Question about Mazda MPV
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: AC belt squeals under load.
The 1st thing I'd do is to get a spray bottle with water in it and spray the belt driving the compressor while the A/C is running and cycling on and off. If this quiets the squeal, it's probably too little belt tension. Check the belt driving the A/C compressor pump for sufficient tension. Do this by locating the longest part of the belt not touching a pulley. Depress the belt at the midpoint of this open span with moderate thumb pressure. It should not deflect more than about 1/2 inch. If it does deflect more, you'll need to increase the belt tension by putting more pressure on the belt route. Usually, there's some sort of bolt or machine screw on the compressor to do this. Increase the belt tension to the desired deflection. Warning - too much tension will cause premature failure of the compressor bearing!
No improvement to the squealing requires more help than I can provide you with.
Posted on Jun 22, 2009
SOURCE: alternator drive belt squealing
yeh, mine did the same thing with a hydralic belt. it was the bearings. mazda capellas use a lot of 6202 bearings which, luckily, are fairly cheap, and are commonly used in pool pumps. so you can find them at pool pump repair stores. although pool pumps use 6202 2RSR bearings. these are just the water proof type, but are excactly the same size and can be used.
to test if it is a bearing problem, remove the belt and try to twist the individual wheels by hand, you should be able to turn the 2 smaller ones.
from memory the alternator belt is in a fairly in accessable postition so the belt is going to be hard to put back on.try other things first, like wiping the inner side of the belt with a dry cloth to remove moisture.
worst case senario is your alternator has, or is starting to, seize up and you need to replace it.
Posted on Jul 11, 2009
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