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From: Tegger on 17 Feb 2010 20:36
"Steve W." <csr684(a)NOTyahoo.com> wrote in
news:hli57v$dcn$2(a)speranza.aioe.org:

> condor_222(a)yahoo.com wrote:

>>
>> 2)
>> How do I create more tension on the 1999 Lexus alternator belt?
>> - move the alternator, or
>> - move a pulley into tension, or
>> - something else? what's the secret?
>>
>>
>> Thanks a lot!
>
> Nothing to adjust. It is self adjusting with a spring loaded
> tensioner. On a V belt it has to be tighter than a contemporary
> serpentine belt as well.
>


This one adjusts via the alternator. I posted a reply that contained the
method, but I left in all the cross-posting that you stripped, so maybe the
news servers didn't like it.

Here's my answer:

The secret is: one bolt above the alternator and two underneath it. I
think they're all 14mm, but I'm not certain.

The one above (points to the SIDE) must first be loosened slightly.

The one below that points towards the SIDE of the car (same as the one
above) also needs to be loosened.

After that, you turn the one below that points to the FRONT of the car
until the alternator belt has the right amount of tension. Clockwise
will tighten.

Then you snug 'em all back up again. Piece of cake.




--
Tegger

From: Jeff Strickland on 17 Feb 2010 22:34

<condor_222(a)yahoo.com> wrote in message
news:0f597bb2-4c78-4978-b780-d000f887b0f4(a)o3g2000yqb.googlegroups.com...
> Dear Experts,
>
>
> I have a 1999 ES300, V6. Very similar to the Camry V6.
>
> I'm visiting Canada now (with the car), and it's really cold.
>
> For those of you who don't know, rubber is contrarian;
> rubber actually expands in the cold.
>
> So, my timing belt has stretched. When I press
> my finger beside the alternator, the belt has a lot
> of movement and give. It needs to be tightened.
> (Tires need to filled with more air too, and readjusted
> in the spring.)
>
> On the two Fords that I used to own, there were two
> different ways to adjust the belt.
>
> One had the old style, with a belt dedicated to the
> alternator. To tighten the belt, you loosed an alternator
> bolt, levered the alternator to make the tension high,
> and then tightened the bolt down. Similar to this:
> http://forums.motivemag.com/zerothread?id=3490925
>
> Another Ford had a big serpentine belt. To make
> more tension, you first loosened the lock bolt,
> turned a screw assembly to push a pulley into the
> serpentine belt, creating tension, and then
> tightened the lock bolt.
>

I don't know what Ford you had, but my Fords have a spring loaded tensioner
that never needs adjustment.

Me thinks your Toyota might be the same.






From: john on 17 Feb 2010 22:37
No, a serpentine belt transfers power from the crank pulley to all
accessory drives.

Yours is an alternator/AC belt. You also have a power steering belt.
This setup is an old jack screw (for Alt/AC) and slide rail (for PS)
adjuster design. It's cheap and clearly doesn't try to main proper
tension automatically as in those serpentine systems using automatic
tensioners.

So as described, you need to loosen the lock bolts and pivot bolts and
either turn a jack screw or use a pry bar against the PS pump to
adjust tension. Ideally, you'll need a Krikit-II gauge if not a more
versatile tension gauge. The Krikit-II is about $20 on Amazon.



On Feb 17, 4:01 pm, condor_...(a)yahoo.com wrote:
> 1)
> on the 1999 Lexus es300, the belt for the alternator is
> actually a serpentine belt, correct?  Meaning, that it
> connects multiple components.
>
> 2)
> How do I create more tension on the 1999 Lexus alternator belt?
> - move the alternator, or
> - move a pulley into tension, or
> - something else?  what's the secret?
>
> Thanks a lot!

From: john on 17 Feb 2010 22:43
Must be a 1908 Model T. :D

No, Yota uses cheap jack screw and slide rail tensioners.


On Feb 17, 7:34 pm, "Jeff Strickland" <crwlrj...(a)yahoo.com> wrote:
> I don't know what Ford you had, but my Fords have a spring loaded tensioner
> that never needs adjustment.
>
> Me thinks your Toyota might be the same.

From: FatterDumber& Happier Moe on 18 Feb 2010 04:50
condor_222(a)yahoo.com wrote:
> Dear Experts,
>
>
> I have a 1999 ES300, V6. Very similar to the Camry V6.
>
> I'm visiting Canada now (with the car), and it's really cold.
>
> For those of you who don't know, rubber is contrarian;
> rubber actually expands in the cold.
>
> So, my timing belt has stretched. When I press
> my finger beside the alternator, the belt has a lot
> of movement and give. It needs to be tightened.
> (Tires need to filled with more air too, and readjusted
> in the spring.)
>
> On the two Fords that I used to own, there were two
> different ways to adjust the belt.
>
> One had the old style, with a belt dedicated to the
> alternator. To tighten the belt, you loosed an alternator
> bolt, levered the alternator to make the tension high,
> and then tightened the bolt down. Similar to this:
> http://forums.motivemag.com/zerothread?id=3490925
>
> Another Ford had a big serpentine belt. To make
> more tension, you first loosened the lock bolt,
> turned a screw assembly to push a pulley into the
> serpentine belt, creating tension, and then
> tightened the lock bolt.
>
> Questions:
>
> 1)
> on the 1999 Lexus es300, the belt for the alternator is
> actually a serpentine belt, correct? Meaning, that it
> connects multiple components.
>
>
> 2)
> How do I create more tension on the 1999 Lexus alternator belt?
> - move the alternator, or
> - move a pulley into tension, or
> - something else? what's the secret?
>
>
> Thanks a lot!

You probably already googled this but here it is just in case you didn't,
http://us.lexusownersclub.com/forums/index.php?showtopic=55588
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