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Old September 26th, 2019, 15:49   #1
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Join Date: Oct 2018
Location: Toronto ontario
Fuel Economy: 1mpg
Default Need a reply quick, car is on jackstands. Trying to check hub runout in neutral!

Hey guys I'm looking for a quick reply with input or knowledge to something I may be missing .

I have my car up on stands and I'm checking for runout on my front 2 rotors and hubs.

The issue is I took everything off ( caliper, pads) so it's just the rotor bolted to the hub on both sides of the car and the hubs/ axle shafts are very difficult to spin .the point of the test is to see if my wheel bearing Is toast as I've been having lateral wear on my pads.

1) should the hub be spinning on its own or should the hub and shaft be spinning together. I was thinking if its a good quality new hub it should spin freely by itself with no shaft movement. And if its a worn bearing /starting to seize it's giving me this issue where if I turn the hub the whole shaft spins also??

I understand it is a open differential and only 1 side spins ( whichever I'm rotating) but I don't understand if the hub should spin freely or with the axle shaft also under load. THANK YOU
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