How to tell which wheel bearing?

You are right on chap, I will refer to your post when I do a front wheel bearing. I have my own 10 ten ton press in the garage and will refer to your post when I do a front wheel bearing. You are very detailed with your instructions that will help a lot when doing one for the first time.

Very good post

Roy from Canada

 

Yes that is true, sometimes I try to help but forget the environment that you require to safely do the work - hot oil is a safety problem and should not be used without extreme caution.
Thanks for bringing this to my attention.

 

No extra sensors involved; just the iPhone itself is able to detect/isolate vibrations?

 

I find it astounding though, that the phone can pinpoint an issue, just hand-held, just positioned "somewhere" in the car's cabin. That's it, no additional mikes or whatever?

I know (with the app "cardio) it can turn on the camera's light, and when you cover it with a finger, determine your pulse rate. I'm mildly amazed by that, lol.

 

I had sound problems, halfway through the video. Thanks for the overview. That's impressive.

Another problem: I always nod off, watching that guy's videos.

 

Do you think you needed the car "running" to hear the noise, or was any diagnosis possible with it jacked up? (basically, does chassisear work with it jacked up too?)

Update: This thread mentions at least one way... All signs point to wheel bearing but it's not | Page 2 | PriusChat

 

Left rear. The G-load of a right turn making it louder. Have someone else drive it, sit in the back and lean your head out the window. Or drive along a wall and open the left then right windows, the noise will reflect off the wall.

 

<Bump> The only hard thing is determining whether the noise is from front or rear.
PriusTech (above) has an excellent suggestion about finding a quiet stretch of wall along which to drive and listen.
The back of a shopping mall is suitable, after closing time.
IMHO, replacement of bearings should be done in pairs (do both rears or both fronts at the same time) since it is likely that both bearing sets are at very similar points in their wear-out characteristic lives. Plus, if you're already set to do one side, it's a heck of a lot easier to do the other side at the same time.
The bearings (front or rear; relative to the total time/labor expense) are relatively inexpensive.
For Prius drivers north of the Mason-Dixon line, it's likely that corrosion will play a significant part in the difficulty of any bearing removal.
For the fronts, have a friendly machinist available with a good press. That machinist's vocabulary will expand.
For the rears, knock out two of the wheel retaining studs on the old hub assembly and use a pair of (4-inch long, 1/2-inch diameter) bolt and nut to extract the bearing from the bearing mount after removing the rear brake parts. I found liberal use of penetrating oil (Liquid Wrench) and patience (let the oil get to where it's needed, and it takes some time) is also very helpful.