All I need is a good machine shop to press the old ones out and press the new ones in right?



There is no real special way that they get installed, correct?



The place I took the rotors to was wondering about the little bent over tab that holds the bearing in place, he was wondering if thats a special loctating tab......



Also I've heard that the new bearings should be put in a freezer to make them "shrink" a little to make them easier to install. Any truth to that?



Thanks guys



Joe

if they couldnt figure out the locking tab by looking at the old one, yikes!

Man, I thought the same thing!



Yes, anyone with a clue and a press should be able to do it. Yes, stuff the bearing in the freezer before you try to press it and it doesn't hurt to heat the rotor slightly. Yes, the tab is here to lock the bearing. It needs to line up with the slot in the rotor.

The alignment tab serves no purpose. There is no indexing feature that must be maintained.

I grind them off of the bearing.



I have yet to heat a rotor or cool a bearing for installation. Just a film of red Locktite, and a slight chamfer on the bore in the rotor, so it doesn't shave any bearing. You should make up a bearing pusher for main and rotor bearings. The pusher should have a flange so the bearing stops at exactly the right depth. That way a fairly stupid press operator can do it right. In my case that would be me.



If you hose the bearing with a missed shift or whatever. That tab will keep the bearing from spinning for about 1 nanosecond. However that tab can ruin an engine if the bearing is pressed in and the tab is not lined up properly. It will raise a lump in the bearing and make it fail, if you can even get the crank through it.

If that happens to you, just die grind the lump off and go on with your life. It won't hurt a thing.



Lynn E. Hanover

I have acheived the best/easiest results with an Arbor press instead of using a hydraulic press. the mazda factory tool is pretty snazzy also

Does Mazda actually sell the tool for removal/installation? What does it cost?

Yes. The rotor bearing tool is listed in the FSM as 49-0813-240 and the main bearing tool is 49-0813-235. Neither number works on Mazdacomp's site so I couldn't find the dealer price. Mazdatrix wants $87 and $71 respetively. They're very nice tools with removeable stops for installing the bearing. When you take the stop off the tool is the size of the ID of the rotor/stat gear so it will cleanly push the bearing out. I was lucky enough to get a set off Ebay a few years ago.



http://www.mazdatrix.com/pictures/tools/brgrotor.jpg

Once again guys, thanks for the info.



Your help is greatly appreciated!!

the tools dont come from mazda, so they wont show up in the parts database (yes the comp database is shared with all the dealers and whomever else)

oh-oh II got MIKEY!!!!!!!!!



Part No.

0000-09-0103

Description

MAIN BEARING PULLER AND INSTALLER

Notes

To install or remove main bearings from stationary gears. #49-0813-235

I cant show the price on mazdacomp due to my racers agreement



On the Comp PArts PAge, scroll down on the first pick menu to "SPECIAL TOOLS"; all the special tools are then shown.