Crankcase bearing removal

[2006 _p1]

Im trying to take my crankcase bearings out but they don't seem to want to budge.

Ive tryed heating them up but no luck. Its hard to get behind them and knock them out.

Is it best to take it to the shop and get it done?

Or you have any neat tricks to get them out?

Thanks

[2006 _p1]

Anyone?

[Jockey]

Have you any pictures, people need them to evaluate just what you are doing, as it stands it sounds as though you are heating them instead of the surrounding casing, is that correct?-Jockey.
____________________
Current bike VFR 400 R NC30, others now gone.

[Pete.]

what bike, and yes pics would help too
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[2006 _p1]

This is it.... i cant get in behind the bearing to give it some welly. I heated the case and the bearing.

https://i77.photobucket.com/albums/j76/pit_bike/Picture004-2.jpg
https://i77.photobucket.com/albums/j76/pit_bike/Picture003-2.jpg

[Pete.]

No reason why it shouldn't come out. I would make a stepped drift to press it out from outside. If you have a socket that will fit through the hole in the casing and catch on the inner race, you might be able to use that as a drive. Probably will have to sacrifice the seal, better yet remove it first if possible.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[2006 _p1]

The inner race is like inline with the case so i doubt a socket will get on it. I dont mind about the seal really i will take it out tomorrow and see how it goes.

[stinkwheel]

You are not using enough heat.

Put the whole thing in the oven and leave it there until it is fearsomely hot.

The bearings will probably fall out by themselves (listen for the clunk from the oven), if they don't, gentle tapping with a drift should persuade them out.

Remember to wear thick leather gloves to handle them. Welding gloves are ideal.

I was doing the reverse of that job this weekend. Cases in the oven, bearings in the freezer. Didn't even need my hammer, they dropped right into place. Note leather gloves, hammer and socket and extension bar "drift" on standby.
https://i48.photobucket.com/albums/f216/stinkwheel/engine3.jpg

EDIT: Remember to remove any circlips.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[WildGoose]

Having had more than enough hassles from blind bearing removal lately, particularly in places where you are forced to work, underside of a van etc.

You cannot beat having the proper tool, ask around or think about renting a blind bearing puller with slide hammer.
____________________
So in other words, he stopped you for being flagrantly in posession of a motorcycle in direct contravention of the Hippies, Darkies and People Whose Face I Don't Like The Look of (Police Powers) Act. 1976

[2006 _p1]

Wouldnt all the bearings come out though?...God knows what my mums going to say when i put my engine in the oven haha.

Thanks

[stinkwheel]

[2006 _p1]

Il give it a go now. Shal i sit by the oven untill i hear the pops? Also shal i remove the water pump?

[2006 _p1]

Cheers stinkwheel put em in the oven and they came out really easy. i had to get a bearing of my crank and it was in the oven for like half hour didn't seem to want to budge but got it off.


Thanks again