Changing the valve actuators

[Sansouci]

I may need to change the valve actuators to eliminate a persistent ticking sound. So when I pull the cam timing gear off the 1993 740il, how do I keep the chain taught so that it doesn't slip and screw up the timing?
--Ken

[SEOK]

It's been a while since ive done the head gasket on my girls 94 but I remember I did use a special cam tool, a block that holds the cams in place so you can remove the gears/ chain without them moving

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