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alternator belt tensioner?

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Old 06-25-19, 04:58 PM
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zx10john
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Default alternator belt tensioner?

i was replacing my alternator belt and completely unbolted the tensioner (2 12mm bolts) and now I can't figure out how to put the tensioner back on.

does the block lift the alternator up causing more tension on the belt? so the long 12 mm bolt when you turn clockwise it pulls the block out more moving the alternator up.. or how does it work I can't figure out how to put the tensioner back on.

I also can't find where the shorter 12mm bolt threads into... any help would be appreciated, i tried watching videos but still can't figure it out.
Old 06-25-19, 05:52 PM
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LeX2K
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What year is your car?
Old 06-25-19, 06:30 PM
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zx10john
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Originally Posted by Lexus2000
What year is your car?
2002 es300
Old 06-25-19, 06:43 PM
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I'll upload a couple of pics in a few minutes.
Old 06-25-19, 06:53 PM
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Can't get a good pic of that area but I do have an alternator tensioner/bracket it's from a different car but same concept. Hope this helps.


Old 06-26-19, 07:26 AM
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zx10john
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is the smaller horizontal bolt supposed to thread into something? after sticking the smaller bolt through the hole i don't see/feel anything to thread into.

where exactly should that block be so that when you turn the longer vertical bolt clockwise it'll make tension on the belt? thanks.
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