The Veg wrote:vincereynard wrote:The Veg wrote:Yes, both circlips have been removed. I suspect that some corrosion might be sticking things together.
Or some serious loctite some time in the past? Did you do the last bearing change ? OR A.N.Other left a surprise for the next owner?
Surely it has to be either "loctite" or corrosion? Can you remove the inner race and get at the outer with a "dremel" to split it?
PO -or somebody- did the last change. The inner race seems as well-stuck to the shaft as the outer race is to the carrier. Nothing is coming loose, but it's been a few days since I shot some penetrant on it so I'll give it another whack or two this weekend. If that fails, the old racing mechanic can help but it'll be a couple of weeks until I can get it to him.
When I did mine years ago, removal required a hydraulic press and mandrels. It is an interference fit on the shaft and a light interference fit in the alu housing. When I installed new bearings I used an induction heater at my employer to heat the bearing to 150C to slip it on the shaft without a press. Do not use a torch.
It's possible the PO or previous mechanic found the outer bearing race to the housing clearance excessive and used an anaerobic sealant like Loctite Red to install the bearing in the housing and possibly the shaft. Heating to about 250C per Loctite/Henkel.
https://www.henkel-adhesives.com/us/en/insights/all-insights/blog/how-to-remove-red-threadlocker.htmlThe issue is, 250C is near the plastic temperature of most aluminum alloys. I'd be nervous about getting the housing that hot, but it will also grow the housing enough to release the bearing under load in a press.
If you are uncomfortable doing that, your old race mechanic friend can help.
Regards,
Dan