Bearing removal

[CRTAD313]

I'm replacing a set of steering head bearings this weekend and was told the easy way to remove the bottom one is run a bead of weld round the cone with an arc welder.
Question is will a mig welder work  and any other tips?

[tony27]

Should work, normally only need to do a couple of small beads. As the weld cools it causes the steel to contract & quite often the race will fall out under it's own weight

[Slakewell]

Mig/stick/tig even OXY will work

[frostype400]

I am doing this too at the moment what is the best way to get the new bearing back on?

[Slakewell]

Having been to bearing school (Truely) 
I use a large bit of key steel Normal 20x20 and about Penis length 200mm in my case 
A good 1kg ball hammer.
Place it in the freezer over night will not hurt. 
Ok a bit extra if you have trouble getting it in stright at the start. Steel shop/  buy two bits 50x25 flat bar 150mm long and 1 bit 1/2 inch threaded rod with 4 nuts and a few washers. drill two 5/8 holes in both bits, cut threaded rod to correct size place on the head stem bearing on the F/B and slowly tighten the nuts it should go easy if it dosent your alignment is wrong. Clear as mud 
You can also use your steering stem with just the outer shell on the bottom if are very carefull 

[evo550]

I'm replacing a set of steering head bearings this weekend and was told the easy way to remove the bottom one is run a bead of weld round the cone with an arc welder.
Question is will a mig welder work  and any other tips?

Getting the cone out of the frame is the easy bit, I just feed a long handled flat screwdriver down through the steering and give it a tap with a hammer, always just drop out. The hard bit is getting the bearing off the bottom of the steering stem.

[dt tas]

When i put the new cone in i get the old one and run it around on the bench grinder to make it a tade smaller then use that on top of the new one that way it is the right size .Now have a small collection of cones so mostly have the right size .Also use a solid screw driver to punch them out .cheers george

[topari]

My special tool. Welded to the bearing race and then bang. Works everytime.

[Frank M]

for easy removal next time, grind two small oposite grooves in the bearing shoulder in the frame, befor you install the outer bearing ring.
So you can punch out the bearing from the upper side with a long small driver etc.

[CRTAD313]

ok thanks