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Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go hereXJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.
This link was typed into my search bar well before I posted here and it provided me with no information on my OP. I know how to replace an alternator, I asked how to replace the bearing.
I use the same Delco housing, stator and diodes in my micro-hydro power wheel in my creek, but with a permanent magnet rotor. (thirty six years off grid here). I've changed a few bearings! It runs 24-7 from fall into spring-summer.
Last edited by DFlintstone; 02-25-2017 at 12:59 PM.
Year: 1998 Classic (I'll get it running soon....) and 02 Grand
Model: Cherokee (XJ)
Engine: 4.0
Originally Posted by DrewMogz
The reason I'm doing this is because my belt is occasionally squeaking and while I'm sure it's not the alternator causing all the noise, I'd like to be sure of it and just fix it now if it is.
If you are still thinking about rebuilding your alternator, I came across this web site when researching this topic: https://alternatorstarterrebuildkits.com/product/dpi Parts are about $32 plus s/h. Videos on how to go about rebuilding the alternator.
The previous owner of the last jeep I purchased gifted me with a box of used parts. One of which was the old alternator. I haven't decided to try the rebuild or just recycle the alternator.
MXDNJ - I don't think you have identified the correct alternator. I believe the one in question is a Delco. Those were used during the Renix era, not the ND, aka Denso.
Off topic,but I'd love to see pics and hear more about your stream generator Flintstone.
I PM'ed you Marty
Originally Posted by Charlie Foxtrot
MXDNJ - I don't think you have identified the correct alternator. I believe the one in question is a Delco. Those were used during the Renix era, not the ND, aka Denso.
Yea Charlie I'm all Renix. (Have used Nipen Denso for the Hydro though)The process is similar. Drew, a bad bearing should get hot. Very hot maybe. If you start it cold then drive for just a few minutes, maybe five minutes then find the bearing significantly hot it's bad. Also with the belt off you can just feel and rotate the Alt pulley. It should feel firm and butter smooth.
My idler pulley uses the same bearing as the Delco Btw.
Last edited by DFlintstone; 02-25-2017 at 12:57 PM.
In three or so courses at Santa Rosa Junior Collage, ending with a State test for a CA smog license, they had us do a B-load of carbs, starters and alternators. Great school! If it's Pre 83 I'm all over it! (Plenty didn't change all that much)
Last edited by DFlintstone; 02-25-2017 at 08:44 PM.
MXDNJ - I don't think you have identified the correct alternator. I believe the one in question is a Delco. Those were used during the Renix era, not the ND, aka Denso.
My apologies. I missed that the OP was looking to rebuild a Delco alternator.
CF took away our ability to put our year in our up-front info, resulting in a bunch of confusion with us clicking around in the dark. They can base there add fees on the number of clicks. SUGGESTING THAT NOW POSTERS PUT THEIR YEAR IN THEIR SIGNATURE, (and auto or manual trans)
I don't know myself if post Renix HO Jeeps use Delco Alts. I AM pretty sure right there in 91 is when the regulator went from the alt to the PCM, (computer), and that a bad bearing will get hot.
Thanks for all the info guys, I'm not even sure if it is a stock Delco or not since I haven't looked at it very closely. I was hoping to not have to rebuild the whole thing and just change the front bearing where it squeaks but since it seems like I'd have to take apart the whole system to do so and would there for should just rebuild the whole dang thing, it'd make sense to spend a couple extra bucks on a reman one with a lifetime warranty.
Well maybe hold on there. The squeaking might be because that small pulley, (to give high RPM), is slipping. Another alternator likely will not help. You can't feel for heat when all is hot. Cold, start and drive it five minutes, Then get your finger down in there and feel for heat. A bad bearing will heat up. Also the belt slipping in a pulley will heat that up. Rub your hands together! (makes heat also)
I had an issue Btw>>>>>
Soaping Belt
Tight, tighter, tightest the darn new belt would still chirp.
Finally in desperation I went out there with a bottle of Dawn dish soap and the garden hose. Idling, I got it wet, then squirt soap on both sides, rinsed some, and soaped a little more. Let it idle a minute all soapy. To end, I ran the hose slow on it running for a couple minutes. Bingo! That solved it. There was some sort of coating on the new belt? Idk. (repeat)
See if the sound changes when you turn on brights and the blower on high.
I normally run my belt as loose as I can, and still have the alternator not slip with the blower on high, and lights on brights. Puts less strain on all the other bearings. Radi pointed out a cool tip. After it might have been slipping, (voltage has been low), see if the Alt. pulley is hot. I want to go back and loosen it a tad now.
Last edited by DFlintstone; 02-26-2017 at 11:49 PM.
02-24-2017, 09:11 AM
(Plenty didn't change all that much)
