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After the crazy rain storms, mine is now making noise. I read this thread and started looking at the pulleys...they look like crap.

Especially the one on the generator...but looking at the diagram, its now one of the pulleys...its apart of the generator? I tried to spray some water into it and it quieted down for a bit, then started to make noise again. I also tried WD-40, and didnt help much.


This one didnt look too bad.


The one at the bottom is hard to take a picture of, it looks even worse than the one on the generator...

So..can I replace the one on the generator or do I have to get a new generator?...confused.
 

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Great write up....made this a very easy job to do. I replaced the 3 pulleys and the serpentine belt. Toyota wanted $900 for this job....cost me less than $200, using all Gates brand, and it took me about an hour and a half!!!
 

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To add a bit more info to this thread... For those interested, I've learned the bearings in the Toyota Idler pulleys can be replaced (just did mine a couple weeks ago)... They're about $15 ea (or less) for quality dual rubber sealed NSK, SKF or other bearings. Just hammer out the old dead bearings, and carefully press in the new ones taking care not to press on inner race, or seal. The only additional piece you need, like the Gates aftermarket pulley, is a sleeve to adapt the larger ID bearing for the 10mm mounting point.

Idler Bearing SKF PN: 6302-2rsc3 (needs 15mm to 10mm Adaptor sleeve) Dimentions: ID:15mm, OD:42mm, Width:13mm

Auto Tensioner Bearing PN:NSK BD17-31DUM (exact OEM replacement)

Haven't done the bottom Double bearing yet, but I'm sure it's replaceable too.

So, keep all your pulleys, buy bearings and carry pre-made ready to go replacements on teh trail for you next outing...


Hope this info helps.

Cheers!
NK

EDIT: I should note, the Bearing PN's above apply to OEM Pulleys on a 2007 model FJ. For some reason, I noted when I bought them as well, that the Gates pulley bearings are slightly different dimensions...
 

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Just an FYI these pulleys are NOT totally waterproof....well atleast not headlight deep in mud filled silty water proof... my 2 uppers and the tensioner pulley went after trudging through some stuff I really shouln't have.
 

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Just an FYI these pulleys are NOT totally waterproof....well atleast not headlight deep in mud filled silty water proof... my 2 uppers and the tensioner pulley went after trudging through some stuff I really shouln't have.
You mean driving in stuff like this?



and almost a month later I have this happen



Or is it because I have 113K+ on the FJ???

Thanks for the thread.. and the great suggestion of repairing the OEM p[ulleys and having spares!!
 

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Just tried the belt conditioner, no dice. I think the sound is coming from the pulley located on the alternator? Top one, nearest the battery..
 

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Help ! Replacing idler bearings , got the 3 idlers replaced , can't seem to get tensioner bearing to loosen . And thats the bad one ! Is it reverse thread ?
 

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Bolt just kept turning , never got it off . It is reverse thread ! Ended up buying whole new tensioner .
What a pain !
Redboat
 

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Changing the 3 pulleys tomorrow. Went with Gates. The part # for the tensioner said 07-09 so I didn't order that. Does anyone know the part # for the 2010?
 

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You mean driving in stuff like this?



and almost a month later I have this happen



Or is it because I have 113K+ on the FJ???

Thanks for the thread.. and the great suggestion of repairing the OEM p[ulleys and having spares!!
Actually I was talking about this...

 

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i just changed out the upper idler pulley and just cleaned one of the bottom ones that looked dirty. i've never in my life been car savvy and now all i want to do is play with my truck and do more stuff to it. i couldn't have completed this job without any hiccups without this post. so thanks so much!
 

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I replaced my idler pulleys over the winter to ward off any evil spirits. I used the the pulleys recommended in this post. I have a 2007 with a supercharger.

This weekend, I ran the air conditioner for the first time. I'm in Idaho and normally drive with the windows down, but drove to Boise requiring some highway miles and didn't want to deal with the buffeting from the wind. This resulted in a ringing sound coming from the engine that only occurred when air conditioner compressor was running. When I returned home, I found that the tensioner for the supercharger belt interfered with the air conditioner compressor as a result of not having enough standoff space due to the new pulleys. I replaced them with the old pulleys and the tensioner now does not interfere.

For those with a supercharger, you may need to add some spacers (washers) to the two idler bearing posts that the supercharger belt tensioner attaches to. You will also need to maintain pulley alignment. I will need to figure this out if I am to replace the two gates idler pulleys, but for now I am running the stock pulleys.

I had heard this ringing before with the defroster, but didn't put it all together then.

When I replaced the pulleys initially, I found that the replacement bearing posts for the supercharger were only inserted finger tight. I removed them and added some thread locker.
 

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Mine might be acting up but I can't catch it in the act to determine the location of the death squeal!

All I know is it sounded like a large high-pitched chipmunk or squirrel was caught in a belt and screaming, not the typical belt squeak. This was LOUD but intermittent. It hasn't done it again today to try and catch it in the act!
 

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Excuse me, but I was wondering if anyone would know how to tighten a serpentine Belt or how i can locate it (diagram), FJ Cruiser 08'trails team. I changed my pulleys but the belt is loose now and it squeals. i cannot drive it and would like to fix it asap for work. Any knowledge you could pass on to a newb weekend mechanic please?

Al
 

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If its loose , you probably don't have the belt routed correctly .
Look at the first post on page 1 .
Redboat
 

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I got the three upper and 1 lower pulley but I have a 2012. The ones I ordered are gates and I can't seem to find anything that talks about the 2012 models. Just to confirm, Is one of the upper pulleys the same part number as the belt tensioner? And does the gate pulley require any spacers?
 
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