rounded timing belt idler bolt

Hello there. Currently, I am dealing with a rounded bolt holding in the timing belt idler bearing. I’ve trie vice grips and they don’t seem to work. I think I rounded the bolt using my impact. I’ve tried socket removers with no success. Additionally, I applied liquid wrench liberally with no success. What else can I try?

Just as important - where can I get the replacement bolt? It doesn’t seem like I can find one with a few quick searches. Should I try and match it with one at ace hardware?

Thanks!

Edit: 05 DC, 2UZ-FE

 

Add some heat to it if you don't think you will damage anything in the area, I don't remember there being anything too delicate in that area. Heat it, then douse it in more penetrant if you can get it back where it mates to the engine. Propane or MAP gas, probably don't need a rose bud on it or anything like that. I think it threads into the oil pump housing so make sure you replace the plate washer.

That is a bolt that is uniquely built for that application. You will have to get one online or from the Toyota parts dept. You'll see what I mean when you get it out.

 

Thanks!
A few questions: how long to Torch? I am using propane. Should I let it cool, if so, how long? And after that, should I use a socket extractor or something else?

thank you!

 

I wouldn't get it red hot or anything, as it threads into aluminum. Get it "a little too hot to touch" then spray some PB blaster or WD on it, the thermal "shock" should be enough to free it up. It might take a few iterations. Take your time with it and don't get impatient.

Did you put the bolt in to begin with? I think the procedure for timing belt replacement recommends thread locker, maybe someone before you used it? Thread locker has caused me more problems than it has solved so now I just use nail polish haha, a little sticky but not permanent.

 

if I remember correctly there's an oil passage behind that bolt which is why they require some sort of thread locker. But I'm not 100% on that

 

I messed up putting the bolt in. I initially removed it via impact, then I put it back on and torqued it to 30lbs. Then I realized I needed to change the idler and tried to take it out again and then this happened.