Removing motor bearings

[GoodKarma]

Okay, it's a nice rainy day, and I want to try and get the bearings changed in my Tri-Z today. I have been told to put the cases in the oven to warm them up, and the bearings will come out easily. Who can be a little more specific? How hot, how long, will I have to run out to the garage and beat them with a hammer? Can I just tap them with a rubber mallet and they should fall out?

If and when I get them out, then I put the new bearings in the freezer and cases in the oven? Again, is there some beating and hammering required, or things just fall together?

Okay, I know if someone has done this, these might sound like stupid-*ss questions, but I don't want to break anything! I don't think the next door neighbor would appreciate hearing me beating on the counters with a hammer (damn duplexes with paper-thin walls ).

Any other helpful hints before I jump in? :beer :beer

[jason 32]

i have done the oven thing yea it works- if you use your good oven it will leave it with the oil and alluminum taste in it
i have hammered them in and out- no problems-
take your time!!
if you want soak the cases in boiling hot water- use gloves and tap them out,if hot enough they will fall out anyway-
baking- got hot untill water sizles as it is dropped on it-- i dont like this because it can warp them - especially as they cool quickly-- remember there not bolted together so they can warp easier
if you put the case in your lap on a thick towel it will help and he won't here as much!!-lol
a big socket will help so you dont hit the case
-- freezing the berrings didnt help-for ***DONT TYPE AROUND THE WORD FILTERS***
assembling -of corse you cant heat it will ruin the new seals---
press in the new seals or heat the cases with water /or tap them in

[GoodKarma]

Sweet, someone has offered some suggestions! I was beginning to think that I was the first person to attempt this feat of such great proportion!

I kind of like the boiling idea, but I have to see if I have a pot (cooking pan) big enough to handle the chore. If not, then I will work with a low heat, maybe 200 degrees, and see if things start to fall apart. I too was worried about the warp issue, and I will keep this in mind.

Thanks again, and any other suggestions or comments are always welcome!

[jason 32]

i think its around 400 degrees- just untill water sizles as you drop it on
i just poped them out w/a hammer-all of'em ive done i never busted a case
the cases are stronger than people think- they have to be to withstand the abuse-
but i don't want to suggest anything bad for you to do--

[Bryan Raffa]

putting it in the oven will heat both the case and bearing and they will both expand! you need to use a torch to heat the case only and then tap the bearings out.. then you can do the oven trick if you like to put them in..but i like to use the torch to do this cuz you can put heat directly where you need to and you can still handle the case! dont get me wrong the oven trick works for gettin them out! but ive have found the torch is easer.

[GoodKarma]

Wow, now I have to chose which direction to take! Thus far I have the oven, boiling, and a torch. I also am looking at buying a bearing puller, but not sure if it will handle all the different sizes I need to deal with. Hmmmmmm, decisions, decisions?

I'll continue to hear your suggestions before I get too deep into this:beer

[jason 32]

nooooooooooooo no torch!!!!!!!!!!!!!!:mad: :mad:
you will warp them!!!!!!:eek: :eek:
the oven doesn't expand the berring i have done this process!!!:crazy: crazy huh- but its true-
put it in a bucket of boiling hot water--- let set for a few minuts ,if it doesn't fall out tap it out-no problems:w00t:

same thing with removing studs-