The last engine i shimmed up was an old Jag straight six so I'm a bit out of touch with the newer engines but what i can tell you is if the process is still basically the same you will need a fairly good knowledge about mechanics.
For starters you will need a micrometer and know how to read one correctly as it's not as simple as remove old shims and fit new set as the clearance on each individual rocker will vary plus if you get your calculations wrong you won't know until the whole thing is re-built and checked the gaps so if it's wrong you have to start all over again.
As i said I'm out of touch with the procedure and it may well be a lot easier these days but i doubt it if I'm wrong another member will put me straight and in turn point you in the right direction:thumbsup
Does hydraulic mean that they adjust themselves? Is this what is called the lifter? The opening and closing of the valves relative to the cam shaft is hydraulically adjusted?
I stand corrected about having to replace the shims then. I could have sworn I read that somewhere.
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