Alternator

[1985xjlaredo]

OK so I got my new (lol) 1988 Xj And I think I need an alternator for it. Looks like it is impossible to change.
Should I go from the top or the bottom? I have read the stories about bigger ones not fitting.
Does anyone know what the stock case dimensions are? I have searched and havent seen a good how to on this yet.
Thx for the help.NAXJA

[andyr354]

Just did mine from the bottom last weekend. Was a simple 1/2 hour job with a new belt as well.

I don't have a stock front crossmember anymore though so it might have made more room to work. Pull the electric fan and it makes getting to the tensioner much easier.

[5-90]

Concur.

Also, pull the airbox - which allows you a straighter shot to the adjuster screw. Be careful you don't crack the "knuckle" that rides on it - it's sintered metal... I'm working on a replacement - I need to prototype a couple of materials.

If you go to the hardware store, might I suggest you get a couple of extruded "U" nuts (the clip type) in 1/4"-20, and a couple of thumbscrews? That will make it LOADS easier to pull the E-fan, since you suddenly won't need tools anymore...

The alternator drops out the bottom past the antiroll bar - it takes a little finagling, but it's doable. Probably takes me all of a half-hour to change the alternator and belt on one of my RENIX rigs, so you shouldn't have any trouble.

5-90

[andyr354]

I don't have a swaybar either. Guess mine was really easy :lol:

[langer1]

As for bigger better look at 5-90's website under powering your rig.

[swbooking]

yeah i did mine from the bottom on my 90 a while back it was pretty easy to do, like 30 or 45 min. and i have a 100 amp alternator from Napa it fit fine.

[1985xjlaredo]

Cool thx for the info that all i really needed to know