The Stovebolt Site Forums The Parking Lot '60-'66 Trucks Alternator Bracket Bushings

I have a 66 suburban with a 292 in it. The alternator bracket that mounts on the drivers side of the block, down next to the oil pan, has 2 tabs that stick out for the alternator to mount to. The bolt fits the holes in the alternator, but the holes in the bracket are different sizes, and larger than the bolt. I assume that some kind of metal sleeve in a rubber bushing is used, but I can't find anything in the manuals or parts catalogs. Does anyone know what goes in there, and where I may find them. Thank you for your help.

I have a 1965 C10 and I parted out a 1966 C10. Both had brackets like you describe. I don't think that there is anything but a bolt through the bracket and alternator. It is meant to pivot on the bracket but once locked in place, it stays in that position and really should not move. If yours is different, then you could just use metal tubing inside the loose piece to create a bushing.
I suspect that it will not be needed.
Can you post photos?

Lugnutz, thanks for the reply. No, I don't have any pics, but I need to check to get more accurate info. Off the top of my head, it looks like a 5/16 bolt, and the holes in the bracket are say 1/2" and 7/16", just guessing. I took it apart about 3 years ago, and I don't see any other parts. The bracket is a cast stock appearing piece, not a fabbed up one. Normally you see a rubber mounted bushing on a generator, but not necessarily on an altenator. Thanks again.

The front mount bracket should be 3/8 in. The rear is larger & should have a sleeve that is a tight fit in the bracket hole. It slides in the hole to take up exsesive clearance between the alt & the brackets. The front hole could be wallered out from a loose bolt. It takes a long 3/8 bolt to go all the way through. The upper adjustement bracket bolt is 5/16 coarse thread. Some of the later models used a metric bolt near the same size.

Thanks for the input wrenchbender, I don't have time tonight, but tomorrow night I will take a closer look at it to make sure I'm on the right page.

This is a pretty decent view of my [size:11pt]lower alternator bracket[/size]. I just upgraded to a 1 wire alternator and used my 1965 factory brackets.

Well, I took a look at the bracket last night, and took some dimensions, and it agrees with what you guys have told me. A 3/8 bolt, the front hole is washed out, and the back hole is .515 dia. for the sleeve. So, I figured I would take it too work, bore out the front hole, press a bushing in it, and make a sleeve for the back hole. I put a pin gage in the big hole to align it against an angle plate, and that front washed out hole is no where close to being on the same centerline as the big hole. I double checked everything there, and then come home and checked the block, alternator, etc, to make sure nothing is skewed. Evidently, that is why there is no bushing in the back hole, just to get it to line up. Unless somebody knows something that I'm not seeing, we'll fix her. Thanks again for all of your help.