Blind bearing hole in case.

[Bigbill]

I’m trying to avoid making a blind hole bearing pulling tool. In the case the main input shaft for the tranny opposite the clutch I’m trying to pull that small ball bearing to replace it. I purchased a blind hole bearing pulling kit but it just slides through the bearing bore. Did anyone do this before? I was thinking of drilling two 1/16 npt pipe plug holes. Use a punch to push the bearing out then plug the holes. But that’s a last resort. Either i fab a pair of jaws or grind a set of jaws. Unless you guys have an idea.

 

[silverstreakNZ]

Heat it up and drop the case on the bench face down .
Or weld a bolt in the bearing it's junk anyway

 

[silverstreakNZ]

Fill the hole with bread and tap a snug fitting bolt in it . Repeat

 

[Oldscool]

Fill the hole with bread and tap a snug fitting bolt in it . Repeat

White or multigrain?.
Do you use bread cos the bearing is jammed?

 

[Dirtdame]

Heat your oven up to 450 degrees. Make sure the engine case is as oil free as possible. Stuff any bearings with tin foil (make it like a barrier that protrudes to the resting surface) that you don't want to come out. Put case on a cookie baking tray, bearing holes down. Bake for twenty minutes or until you hear a loud thud coming out of the oven. This works. I have done it with a KTM engine. Warning: Your house will smell like burnt motor oil afterwards.

 

[Crashaholic]

I use a cheap dent puller fitted with a barrel nut on the end.

I remove the clutch cam actuator from the case so I can get access behind the bearing. I slide the barrel nut down the cam actuator hole and using a screw driver I pivot the nut so the threaded hole can be seen through the center of the bearing. I then screw the dent puller on the barrel nut and pop the bearing out.

I've done this on several projects and it has worked every time, sometimes the bearing is stubborn but heat remedies that.

 

[GaryM]

To save your home just get one of the small toaster ovens for 75 to 100 bucks or so. They get up to the 400s plus . I do one half case at a time.

I call it my easy bake oven

 

[jimspac]

I used a retired stainless steel gas grill to replace bearings in the 80 250CR engine I worked on for a friend. No way was I going to use the household oven.
That would be justification for execution in our household.

 

[dumpbear]

I painted a head and cylinder and cooked them in the oven yesterday (while my wife was at work) she never said a word when she got home.Boy it was cold yesterday with the doors & windows open!!

 

[Darkside]

I painted a head and cylinder and cooked them in the oven yesterday (while my wife was at work) she never said a word when she got home.Boy it was cold yesterday with the doors & windows open!!

That reminds me of the old air cooled 2T days. remember Kal-Gard gun kote. I did my head and cylinder while my folks were at work. They weren't too happy if I remember correctly

 

[Kartwheel68]

I have a blind bearing removal tool set, but I also have a retired electric griddle/hot plate. Turn the griddle on with the case on it and let it sit, the bearings almost always fall out on their own.

 

[motomwo]

About 16 years ago I was at our local scrap metal yard looking for old Huskys and Maicos didn't find any that day but did find a good working electric stove/oven for $5.00 that has been in my shop ever since and use it many, many times baking motor cases. Sure makes removing bearings and sleeves easy.
If you use a bearing puller on cold cases,.. after doing that a few times the bearing bore looses its tight fit on the bearing.

Marty

 

[grouty]

Spot on Marty
I heat the cases and also have a can of "Plumbers Freeze" cold spray. Heat the cases, and if it's stubborn, a quick squirt cools the bearing and out it pops.

 

[Bigbill]

I purchased a blind hole bearing puller but it pulls through the bearing bore.

The rest of the bearings came out with my new 12t press. I purchased a small parts cleaner, next I need a sandblaster