Walt, any thoughts on the best tool to remove the shields besides a flat head screwdriver? Some dirt got caught in my axle bearings and they sound very gritty when turned by hand. They are fairly new so spending $90 for new bearings doesn’t make sense unless I can’t get in there.
Getting the shields off isn’t the problem, it is getting them back on that is usually a fail. How old are the bearings? I’d not expect bearings to last much more than a solid season if you have a dusty track.
I’ve used a lot of the cleaning tricks, but in the end, I just throw them out and buy new ones. That, or just put up with grinding sounds until the bearings are just too loose to use anymore.
I’ve found that the key to keeping bearings longer is to do nothing as much as you can.. By that I mean don’t ever use cleaning products to ‘clean’ them out. Just wipe them off so you don’t break down the existing bearing grease.
Eric, still think that if you have the bearings out, replace them. Experiment with the worst one and save the other for an emergency. If that bearing seizes while you’re in a corner, it’s going to snap your kart right around.
LAD Specialties customer / tony kart / rotax / kt100
I’m working on 50mm bearings. I would run Wd-40 through them at the track to flush out dirt. They have about 16 days on them so I hadnt planned on replacing them. For my Winter tear down I ran brake cleaner through them and then Wd-40. It got rid of the obvious dirt sound and they seem to be spinning nicely but I was wondering if anyone else had any tried and true methods.
I use a punch to pop a hole in the shield. I pump minerals spirts in the hole with a horse size hypodermic needle, clean them out then pump in some 90W gear oil. I only do that after they pick up dirt as long as they’re running smooth I leave them alone.
After a nasty “off” into the dirt I used WD-40 to clean the grit out of my three sealed 50mm axle bearings. I did not remove the shields. Yes, this is a messy process. Then I spun and sprayed them with aerosol red lithium grease. That was last season and they still feel and sound like new. I “rinse” them each track day with a 1 second shot of Tri-Flow. This keeps my axle clean and bright too.