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After initially thinking that a squealing from under the hood was being caused by the electric fans going out, I'm now thinking that it may in fact be caused by the alternator belt getting torn up somehow.
I'm guessing it might be caused by an unaligned pulley? Anybody else had this issue before?
I think it's the pulley. If it was the belt, it'd be making a mess at all the accessories with variable resistance (like the power steering pump). Even if the alternator was frozen, the belt should slip, sqeal, and smoke rather than shred. Is that pulley nice a shiny where the belt touches it, or has it been roughed up by a sand blaster or wire wheel or something?
79 J-10 (Honcho Mucho) KE0LSU
304/Performance Fuel Injection TBI/MTA1/SP2P/Magnum rockers
T18/D20/D44s&4.10s/33" Mud Claws
Grizzly Locker Rear
4" front spring drop, 5" rear shackle flip
Chevy style HEI (ECM controlled)
Dolphin "Shark" gauges in a fancy homemade oak bezel
3/4 resto, rotting faster than I've been fixing it.
will e wrote:What engine are you running? All of my V8 AMC's have used dual belts for the alternator.
Yep, should be dual pulley and my belt runs on the outer pulley. Did you recently replace the alternator (looks fairly new)? If you did, you should have spun the old pulley off your old one with an impact wrench and swapped it to the new one. New one I got was fitted with a single pulley. Had to swap my old pulley over. After you do that, if you still have the alternator, you of course need to get a new belt.
AFAIK it's a 360...just bought the vehicle a couple months ago.
Prior to replacing the alternator and belt there was the same type of belt dust being thrown around, makes me think the alignment is out of whack. I'll throw some shims in and see if I can get it straightened out.
Let me look and see if I can find out what brand belt it is, I just snagged one from Autozone when replacing.
The old one must have been a replacement as well, it only had a single pulley on it. Anywhere I can source the dual pulley or will I need to scrounge around for a used one?
Your power steering pump should be on the outer most pulley grooves.
Your alternator is not in the position it would be in if the car had AC. I don't know if they placed it in a different position without AC.
Did you Jeep originally have AC?
On my jeeps the adjuster bracket is on the bottom of the alternator, not the top.
I don't think it came with AC originally, but I'm not 100% sure on that. There doesn't seem to be any controls in the cab for AC, just the heater and vent.
Is the power steering pump supposed to be running 2 pulleys as well? I'm guessing that middle groove is for the second alternator pulley then?