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How to Replace Alternator 85-86 Chevy Camaro

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  1. step : Disconnecting the Battery (0:54)
    • Disconnect the negative battery cable with an 8mm wrench
  2. step : Removing the Alternator (1:12)
    • Disconnect the alternator wiring harnesses
    • Pull back the battery lead boot
    • Remove the 10mm nut behind the battery lead boot
    • Pull off the battery lead
    • Loosen the 15mm bolt from the front of the alternator
    • Loosen the 14mm bolt on the front of the alternator
    • Pull the alternator toward the center of the vehicle
    • Pull the serpentine belt off the alternator pulley
    • Remove the 15mm bolt
    • Remove the 14mm bolt
  3. step : Preparing the New Alternator (2:59)
    • Remove the bolt that holds the bracket to the old alternator
    • Transfer the bracket to the new alternator
    • Insert the 15mm bolt into the new alternator
  4. step : Installing the New Alternator (3:15)
    • Push the alternator into place
    • Start the 14mm bolt by hand
    • Start the 15mm bolt by hand
    • Push the alternator toward the center of the vehicle
    • Pull the serpentine belt on to the alternator pulley
    • Use a pry bar to hold the alternator in place
    • Tighten the 14mm bolt
    • Tighten the 15mm bolt
    • Tighten the 15mm bolt into the bracket
    • Connect the alternator wiring harness
    • Connect the battery lead to the alternator
    • Fasten the 10mm bolt on to the alternator
    • Put on the battery lead boot
  5. step : Reconnecting the Battery (6:52)
    • Reconnect the negative battery cable
  6. step : Checking the Serpentine Belt (6:04)
    • Start the vehicle
    • Run the engine briefly
    • Check the tension of ther serpentine belt
    • If the belt is loose, tighten the alternator bolts

Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.

Hi, I'm Mike Green. I'm one of the owners of 1A Auto. I want to help you save time and money repairing or maintaining your vehicle. I'm going to use my 20-plus years experience restoring and repairing cars and trucks like this to show you the correct way to install parts from 1AAuto.com. The right parts installed correctly: that's going to save you time and money. Thank you and enjoy the video.

In this video we're going to show you how to replace the alternator on this 1986 Camaro IROC-Z; it's the same for any '82 to '92 Camaro or Firebird. The tools you'll need are 8, 10, 14, and 15mm . and you can either use wrenches or you can use sockets with a ratchet.

Disconnect your negative battery cable. This vehicle should have the side post that uses an 8mm wrench or socket ratchet; somebody's replaced the battery cables. The alternator in our vehicle is actually working fine; we're just going to show you how to remove it and put it back in. Next, you want to disconnect the leads there, and then back here, and pull this boot back. There's a 10mm nut, and remove that. We'll speed it up here, as we just use a 10mm wrench to remove that nut and remove that battery lead from the back of the alternator. Now, use a 15mm socket with a ratchet. Work on this bolt some. Okay, then this bolt down here is a 14mm. Soon as I loosen that up, the alternator goes in. We can remove the belt. We'll fast forward here a little more, as I remove that upper bolt the rest of the way, and then remove that lower bolt. Now, the alternator comes out and up.

In the back of the alternator is a bracket. You probably saw it swinging. The bolt was not even -- I mean, it's not even finger tight. You want to swap that over to your new alternator, if you're putting one in, and then tighten that bolt up after you install the alternator.

First, let's move our harnesses out of the way here, take our alternator, put the top into place, and then let this bracket kind of slide in first, slide it down into place. Bolt through and get it started. Put that in place. I'll just shake that a little bit. It lets that larger bolt down there get started. Now, we try to put the belt on; just force the alternator in toward the engine a little more, give yourself a little more slack to allow that belt to go up and over the pulley. Use a small pry bar or a big screwdriver, then pull, pry up. Just a quick note while I'm tightening up that bottom one: that's good to start your vehicle up, shut it off, check the tension of the belt and re-tighten it if necessary. Okay, now you need 15mm wrench and back behind, tighten up our brace, and this lead, and the battery lead ground. I'm going to speed it up here as I put that battery lead on, and tighten up that 10mm nut that holds it on. Last but not least, reconnect your battery.

We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.

Tools needed for replacement:

    Ratchets & Related

  • Ratchet
  • Socket Extensions

  • Screwdrivers & Related

  • Pry Bar

  • Sockets - Metric

  • 8mm Socket
  • 15mm Socket
  • 10mm Socket
  • 14mm Socket

  • Wrenches - Metric

  • 8mm Wrench


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