whel bearing noise after replacement

['89 BII blue thunder]

after i have replaced the rear wheel bearings on my 7.5 open diff. is ther suposed to be noise when you spin the tires, it sounds like a grinding noise, i havnt put in new gear lube yet, is that maybe the problem, it just needs to be lubrcated? any info. would help thanks guys

 

[chrwilkins30]

i would think so just turning it is just causing metal on metal contact.