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Discussion Starter #1 (Edited)
I bought e new timing belt pulley from koyo, i can move the bearing side to side if i grab the wheel/bearing, it is not much, but you can definitely feel it, is that pretty normal for a bearing to have that side to side play/moving, or should there not be any movement at all??.. i can move it maximum 1mm from side to side..
 

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Is this the one that has three or four bolts that bolt it to the front of the block... it hangs down with a wheel on it, this wheel tensions the auxiliary belt? There's a hole in the plastic engine front covers for it to come through...

If it is, the tentioner in it's unloaded position may not have load on the internal spring (or hydraulic equivalent) which is perhaps where you're seeing free play. As the tentioner isn't used at either end of it's range capability this shouldn't be a problem. From memory there were some marks on these units that looked to me as if they were for measuring deflection, something like an arrow and two dots it should point within, I would assume these are for when it's running to check the movement range, but that's an assumption.

If it's just a bearing on a shaft, there should be nothing like 1mm of play from side to side... or up and down along the axis of the shaft. 1mm of play on anything with relation to a bearing is a huge huge gap.
 

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Discussion Starter #4
No it is the timing belts idler pulley.. the one that put tension the the belt thru the hydralic tensioner..
 

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There is a washer that goes behind it that is probably 1-2mm thick. You need to transfer it from the stock one.

Steve
 

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Discussion Starter #6
There is a washer that goes behind it that is probably 1-2mm thick. You need to transfer it from the stock one.

Steve
Yes i have that washer on, but still play in the bracket where the bolt goes thru, is that normal???
 

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Are you talking about the one with the sleeve? Yes, it should allow it to rotate and keep tension on the timing belt.

STeve
 

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Discussion Starter #8
Yes it is the one with the sleeve.. the tension rotates freely now.. but i can still feel play on the bracket in the sleev where the bolt go thru.. so would just like to know if that was normal..
 

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Yes, once the tensioner is pressing on it, that will go away and it will just rotate to keep tension on the timing belt.

STeve
 

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Discussion Starter #10
Yes, once the tensioner is pressing on it, that will go away and it will just rotate to keep tension on the timing belt.

STeve
Ok Thanks for answer..

The Red Arrow shows that it is in there i have play on the bolt that are marked with the yellow arrow when it is torque to the 35nm.. i think the maxium play are 1mm there..

 

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Discussion Starter #12
Are you saying the bolt is bottoming out with not enough threads in the oil pump?

I would get a Toyota idler pulley bracket. Or if you ever plan on doing aggressive cams, get a billet piece.

Al

I have tried 5 different pulley from toyota, same problem..tried 5 different bolts, 3 from toyota and 2 used i had in the shop, 2 out of 5 was a little bit longer, and problem solved.. only have the play back on the sleeve, that's seems normal to 1a1 replies..
 

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Correct. You're good. Don't overanalyze it. Make sure you use blue locktite on the threads of the bolt.

STeve
 
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