terrible screeching during agitation after having washer only 3 months

First I disconnected the hoses and moved washer out to a larger area. Washer had to be completely torn down. Took front cover and casing off. Took all electrical and plumbing fixtures out. Removed the drum hold-down springs. Removed the drive belt. Inverted the drum/agitator section. Removed the drive pulley and bearing assembly. Removed the brake snubber. Removed the brake shoe. Reinstalled new parts. Put washer back together. It now works great.