2008 tacoma v6 alternator

First im pretty sure I have a tacoma addiction. Just bought a beautiful 2008 dcsb off road with 239000. It has everything I wanted for 9000 bucks. New frame and its easy on the eyes not like the rusted pieces of shit I usually buy. Anyway it was running great and the battery light comes on. Bad alternator no big deal. I'm putting the rebuilt unit in and when tighten the lower bolt the pulley won't turn. If I loosen it turns. Any thoughts. It does feel like there's some wiggle almost like there should be a bushing. It felt tighter coming of the mount then when I put it back on. It is the original unit just rebuilt. Tia

 

I bet the sliding bushing is seized in the alternator case.

 

Not the answer you want but over the years I’ve learned not to go with rebuilt alternators. They’ve failed on me and other people I know.

 

If I am understanding properly. The alt pulley will not spin when you tighten the lower bolt? I don't see how they are connected. Or, I am not understanding what you are saying.

 

I think when I tighten the lower bolt it puts torque on the case and jams the pulley axle. I'm going to take it back out and check bushing. I dont understand how it moves and how it pulls itself into the mount.

 

The purpose of the sliding bushing is to take up any space between the alternator ears and the boss on the engine due to slight differences in manufacturing tolerances.

The bushing is an interference fit in the alternator case, as the bolt is tightened it should draw the bushing tight against the boss on the engine.

You typically have to "reset" them by tapping them out slightly with a hammer (don't hit it too hard or you will break the ear off) to make it easier to reinstall the alternator.

 

I think mine was adjusted all the way out by the guy who rebuilt it. It felt like it slipped over the mount with room to wiggle but as I tighten it never really got tight. I think I'm gonna pull it out and spray the bushing with lube and see if it moves. If that doesn't work I guess I might have to buy a new alternator.

 

Good call on the bushing. I took it out and there was a ring of corrosion that wouldn't allow it to slide all the way in. I polished it and it worked perfect. Thanks for the help.