Engine -Cylinder head, valve drive 911 Carrera (996) · 266_98

Engine -Cylinder head, valve drive 911 Carrera (996) r 266_98 271_98 9. Removetie wrap and fit sprocket wheel with 12. Unscrewthe chain tensioner (fitted to the chain on the flange of the exhaustcamshaft. crankcase half of cylinder bank 4 -6), attach auxiliarychain tensioner (special tool 9599) 10. Position drive plate or driver star of the oil and adjust pre-tensionforce (see Item 12). extraction pump on the sprocket wheel. Fit hexagon-headbolt M6 x 15 (10.9). Tighten hexagon-headbolt by hand only. -- If11. Fit auxiliary chain tensioner of special tool 9599 on cylinder head 1 -3. Fit auxiliary -~ chain tensioner without sealing ring and fasten on the crankcase only hand-tight. ~~ The mechanicalauxiliary chain tensioners must be installed with the correct pre-tension - when the valve timing is adjusted or ~::~~..d- checked. The necessary pre-tensionforce has been achievedwhen the measuringpin lrl is flush with the face surface of the pressure screw. Turn the screw if necessary. 468_97 15 -102 15 59 24 Installing valve tappets of cylinder bank 1- 3 99615101 Printed in Germany -10, 1998