So my ac compressor pulley is seized and it it destroyed my serpentine

>>13949492
belts the wrong size

>>13949519
It fits the grooves on the pulleys, how much should I tighten the tension pulley?

problem is op is dumbfag

>>13949536
until it stops slipping?

>>13949557
Should there be any play in the belt once it's tightened? Is it possible to be too tight?

>>13949536
use a 3ft pry bar and put some pressure on the alternator then tighten

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>>13949563
?

do it until it stops slipping, no more
how hard is this?

>>13949563
there should not be any play.
The auto tightener (the one you have to turn with a tool or wrench to remove the first belt) should take up all the slack, if it doesnt you are not running the correct size belt.

>>13949563
yes, the belt should have some deflection. Yes you should buy a gauge to tell. Just google the Gates Krikit II.
Tension it to what the factory spec is. Might as well take the AC compressor off.

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>>13949492
Your replacement belt is probably too long.

If you just asked for a "non A/C" belt at the parts counter, you probably got the wrong size, because A/C and non-A/C vehicles were built with different idler pulleys.

Most tensioners have some sort of marking on them to indicate how tightly they should be wrapped when the belt is installed. Look for that. Get a smaller belt as necessary.