioner of special tool 9599 on cylinder head 1 -3. Fit auxiliary chain tensioner without sealing ring and fasten on the cylinder head only hand-tight. Adjust pre-tensionforce with the hexagon-headbolt. The necessary pre-tensionforce has been achievedwhen the measuring pin is flush with the face surface of the pressure screw. 15.1 Slightlytighten hexagon-headbolt on the sprocket wheel to 10 Nm (7.5 ftlb. 633-97 18. Prepare cylinder head cover for installation: Clean sealing surface of the cylinder head and cylinder head cover very carefully. Apply a silicone bead to the cylinder head cover. Refer to: Sealing cover for camshaft housing (cylinder head cover), ServoNo. 1591 51. 449_97 16. Removeholding-downdevice, special tool 9611. 7. Holding-downdevice9624 remainson the cylinderheaduntilthe cylinderhead coveris fastened. 430_1_96 Carefullyplace the cylinder head cover in the correct position so that the sealing bead is not damaged. Screw two studs or centring pins into the corners of the cylinder head as centring aids. 15 -32 15 05 22 Installing camshafts 9961527 Printed in Germany -10, 1998