If you're changing the alternator, you can loosen it's bolts to gain some slack, but you'll need more.
This is done using the belt tensioner. It's a pulley looking thing in the belt path. On my '96, it's down and back from the alternator. It's surface is often very shiny and it has what looks like a nut on the front. If you put a wrench or socket on the nut, you can rotate the entire assembly away from the belt. That will let you get the belt on or off.
The Haynes manual has a pretty good illustration.
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In addition to moving the tensioner pulley, you might have to loosen the alternator to gain a little more slack space.
If you're changing the alternator, you can loosen it's bolts to gain some slack, but you'll need more.This is done using the belt tensioner. It's a pulley looking thing in the belt path. On my '96, it's down and back from the alternator. It's surface is often very shiny and it has what looks like a nut on the front. If you put a wrench or socket on the nut, you can rotate the entire assembly away from the belt. That will let you get the belt on or off.The Haynes manual has a pretty good illustration.FriPilot
You have to find the alternator then look at where it is connected to the motor there will be a slide mechanism that you will have to loosen which will release the slack on the belt so you can get it off.
The power steering pump has two adjuster bolts. Loosen the top bolt, and then the bolt underneath the pump (facing from passenger side) to give the belt some slack. The alternator has two adjuster bolts and one bolt to hold the bracket to the alternator. Loosen the bottom bolt (next to the belt), then loosen the top adjuster bolt. You should then be able to move the alternator towards the motor to slack the belt.
Taking off an alternator on a 1997 Honda Civic requires removal of the old belt. Loosen the belt pulley and pull it off when there is enough slack. Loosen the bracket bolts on the alternator. Be sure to unplug all electrical components and remove the alternator.
First you've got to loosen the tensioner pulley bolt. Loosen both bolts as usual on the alternator and that should give you the slack to take it off. If its already off then to put on a new one.
To replace the alternator on a 1995 Honda Civic disconnect the battery. Disconnect the wiring from the alternator. Loosen the adjustment bracket so the belt has slack. Remove the alternator belt along with the mounting hardware. Pull the alternator and replace it.
What kind of car? On an older car you just loosen the alternator and pull it until the belt is tight and then tighten the bolts back. On newer cars, there is a tensioner that pulls the slack out of the belt.
you will find a bolt at top alternator connecting it to the bracket arm loosen it a little. you will find another bolt parallel with the bracket tighten it to pull the slack out of belt. tighten the bolt connecting alternator to bracket
The hardware and electrical connector on the alternator that you'll have to remove or loosen is pretty direct. You may, however need more slack in the belt than the alternator's adjuster offers. In this case, find the belt tensioner in the belt path. A wrench or socket will fit on the front of it. Rotate until you get some belt slack, then pull the belt off of the alternator. NOTE! pay attention to the belt routing! If you have a diagram under the hood somewhere, good. If not, make your own sketch so you know how the belt routes. There's a good chance that you'll knock the belt off a couple of pulleys when you do the job. Getting it back on correctly is important. It helps to have another set of hands available to manipulate the belt. FriPilot
Loosen.
The tensioner rotates or swivels on it's mount to put some slack in the belt. You can usually get a wrench or a shallow socket on the nut that holds the pulley and rotate it whichever direction it needs. FriPilot