3. Removevalve cover · k:::::; Unscrewthe valve cover screws (17 pieces)

911 Carrera (996) Engine, cylinder head, valve drive 3. Removevalve cover k:::::; Unscrewthe valve cover screws (17 pieces) and remove the valve cover. If the valve cover is stuck, loosen it by gently tapping with a '" plastic hammer. 251_99 ~ j 5. Relievethe timingchain. In order to relieve the timing chain,the chain tensioner and the guide rail between the cam- shaft sprockets must be removed. Remove both the hexagoncheadbolts of the chain ten- !76_99 sioner. Removethe chain tensioner cover and the chain tensioner. 4. Relievecamshaft. For any further work, it is sensibleto turn the engine in such a way that the camshafts do not press on the valves. With cylinder bank 1-3, the cams of the first cylinder should point outwardsand diagonally upwards. With cylinder bank 4-6, the cams of the fourth cylinder should point outwards and diagonally downwards. 267_99 1503 21 Removing camshaft housing -GT3 15 -145 Printed in Germany -32, 1999 99615141