No. Designation Qty. Removal Installation · 9 Tensioning element 1 Relieve

911 Carrera (996) Engine -Cylinder head, valve drive Note: No. Designation Qty. Removal Installation 9 Tensioning element 1 Relievetensioning element Removetensioning screw (VarioCam)for camshafts with specialtool, tensioning 9632 or 9632/1 only screw 9632 (with right- after the camshafts or hand thread) or 9632/1 tensioning elementhas (with left-handthread), been fastened on the before removal of the cylinder head camshafts 10 Timing chain 1 See Assemblyinstructions 11 Exhaustcamshaft 1 Check for wear (scoring), observe identification 12 Inlet camshaft 1 Check for wear (scoring), observe identification 13 Valve tappet 12 Do not interchange;store Check for wear (scoring) in suitable place 14 Pan-headscrewwith 15 captivewasherM6 x 35 15 Guide for valve tappets 1 Tighteningsequence: tighten from the inside to the outside. Check for wear (scoring) 16 Hexagon-headbolt M6 x 16 17 Shield (fitted only on 1 Fit before installing guide cylinder head 1 -3) for valve tappets 18 Pan-headscrew with 1 Fit before installingthe captive washer M6 x 35 shield 19 Pan-headscrew with 3 captive washer M6 x 35 15 7037 Disassembling and assembling cylinder head Camshaft drive 15-17 Printed in Germany -28, 1999 9961515 1