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Alternator Bearing
My alternator is squealing like a banshee but charges fine. I presume
the bearing is about to go FUBAR. It is a NipponDenso 90 amp original on a 94 YJ 2.5L. Does anyone know of a replacement strategy for the bearing as neither the Chilton nor Haynes manuals show a breakdown for bearing replacement. Ooh, I guess a part number for the bearing would be an added bonus too! As always, all help is appreciated! Marty |
Re: Alternator Bearing
I would first verify that the belt is the right tension and not polished
up from road dust or mud. I test mine by having a cold off engine and trying to see if I can spin the alternator pulley by hand. If I can make it hand slip, the belt has issues. The alternator takes several HP to spin up under load and if the pulley can hand slip, it will never grab right. I used to go through 3 belts a year when playing in the mud. Freaking liquid sandpaper. If you check your local auto parts store, you might be able to find a rebuild kit for it. I have one for my Delco and it has a bearing, brushes, springs and regulator/diode packs. I believe it was in the low twenty dollar range. The bearing is a press fit, the biggest bitch is getting the pulley off. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) Marty wrote: > > My alternator is squealing like a banshee but charges fine. I presume > the bearing is about to go FUBAR. It is a NipponDenso 90 amp original > on a 94 YJ 2.5L. Does anyone know of a replacement strategy for the > bearing as neither the Chilton nor Haynes manuals show a breakdown for > bearing replacement. Ooh, I guess a part number for the bearing would > be an added bonus too! As always, all help is appreciated! > Marty |
Re: Alternator Bearing
I would first verify that the belt is the right tension and not polished
up from road dust or mud. I test mine by having a cold off engine and trying to see if I can spin the alternator pulley by hand. If I can make it hand slip, the belt has issues. The alternator takes several HP to spin up under load and if the pulley can hand slip, it will never grab right. I used to go through 3 belts a year when playing in the mud. Freaking liquid sandpaper. If you check your local auto parts store, you might be able to find a rebuild kit for it. I have one for my Delco and it has a bearing, brushes, springs and regulator/diode packs. I believe it was in the low twenty dollar range. The bearing is a press fit, the biggest bitch is getting the pulley off. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) Marty wrote: > > My alternator is squealing like a banshee but charges fine. I presume > the bearing is about to go FUBAR. It is a NipponDenso 90 amp original > on a 94 YJ 2.5L. Does anyone know of a replacement strategy for the > bearing as neither the Chilton nor Haynes manuals show a breakdown for > bearing replacement. Ooh, I guess a part number for the bearing would > be an added bonus too! As always, all help is appreciated! > Marty |
Re: Alternator Bearing
I would first verify that the belt is the right tension and not polished
up from road dust or mud. I test mine by having a cold off engine and trying to see if I can spin the alternator pulley by hand. If I can make it hand slip, the belt has issues. The alternator takes several HP to spin up under load and if the pulley can hand slip, it will never grab right. I used to go through 3 belts a year when playing in the mud. Freaking liquid sandpaper. If you check your local auto parts store, you might be able to find a rebuild kit for it. I have one for my Delco and it has a bearing, brushes, springs and regulator/diode packs. I believe it was in the low twenty dollar range. The bearing is a press fit, the biggest bitch is getting the pulley off. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) Marty wrote: > > My alternator is squealing like a banshee but charges fine. I presume > the bearing is about to go FUBAR. It is a NipponDenso 90 amp original > on a 94 YJ 2.5L. Does anyone know of a replacement strategy for the > bearing as neither the Chilton nor Haynes manuals show a breakdown for > bearing replacement. Ooh, I guess a part number for the bearing would > be an added bonus too! As always, all help is appreciated! > Marty |
Re: Alternator Bearing
People used to rebuild these all the time, but it has gone out of fashion.
The last time I went into Autozone and asked for a set of bearings and a brush kit, the kid behind the counter acted like I was walking on water. I recommend replacing at least both bearings and the brushes at the same time. Earle "Mike Romain" <romainm@sympatico.ca> wrote in message news:457449EC.E3E3D710@sympatico.ca... > I would first verify that the belt is the right tension and not polished > up from road dust or mud. > > I test mine by having a cold off engine and trying to see if I can spin > the alternator pulley by hand. If I can make it hand slip, the belt has > issues. The alternator takes several HP to spin up under load and if > the pulley can hand slip, it will never grab right. > > I used to go through 3 belts a year when playing in the mud. Freaking > liquid sandpaper. > > If you check your local auto parts store, you might be able to find a > rebuild kit for it. I have one for my Delco and it has a bearing, > brushes, springs and regulator/diode packs. I believe it was in the low > twenty dollar range. > > The bearing is a press fit, the biggest bitch is getting the pulley off. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's > Canadian Off Road Trips Photos: Non members can still view! > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 > (More Off Road album links at bottom of the view page) > > Marty wrote: > > > > My alternator is squealing like a banshee but charges fine. I presume > > the bearing is about to go FUBAR. It is a NipponDenso 90 amp original > > on a 94 YJ 2.5L. Does anyone know of a replacement strategy for the > > bearing as neither the Chilton nor Haynes manuals show a breakdown for > > bearing replacement. Ooh, I guess a part number for the bearing would > > be an added bonus too! As always, all help is appreciated! > > Marty |
Re: Alternator Bearing
People used to rebuild these all the time, but it has gone out of fashion.
The last time I went into Autozone and asked for a set of bearings and a brush kit, the kid behind the counter acted like I was walking on water. I recommend replacing at least both bearings and the brushes at the same time. Earle "Mike Romain" <romainm@sympatico.ca> wrote in message news:457449EC.E3E3D710@sympatico.ca... > I would first verify that the belt is the right tension and not polished > up from road dust or mud. > > I test mine by having a cold off engine and trying to see if I can spin > the alternator pulley by hand. If I can make it hand slip, the belt has > issues. The alternator takes several HP to spin up under load and if > the pulley can hand slip, it will never grab right. > > I used to go through 3 belts a year when playing in the mud. Freaking > liquid sandpaper. > > If you check your local auto parts store, you might be able to find a > rebuild kit for it. I have one for my Delco and it has a bearing, > brushes, springs and regulator/diode packs. I believe it was in the low > twenty dollar range. > > The bearing is a press fit, the biggest bitch is getting the pulley off. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's > Canadian Off Road Trips Photos: Non members can still view! > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 > (More Off Road album links at bottom of the view page) > > Marty wrote: > > > > My alternator is squealing like a banshee but charges fine. I presume > > the bearing is about to go FUBAR. It is a NipponDenso 90 amp original > > on a 94 YJ 2.5L. Does anyone know of a replacement strategy for the > > bearing as neither the Chilton nor Haynes manuals show a breakdown for > > bearing replacement. Ooh, I guess a part number for the bearing would > > be an added bonus too! As always, all help is appreciated! > > Marty |
Re: Alternator Bearing
People used to rebuild these all the time, but it has gone out of fashion.
The last time I went into Autozone and asked for a set of bearings and a brush kit, the kid behind the counter acted like I was walking on water. I recommend replacing at least both bearings and the brushes at the same time. Earle "Mike Romain" <romainm@sympatico.ca> wrote in message news:457449EC.E3E3D710@sympatico.ca... > I would first verify that the belt is the right tension and not polished > up from road dust or mud. > > I test mine by having a cold off engine and trying to see if I can spin > the alternator pulley by hand. If I can make it hand slip, the belt has > issues. The alternator takes several HP to spin up under load and if > the pulley can hand slip, it will never grab right. > > I used to go through 3 belts a year when playing in the mud. Freaking > liquid sandpaper. > > If you check your local auto parts store, you might be able to find a > rebuild kit for it. I have one for my Delco and it has a bearing, > brushes, springs and regulator/diode packs. I believe it was in the low > twenty dollar range. > > The bearing is a press fit, the biggest bitch is getting the pulley off. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's > Canadian Off Road Trips Photos: Non members can still view! > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 > (More Off Road album links at bottom of the view page) > > Marty wrote: > > > > My alternator is squealing like a banshee but charges fine. I presume > > the bearing is about to go FUBAR. It is a NipponDenso 90 amp original > > on a 94 YJ 2.5L. Does anyone know of a replacement strategy for the > > bearing as neither the Chilton nor Haynes manuals show a breakdown for > > bearing replacement. Ooh, I guess a part number for the bearing would > > be an added bonus too! As always, all help is appreciated! > > Marty |
Re: Alternator Bearing
Earle Horton wrote:
> People used to rebuild these all the time, but it has gone out of fashion. > The last time I went into Autozone and asked for a set of bearings and a > brush kit, the kid behind the counter acted like I was walking on water. I > recommend replacing at least both bearings and the brushes at the same time. > > Earle Brushes in an alternator??? I used to rebuild generators with brushes. :-) -- FRH |
Re: Alternator Bearing
Earle Horton wrote:
> People used to rebuild these all the time, but it has gone out of fashion. > The last time I went into Autozone and asked for a set of bearings and a > brush kit, the kid behind the counter acted like I was walking on water. I > recommend replacing at least both bearings and the brushes at the same time. > > Earle Brushes in an alternator??? I used to rebuild generators with brushes. :-) -- FRH |
Re: Alternator Bearing
Earle Horton wrote:
> People used to rebuild these all the time, but it has gone out of fashion. > The last time I went into Autozone and asked for a set of bearings and a > brush kit, the kid behind the counter acted like I was walking on water. I > recommend replacing at least both bearings and the brushes at the same time. > > Earle Brushes in an alternator??? I used to rebuild generators with brushes. :-) -- FRH |
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