Disassembly of wheel bearings

Alfy · December 6th, 2020, 06:28 AM

Hi everyone, I wanted to take advantage of the cold months to repaint the wheels of my husaberg. I would like to take everything apart to be able to sandblast and powder coat. My bearings and wheel dust boots are in good condition. Is there the possibility of disassembling them without damaging them? I would like to disassemble them and then reassemble them after painting.

heidenberg · December 6th, 2020, 07:03 AM

Nope

Rainerio · December 6th, 2020, 11:32 AM

I don't agree you can repack the bearing seals are so cheap I get new ones. But also can be reused. Only thing is if we're an expert rider I'd I replace them all. Now you be carful in removing the bearings take you time hitting 4 corners a little at a time.

heidenberg · December 6th, 2020, 11:57 AM

Or you get it all back together with freshly painted wheels and realize your shit used wheel bearings have bought the farm

Alfy · December 6th, 2020, 01:45 PM

I have the possibility to create an aluminum cylinder that can fit precisely into the bearing hole, I would make a hole, a cross cut, a countersink to insert a conical head screw. I would lock a conical head screw with a nut on the opposite side of the aluminum cylinder. Pulling the bolt would lock the cylinder into the bearing bore. Then I would put everything in an oven at 100 degrees and I'm sure that by tapping the bolt gently I would be able to push the bearing and dust cover out gently enough not to damage them.

Rainerio · December 6th, 2020, 06:44 PM

If there no good from the start then Heidelberg is right. Of course any rust replace them. Check the wheels for any play then replace them. You check them with the bike off ground grab the wheel moving it sideways then you should good. but also the miles matter. If any bearing goes bad it will be the sprocket side of rear wheel. Checking your wheels for possible bad bearings should be part of regular maintenance anyway.

ede · December 17th, 2020, 11:15 AM

Hi Alfy,

when you disassemble the wheels, you can change the bearings too (SKF 61904 2RS: 5€ each).

When you assemble the bearings, you can use a hot plate to gently warm the hubs and drop the cooled bearings in (take off the brake disc). You can use ice-spray (e.g. by caramba or others).

When painting the wheels consider, the mounting surfaces originally have no paint, to ensure alignment! Otherwise build some covers e.g. using a 3d printer or bearing seals...

Regards,
EDE

Alfy · December 27th, 2020, 05:03 AM

I made the pullers for the wheel bearings. I heated the front hubs to 100 °C and the bearings came out with a light hammer tap. I had to heat up the rear hub to 120 °C and the bearings came out with a slightly firmer hammer blow. Maybe I will change the bearings anyway because they are cheap and in any case I want to keep the bike for a long time, but the disassembled bearings turn without any noise or irregularity