Gates 38018 Tensioner Pulley

Gates 38018 Tensioner Pulley
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Tuesday, May 5, 2015

Gates Tensioner Gates 38163 Belt Tensioner Assembly

Gates Tensioner Gates 38163 Belt Tensioner Assembly

Gates Tensioner Gates 38163 Belt Tensioner Assembly

Gates Tensioner Gates 38163 Belt Tensioner Assembly

I drive a 2006 Jeep Wrangler with 4.0L engine. I have reached 85,000 miles and had already replaced the serpentine belt. I have read that it is also recommended I replace the idler pulley and automatic belt tensioner.

The Gates 38163 is almost completely identical to the original OEM Chrysler/Mopar part.

Here is my experience installing it.

Things you'll need:

* 1/2in drive breaker bar
* 3/8in. drive ratchet wrench
* 3/8in. drive Torx T40 bit
* (optional) new small rubber grommet
* (optional) thread locking compound

First, it is a good idea to take a picture of your serpentine belt and how it winds around your engine and pulleys.. There is supposed to be a belt routing diagram on your radiator, but often this label is often damaged. A picture is worth a thousand words.

Depending on your tools, it may be easier to remove the fan shroud and clutch fan so they won't get in the way. I won't cover this here.

Insert the square part of your breaker bar tool into the square hole in the middle of the tensioner arm. You turn the breaker bar to tighten the arm spring and remove tension from the belt. While holding your breaker bar, carefully remove the belt from one of the pulleys - then carefully relax the arm. Remove your breaker bar. The tensioner arm (and serpentine belt) is now ready for removal.

Attach a high quality Torx T40 bit to your ratchet and carefully remove the bolt securing your old tensioner arm to your engine. Take care not to strip the head as you loosen the bolt! You will reuse this bolt on your new belt tensioner.

Once you've released your old tensioner arm, do not remove the bolt from tensioner arm yet.
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Gates Tensioner Gates 38163 Belt Tensioner Assembly

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