Q7 Quattro V8-4.2L (BAR) (2008)
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Screw (3242) into hole to 20 Nm, if necessary rotate crankshaft very slightly back and forth to completely center the holder.
The rest of the installation is in reverse order of removal, note the following:
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Position camshaft timing chains on camshafts => [ Installing ] See: Timing Components/Timing Chain/Service and Repair/Camshaft Timing
Chains, Removing From Camshafts.
CAUTION!
Risk of damaging valves and piston heads after working on valvetrain.
‹› The motor must not be started for about 30 minutes after installing camshafts because the hydraulic equalization elements must seat
themselves.
‹› To ensure valves do not strike pistons when starting, carefully rotate engine at least 2 full revolutions.