Alternator installation - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-01-2005, 04:28 PM   #1
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Default Alternator installation

Greetings!

My '93 SEs alternator went south on me. Battery still is good, so I went out and got a replacement AC Delco alternator. Looking at it, it seems it should be an easy install [two bolts and Bob'* your Uncle!]...My question is: what is the best way to loosen/relieve the belt tension, and is there anything I should remember to do [other than disconnecting the battery]?....

Thanx,
Andy
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Old 07-01-2005, 04:31 PM   #2
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Take the appropriate socket (i wanna say 18 or 19mm) and put it on the belt tensioner, pull and it'll loosen tension enough for you to get the belt of...

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Old 07-01-2005, 05:43 PM   #3
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Clean that ring terminal on the back and use dielectric grease when installing.
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Old 07-01-2005, 06:00 PM   #4
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It'* easy, and should take less than 15 minutes. The bolts you'll need to loosen/tighten are metric. I think it'* a 15mm socket for the bolt on the belt tensioner, but I don't remember for sure. Rotate that bolt clockwise and keep pressure applied (it'* spring-loaded) and remove the belt while the tension is removed, then let go of the socket wrench slowly to allow the spring to return the bolt to its at-rest position. The 2 bolts on the alternator are easy, and I use a crescent wrench or second socket to hold the nut while I loosen/tighten the rear bolt.
After the alternator has been replaced and the bolts have been reinstalled, release the tension on the tensioner pulley again and put the belt back on.
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Old 07-01-2005, 09:05 PM   #5
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Be careful not to let it drop after the two main bolts are out and before you disconnect the one in the back. There is an engine coolant elbow that is directly beneath it and it is made out of plastic. Dropping your alternator on it and not realizing it will result in you being bitched at by my wife when we overheat on the way to the DR.

Really, just watch out for that elbow.

Bill
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Old 07-01-2005, 09:24 PM   #6
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That'* pretty bad when his wife is going to give you a hard time...what'* DR?
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Old 07-01-2005, 09:31 PM   #7
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Believe me she was pissed!

it'* *the* DR. and that means the Doctor. Day after changing the Alt, i overheated takinhg her to the Dr. She was pissed and I was perplexed for about 5 minutes until I saw where it was coming from. Replaced that crappy plastic piece of crap with a nice metal one.
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Old 07-01-2005, 09:33 PM   #8
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Quote:
Originally Posted by Xaa
Believe me she was pissed!

it'* *the* DR. and that means the Doctor. Day after changing the Alt, i overheated takinhg her to the Dr. She was pissed and I was perplexed for about 5 minutes until I saw where it was coming from. Replaced that crappy plastic piece of crap with a nice metal one.
I picked up the car at 7pm Monday night. Tuesday at 5pm heading home from work mine blew.... 80mph...lol
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