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I have installed a universal AC system in the truck. The mount works fine. Its been the belt that is challenging. When driving without the compressor engaged, there isn't a squeak. If I'm cruising at a steady speed (60) there isn't usually a squeak. If I slow, accelerate, it squeaks. I'm running the Goodyear Belts 15425 V-Belt, 15/32" wide, 42.5" Length. This belt is working on my alternator without squeaks. (I relocated the alternator to the lower position instead of high left to the engine.) What would you suggest.
The outer pulley on both don't match up. The water pump pulley has a the space between the outer and middle groove. This is a universal A/C system and the closest thing I could find in the year of my truck for the water pump pulley. I also had to figure out how to have an idler pulley. Its like the one on post 13 in thread https://www.ford-trucks.com/forums/1...d-pulleys.html
Well, that’s sort of the problem with universal fit things, in my experience. I have no experience with installing A/C components, but I know I’d try to go to a shop that does it, they will likely have solutions. I ‘m not sure I’ll ever get A/C, but if I did, I’d bite the bullet, get a name brand system like Vintage Air, then take the truck to one of their authorized dealers.
Unless it is an optical illusion from the angle of the photo, I would say your problem is 100% a belt alignment problem. The idle pully is not in alignment with the A/C pully. I can't tell if the water pump pully and the A/C pully are in line. The belt will make a noise when under load if there is a lot of side load from misaligned pullies. The pully appears to be way out of alignment on this setup.
Unless it is an optical illusion from the angle of the photo, I would say your problem is 100% a belt alignment problem. The idle pully is not in alignment with the A/C pully. I can't tell if the water pump pully and the A/C pully are in line. The belt will make a noise when under load if there is a lot of side load from misaligned pullies. The pully appears to be way out of alignment on this setup.
+1 the idler pulley looks misaligned with the ac pulley for starters.
Also it looks like the AC belt is being driven by the water pump and water pump by the crank?
How do you know it is not the other belt on the water pump that is slipping when the AC is on?
Anyway to drive the AC belt off the crank as I dont think its good to drive it off something else other than the crank?
You also sure it is not the ALT belt making noise?
You now have the compressor and the fan using power that the ALT is trying to put back in the battery.
Dave ----
Run a straight edge along the back side of the A/C compressor pulley. The straight edge should run from the top of the A/C pully to the bottom of the idler pully and make contact with all four points (top and bottom of the A/C pully, top and bottom of idle pully).
The blue lines represent the extended line of the existing pullies. As you can see in the photo, not only are they not in line, but the idle pully is tilted back several degrees.
I worked on it this weekend. I found a belt routing diagram for the motor on a mustang forum. That with what y’all said I think I figured it out. I finished and found no belt squeaks. We will see how well later this week when I take her out for a ride. I appreciate your help.
