Serpentine Belt

jsm

New member
I want to change the serpentine belt on my wife's 05' v6 4runner.
I looked, but could not tell which pulley releases tension on the belt. Any info...Thanks.
 
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Belt replacement

In case you missed it in the link referenced above, the V6 does not have a serpentine belt, it has a timing chain that generally does not need replacement.
 
mike508 you might want to double check that

serpentine not cam, maybe I read it (and the links) wrong... sorry if I did
 
Re: Belt replacement

mike508 said:
In case you missed it in the link referenced above, the V6 does not have a serpentine belt, it has a timing chain that generally does not need replacement.

The V-6 does have a serpentine belt aka (Accessory Drive Belt). It drives the A/C compressor, alternator, water pump/Radiator fan, and the power steering pump. It is turned by the crank pulley at the very bottom front of the engine. There is no replacement mentioned in the maint. handbook, but every 3-4 years is not a bad idea. It is relatively cheap and a quick DIY item.

It also has a Timing Chain also. And you are correct they normally do not need replacement for the life of the engine.

The V-8 also has a serpentine belt and it drives the same items listed above.

The V-8 has a Timing Belt which requires replacement every 90k miles since the 4.7L is an *Interference Engine*. If it were to break the pistons will hit the valves and cause a very costly repair.

If the serpentine belt breaks in either case it is not a huge deal. You may be stuck on the side of the road because if you continue to drive you will overheat the engine very quickly.:biggrin2:
 
Atlanta_man said:
mike508 you might want to double check that

serpentine not cam, maybe I read it (and the links) wrong... sorry if I did

Sorry, you are absolutely right. I guess I thought the subject was the timing belt, not what used to be known as a fan belt that every car I known of has.
 
jsm said:
So, the tensioner pulley...what do all use to take off the tension?

use a socket that will fit the bolt in the center of the pulley and a breaker bar or 1/2 inch drive socket wrench. Then push or pull it either way until you see the tension release. It is easiest with 2 people. 1 to hold the breaker bar and 1 to put the belt off and on. You do not crack the bolt or nut loose.
 
jsm said:
So, the tensioner pulley...what do all use to take off the tension?

The tensioner is to the right side of the fan. Just locate the alternator pulley on the right side (while standing in front of the engine) and you'll see a pulley just to the left of it. It's the one underneath that pulley.

Sorry if that's confusing. I'll post a diagram for you in a minute.
 
The tentioner is the pulley in red. You'll move it counterclockwise to remove the tension off the belt.
 

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One other thing I forgot to mention-- there's a hole in the tensioner bracket that you can use to hold the tensioner in an "open" position while you swap out your belt. You can use something small like the end of an allen wrench to stick in the hole to keep the tensioner pulley open.
 
I just recently replaced my serpentine belt on my 2007 4Runner, and now I have a "ticking" sound when I start up my car; it only happens for a few minutes while i am warming up my car. I checked to see is the new belt is binding or hitting anything , but nothing...Any clue or suggestions?!?!??
 
whats the right belt for nthe v6 7pk2119 or 7pk2120?
i ordered the belt off amazon and received 7pk2119 . 15/16'' thickness n 84'' length
 

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