Hey y’all. New to the forum. Just picked up a super clean 2005 Limited Roadster.

Needed a new alternator so I swapped that out yesterday. When I took the belt off. The top idler pulley separated into two spools off the rotating hub. Is this normal design? I’ve never seen a non fixed two piece pulley wheel like this before.

I’m referring to the actual pulley wheel with the grooves in it. When the belt came off, the front and back portions of this pulley came apart right in the middle on the rotating hub bolted to front of engine. It doesn’t look broken. The central hub is sprocketed and the pulley pieces are grooved to fit onto these sprockets. When the belt is back on and under tension, it holds the two pieces of the pulley together and in place and everything spins just fine.

Is this a normal design???? Or was the pulley wheel originally adhered together on the central hub and for whatever reason has come apart at any potential seam in the middle?

Thanks

 

Never heard of a 2 piece. Mine's one.

 

Well, I’ve never seen one either. I suspect the pulley is probably two pieces which are pressed and glued together in the middle over the central hub and that they’ve separated. At this point, the tension of the belt in the grooves is holding it “together”, but I’ve ordered a new pulley which will arrive tomorrow. Easy enough to swap the new one on.

I’ll post a pic of what is going on with the old pulley once I remove it to give you a visual.

 

An idle pulley came apart like that on a car at a Dragon meet maybe two years ago. The car was making noises, and one of the guys diagnosed it as a bad idler.
They found a new one at a parts store in (I think it was) Murphy, NC; when they took the bolt out of the old one, it came apart in two pieces.

I dont know if all of them were made like that, or only certain years, or only certain aftermarket ones were - cause the one I changed on my Graphite roadster did not come apart like that.

 

Swapped out new pulley. This is the old pulley completely separated right down the middle off the hub. Clearly the pulley wheel s comprised of two pieces pressed together over the sprocketed hub and somehow adhered to one another. I suppose the only thing holding the two pieces together on the hub was the belt in the grooves! Yikes!!!