From local parts store, I was sold an AC Delco reman alternator for a 85 cj7 6cyl 258. The part number is 334-2112 and is 63 amps. I researched part number and found that it is for a 80-82 cj. Part number 334-2114 is for the 85 cj7. It is also 63 amps. The 334-2112 Alternator I was sold is not putting out proper voltage. I checked all wires and cables. Could this wrong part be the problem.

Lefty if everything bolted up and plugged up It should be the same.. What voltage are you getting?
Big JIm <img src="/forums/images/graemlins/pfft.gif" alt="" />

Voltage is about 12.3

12.3 is battery voltage... The alt ain't charging!! Take it back!
Big JIm <img src="/forums/images/graemlins/pfft.gif" alt="" />

I bought alternator at Parts Connection which deals mostly in AC Delco rebuilt or reman crap. I had it tested at Autozone today and it failed. Where can I buy quality parts for my jeep?

Why not go back to the zone and pick one up? I deal mostly with O'Riley's but I think all of them are bout the same.
Big Jim <img src="/forums/images/graemlins/pfft.gif" alt="" />

I bought a new brush kit for my origanal,....under $20 if i remeber correctly. Easy fix. If the bearings are out they are standard sizes like a 6205z.

I had a bad experience with Auto Zone about 12 years ago. Called up and asked for a part for an 86 Isuzu Pup. The guy put me on hold then came back and asked what year chevy I had. I told him Isuzu. Quoted me a price. I went over to pick up the parts, got home and guess what? They wouldn't fit. Took it back and did a part number search, came back to a ??? you guessed it Chevy PU. Been goin to O'riley's ever since.

Hey Lefty, most parts stores like AutoZone, Oreilly' s Advanced buy tons of rebuilt stuff that has pretty low quality control. It isnt uncommon to go thru several "new" ones til you get a good one. I bought a 100 amp alternator off ebay from a seller called "alterstart" They are in the biz of rebuilding high output alternators and starters. Altho I cant attest to the longevity of thier product, I can tell you it has kept my battery at peak thru some heavy "start-no fire" sessions with my project. You cant beat the price, $90 plus shipping for 100 amps. This guy does higher amp stuff too but they get pretty pricey. I bought the higher amp than stock to run my winch, lighting etc on my rig. Heres a link to the 100 amp one but check out the others he does too. Hope this helps ya! <img src="/forums/images/graemlins/notooth.gif" alt="" /> AlterStart