The head doesn't need to be removed to replaced the semi-circular cam plug, it can be replaced simply by removing the valve cover.

If you do end up determining that the alternator is failing, do yourself a favor and source your replacement from somewhere other than AutoZone, otherwise you'll likely find yourself becoming really good at replacing your alternator on a yearly basis.

Last edited by ryany; 01/24/13 10:40 PM.
95 Montero SR
3.8 MIVEC, Advance headers, 2 1/2" exhaust, Magnaflow muffler, OME shocks & rear springs, 2" body lift, 3" tank lift, 4.90s, TRE front locker, factory rear locker, Roger Brown Rock Sliderz, 315/75r16 (35") tires, Sport big brakes