The only marks you need to be concerned with are on the rear of the cam
gears, there are two large dimples, these are the assembly marks, not
the timing marks, line them up and then rotate the camshafts to the top
dead center position, there should be two small dots that line up with
the single dot in between.
The reason for the assembly marks is that
the one of the cams has a spring loaded gear, you can identify it
because it has a two piece gear, before you remove the cam you have to
install a short bolt into one of the holes in the gear so that it won't
unwind, the reason you need to use the assembly marks is that the
service bolt is not accessible with the cams at top dead center so you
assemble it with the marks so that you can then remove the bolt and then
rotate the cams to the #1 firing position.
Read more:
http://wiki.answers.com/Q/Camshaft_timing_mark_96_Camry_2.2l#ixzz1jE0qBgxz
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