Air cond. belt squeels and can't stop

Old Redneck

Old Redneck

Well-known member
When the air cond. is on in my 56 Ford and you start out it squeels until you back off the gas. I got the belt as tight as I can get it. It the belt I got with the kit when I installed the air condition. What the cure to correct this problem.:confused:
 
if your belt has the notches on the inside of the belt i would buy one with out them, a straigt belt has more surface to grip the pully, some belts are made of a harder rubber and dont grip right, also your setup may not allow enough angle on the pulleys to allow enough belt contact surface. there is a product out there that looks like a big crayon, its called belt grip, you touch it to the belt while its turning and it lays a film of tar like stuff on the belt to make it sticky, it works but its only a mickey mouse fix, and it isnt permante
 
check your air cond. head pressure , does it do it on very hot days or all the time?
Had the same problem on an older ford without a high pressure shut off, it had a blockage in the expansion valve, not to mention a too narrow belt.
Hope this helps.
Fordestes
 
You may think this is unrelated, but, is the battery fully charged? I have seen several late model GM products that have a belt slip when first started on a rainy day when the wipers and all the automatic lights come on. After three minutes, it gets better.
 
Make sure the belt is not bottoming in the crank or the water pump pulley. If they are painted the paint will be worn in the bottom of the V, the belt should ride in the V not the bottom of the V. Might be the right belt for the compressor but not for the pullies.
 
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