sisterpete Posted May 9, 2008 Share Posted May 9, 2008 I need to change the alternator on my 1991 LS400 tomorrow, but sure would like a tutorial on it before I jump in. I have looked high and low and cannot seem to find one anywhere. Can I get to it from the bottom of the car... etc.... Any help would be greatly appreciated. Thanks for all the help.... I have learned a great deal about my car from you guys here at the forum. Quote Link to comment Share on other sites More sharing options...
RFeldes Posted May 9, 2008 Share Posted May 9, 2008 Quite simple...disconnect the battery...Disconnect the alternator....Loosen the alternator and move it until the serpentine is loose all the while torqueing the pulley bearing, top left, it moves. Remember serpintine position..make a drawing. Unbolt the alternator and replace keeping the torque on the bearing. Tighten up the belt with the new alternator bolted in loosely and tightening all the while, letting loose of the torque bearing. replace wiring on the alternator and hook up the battery. Quote Link to comment Share on other sites More sharing options...
sisterpete Posted May 9, 2008 Author Share Posted May 9, 2008 thanks for the info... one question.... i'm not following the "torqueing the pulley bearing" do you mean the pulley that moves to keep the tension on the belt? Quote Link to comment Share on other sites More sharing options...
eatingupblacktop Posted May 9, 2008 Share Posted May 9, 2008 Try this link: http://www.lextreme.com/alternator.html Quote Link to comment Share on other sites More sharing options...
sisterpete Posted May 9, 2008 Author Share Posted May 9, 2008 THANK YOU SO MUCH!!!! just what i needed...... by the way.... cool name!! :D Quote Link to comment Share on other sites More sharing options...
mejojo Posted May 9, 2008 Share Posted May 9, 2008 THANK YOU SO MUCH!!!! just what i needed......by the way.... cool name!! :D Be aware you might find getting the alternator out and in can be tight, tricky, frustrating and time-consuming. Perhaps an experienced mechanic knows exactly the best way to turn it for it to come right out, but I did not find it easy. Joe Quote Link to comment Share on other sites More sharing options...
RFeldes Posted May 9, 2008 Share Posted May 9, 2008 Easiest way is from the bottom, I did manage to get mine out the top and I recall it was tight. Quote Link to comment Share on other sites More sharing options...
sisterpete Posted May 10, 2008 Author Share Posted May 10, 2008 cant imagine gettng that thing out the top.... at least on mine i would have had to remove several things... did get it out the bottom though... took it to a local alt / starter repair place and the brushes were gone.. he replaced them for 30 bucks and everything is back charging well. thanks for all the help........... Quote Link to comment Share on other sites More sharing options...
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