'82 XL250 swingarm bearings a DIY job?

[neels]

Assuming I can find some, is changing these myself viable, or should I take it somewhere and get it done?

I have done some trawling on the net and they appear to be the same as XR250 ones up to '91, any suggestions where I might be able to get some, or get new ones fitted?

[rudolph]

SACO should have them.

I think there are 4 bearings in there, sometimes you need a mig welder and lots of chisels and things to get them out when the needle rollers brake up.

[neels]

when the needle rollers brake up.

That's why they need changing

I've got a mig welder, how does that help getting them out?

I'm more worried about getting new ones in without munting them

[rudolph]

you runn a weld round the inside of the bearing and then if you are luckey it falls out, if it dosn't you have a lump to chisel on

[rudolph]

of cores all of the rollers must be out of the bearing before you weld in there

[Ocean1]

Not familliar, but a variation on the following works for most.

Get a length of 12mm screwed rod and a few nuts.
Get a few heavy washers, one about 0.5 to 1mm smaller than the OD of the bearing and a couple about 6-10mm larger.
Grind/file two flats on the edges of the smaller washer so that you can insert it through the bearing and position it behind.

Find a piece of tube (socket) a tad larger than the bearing, thread the screwed rod through the larger washer/s and tube and slip it through the bearings and the washer behind.

Screw nuts on both ends and nip them up.
Check the tube/(socket) is aligned so the bearing can pull out inside it.
Tighten the nuts, (pays to double nut the one inside so it doesn't turn).

Repeat for the other side.

If you have to hit a new needle roller housing you'll quite likely fuck it.

The same trick works for installing new ones, only the screwed rod goes all the way through and you use big washers on both ends.

Fill the bearing cavity with a waterproof grease before reassembly.

[neels]

Cheers guys,

I flicked one out this morning, I see it has a NTN part number on it so I'll see who's open tomorrow morning and try and track some down.

I can see how you could fuck them pretty easily putting them in, I'll have to be gentle...

Bloody good of Honda to use off the shelf bearings on their bikes!