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DIY: Replacing A Serpentine Engine Belt

The serpentine drive belt is what keeps your battery charged, your engine cool, steering easy to turn and keeps you cool when it's hot enough to fry bacon on the sidewalk. But how often do you really think about it? Not often enough I'll wager.
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» That Old Myth...
» That Old Myth...
» Let's Get This Straight...
» Those Who Are Idle Work Here...
» Automatic Tensioners...
» I Can Use A Belt...
» Serpentine Drive Belt T/S
 

Now, Let's Get This Straight...

The next thing to check is pulley alignment. Lay a straightedge flat on one pulley. If the next pulley in line doesn't line up, you have a misalignment. Check all the pulleys in this manner to identify all the misaligned pulleys. Most times you can correct a misalignment by using washers as shims to move an assembly backward or forward. Broken brackets, naturally, will have to be replaced and any loose brackets tightened. In the case of pressed on pulleys, check to see that the pulley is at a perfect right angle to the shaft. If not, it's probably damaged and needs to be reset or replaced.


Angular misalignment


Parallel misalignment

1986 through 1990 General Motors products equipped with 3.8 liter engines were especially prone to pulley misalignments.

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» Part 5       » Part 6       » Part 7
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ALLDATAdiy.com and Warranty Direct
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