20-30 min, i can take out and replace the Alt in my 87 XJ
1/2in, 13mm, 15mm (i think, for Alt bolts), 6" extension, ratchet, Shiner Bock.
*Remove battery tiedown, and battery.
*Remove Airbox. (sip beer)
*Loosen a few bolts on the power steering box.
*Loosen the tension bolt on the side of the above box, its the 13mm. (sip beer)
*belt comes loose.
*Remove two bolts holding on Alternator (they also ground it).
*Replace Alt, do opposite install
replace beer. beat chest. stare at completed work. sip beer.