Builds Woody (3 Viewers)

[majdomo]

Nice work! My question to you is, was the compressor pulley making noise? Maybe I missed that part in your thread. I have an 84 which came to me without the belt attached and all hoses disconnected. The one thing I noticed with my pulley is it spins freely, like fairly easily. Any idea if that is normal?
Thanks, Matt

Definitely normal. If you look at yours, there should be a clutch plate that attaches to the shaft of the compressor in front of the pulley. The pulley and bearing sit on a boss (that silver cylinder in the center, the threaded post is the compressor shaft) that is concentric with the shaft and part of the compressor body. When you hit the AC button in the cabin, that energizes an electromagnet pulling the clutch onto the pulley, mating them together and driving the compressor shaft. This cycles on and off based on the pressure in the system.

The part that's making a little noise is the inside of the pulley rubbing on part of the electromagnet assembly - it may be slightly out of round or something but it still works fine. You can see the witness mark down below.

 

[k91]

Definitely normal. If you look at yours, there should be a clutch plate that attaches to the shaft of the compressor in front of the pulley. The pulley and bearing sit on a boss (that silver cylinder in the center, the threaded post is the compressor shaft) that is concentric with the shaft and part of the compressor body. When you hit the AC button in the cabin, that energizes an electromagnet pulling the clutch onto the pulley, mating them together and driving the compressor shaft. This cycles on and off based on the pressure in the system.

The part that's making a little noise is the inside of the pulley rubbing on part of the electromagnet assembly - it may be slightly out of round or something but it still works fine. You can see the witness mark down below.

View attachment 3973152

Wow, very detailed explanation..thank you! Makes me even more curious why whoever disconnected all of my AC bits did it.
Matt