Washing machine shakes badly during spin cycle. I have to shut it down and have not been able to use it. It's almost like the load is totally unbalanced. I have tried small loads, medium load and even running the machine empty. I confirmed the machine is level and that the nuts on the legs have been tighten to the machine.

SOURCE: can not keep the HE 3 washer from jumping around

these machines can have this problem when placed on a pedestal and/or the floor may be level but not solid. a "bouncy" floor will amplify any movements. remember, these machines are much heavier and spin much faster than top-loaders. just because it doesn't jiggle doesn't mean the floor is level. you may have to brace to floor or foundation somehow

SOURCE: Kenmore Waher spin cycle out of balance

Sounds like your front to back spring is pulling to tight, sometimes you need to replace it and sometimes you can take it off and stretch it. hope this helps

SOURCE: Bad shacking during the spin cycle

Remove top of machine and check the centralising springs are still attatched. If springs ok tilt machine against the wall after unplugging from the wall socket and check the shock absorbers. One of them could have jumped out of the guides. If shockies are ok, check the spider for cracks/breaks. The spider is the cast part that holds the outside drum in place. To check this you will have to remove the back plate.

SOURCE: Unbalanced loads

There has been a noted problem with the Kenmore Oasis and the "Out of Balance" or "Ob" error. If this is what you are experiencing, the problem has been attributed to a couple of things. Not having sufficient amount of clothes in the wash tub during a wash cycle. That is...smaller loads cause a problem when the washer tries to distribute he weight evenly in the spin cycle. Not enough clothes, no balanced weight, you get an Out of Balance indication. The other problem (which tends to be the more common issue) is the control board under the operator console. The manufacturers developed a new software to run on the new and improved control boards that is supposed to correct this problem. Double check your load distribution first (which it seems you already have), then check with the manufacturer to see if there may be a recall on your washer that corrects this problem at no cost to the consumer. I hope this helps you some.

SOURCE: Whirlpool ghw 925 washing machine

The drum mounts to a spindle on the back. On these units, it is common for the tripod mounts for this particular design to crack and break. On every call I have had for a terrible vibration on these models, this has been the problem. The remedy is to replace the front and rear tub, as well as the basket. It is also recommended that you replace the drain pump at the same time. Most of this should be covered under at least a parts warranty