Swollen Bearing race

[MudRunnerTD]

So gents i have the GUIV on the hoist to make the fittings and fit up the sliders and noticed the front wheel bearings where loose. Very loose! I was surprised.

So off with the left hub to give them a nip up and I could not get Any adjustment. Any. Hmmmm?? That's odd. Damn that sux!

Off with the wheel, off with the bearing nut, off with the brake calliper. I could not remove the disk and bearing carrier. The outer bearing should just fall out, the inner bearing comes off with the disk.

No chance. Out with the mallet. A lot of big hits and no joy.

I ended up using a 3 arm gear puller to remove the disk assembly.

The race ans bearings appear to be contaminated and I will replace wheel bearing on both sides. I have pulled the spindle off ans inspected the CV and King pin bearing and noth are fine ans clean.

Here is the question... WTAF!!

The left side outer race has a smaller inside diameter. It seems to have shrunk? 8 have put the vernier on both spindles ans they measure the same. The inside D of the right side race is fine. The inside D of the left side race is over 1mm smaller..... WHY?



Right side outer Race



Left side outer race



Both Spindles





I assume is has something to do with heat? But makes no real sense. Heat would expand. Maybe a river crossing would cold shock and contract but this makes no sense. I basically had to press the race off.

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