Topic: York Clutch Bearing

[Jeffy]

Anyone replace these before?  I think mine's growling.  I'm not 100%

[FourbangerYJ]

http://www.links4jeeps.com/writeups/york/yorkrebuild/

This might help. They are pretty simple from what I understand. It should just unbolt from the compressor.

[Jeffy]

http://www.links4jeeps.com/writeups/york/yorkrebuild/

This might help. They are pretty simple from what I understand. It should just unbolt from the compressor.

Taking teh clutch off the compressor isn't the problem.  It's removing the bearing from the pulley.  There are two C-clips and you have to screw in bolts from the face to get it out.  I'm wanting to replace the bearing and not the whole clutch assembly as they are $$$ while the bearing is $.  I might have a lead on the bearing but I'll have to call a friend.  I'm not 100% sure on the bearing size though.

[Jeffy]

Well I turned on the compressor while driving and it still hums.  So it's the alternator.  In which case I suspect the battery is really at fault.  I'll probably check the alternator and see if it spins freely.  If I have to I can swap in my 75A stock back in and see if it makes noise still.

[sharpxmen]

Well I turned on the compressor while driving and it still hums.  So it's the alternator.  In which case I suspect the battery is really at fault.  I'll probably check the alternator and see if it spins freely.  If I have to I can swap in my 75A stock back in and see if it makes noise still.

why would the battery have anything to do with the alternator noise (assuming it's the bearings)?

[jfrabat]

why would the battery have anything to do with the alternator noise (assuming it's the bearings)?

I suspect it is not because of the bearings but rather from the increased strain put on the alternator from the lack of voltage from teh battery...

[Jeffy]

I suspect it is not because of the bearings but rather from the increased strain put on the alternator from the lack of voltage from teh battery...

You get a cookie! 

[sharpxmen]

I suspect it is not because of the bearings but rather from the increased strain put on the alternator from the lack of voltage from teh battery...

if the battery was that dead then it wouldn't start, plus would be the same thing as when running with high beams, spot lights, stereo, etc on - would be no different (as in having the alternator under load, it would still have to provide the load current). The noise is made by the belt on the pulley (if that's what we're talking about), so it would make that noise under the same load regardless. Can also be an old serpentine belt btw. If it's bearing noise then it doesn't matter if the battery is dead or not, it would be noisier under more load but replacing the battery won't fix the bearing issue - might as well be both.

[Jeffy]

The battery is an unknown at this point.  It seems to read low when cold.  Gauge reads just above red but it dives down when starting under the amp load.  After driving around for a bit it will read 12.7v or around then then drop to 12.3v in a few seconds.  I think it might have a bad cell or just old.  I've put it on a charger once but didn't really change anything.

The belt is pretty new.  It's not a belt squeal anyway.  More like the noise when you leave your lights on and start up the engine.  Alternator under load.  It happens at idle and is pretty loud at a cold start.  Seems to smooth out so you can't hear it at 1500 rpm but starts to come back at 2500 rpm.  Has that sort of air-cooled Porsche sound to it.  It doesn't really go away like when charging a battery which could just mean my battery is old and shows under load.