I recently replaced the outer tub (ugh $$) just to replace the bearings -- which had failed because the seal leaked -- and the replacement tub/bearings rattle or knock in spin cycle. Seems like the inner sleeve between the bearings is chattering like a bad caster on a shopping cart. The new tub came with a replacement bolt and washers to "address bearing knock" but none of this seems to matter. Now I find out I can replace the bearings myself, if I want to spend the extra time. I've taken out the old bearings and they were made in U.S.A. . . the new tube bearings are made in china. Why is there an intermittent knock? Has anyone come across this problem?

Check the 3 mounting points where the spinner support meets the inner tub. If any of the bolts are broke or the a spinenr arm is broke that can cause knocking...

See NEPTUNE BEARING. You can replace those bearings for less and they rent the famous tony tool which includes a DVD that shows you step by step how to disassemble machine , replace bearings and install the 12002022 seal kit.

In addition, since you own a MAH3000, you inherited the faulty 12002535 door latch wax motor issue. You can hear a funny song at MAYTAG NEPTUNE WASHER R11 Q6 REPAIR KIT + 12002535 WAX MOTOR that explains what happens when the wax motor shorts out...

The earlier MAH3000's have (2) more wax motors in the soap dispenser too that will need to be replaced as well...