nwhp wrote: ↑Sun Sep 04, 2022 12:27 pm
Post pictures of the bores of the 3 center main caps so we can see if they have been align honed.
Using a ball anvil micrometer to measure bearing shell thickness would more accurate and repeatable than a digital caliper.
I personally prefer the direct comparison method of checking clearance. Torque the bearings up in the bores, measure the journal with micrometer, lock the spindle, then set a bore gage with the micrometer and measure the inside diameter of the bearings. The bore gage reading is the clearance.
Good luck.
nwhp
There are honing marks (cross hatch) in all of them...Assume that's what you're looking for.
As for the method: that's what I use and I get repeatable results. I agree on the anvil micrometer but I don't own one.
Anyway, I measured a thickness of the bearing that came out at 2,37mm and the new one is 2,38 mm. The center caps are about .01mm smaller .
So a bearing which is .01mm thicker and a bore which is .01 mm smaller means I'm lacking ca. .02 mm (.0007") in these locations. So when I would like to get .0025" to .0027" I'm only getting around.002. Or .05mm in the worst location (.00196"). If the caps are corrected, I would end up with .06mm or .00236 theoretically. Or I could take out .02mm and would be at .07mm (.00275" which is what I have on 1 & 5).
Not sure if that can be done though.
PS: only torquing the caps to 70 lbs instead of 80 gave me another .01mm...