Wachine machine bangs when on spin cycle.

Make sure it's level. That's step one. If it is, you may have a broken drum suspension spring. Or hopefully one that was never reattached after the motor was replaced. Unplug it and take the back panel off and take a look. You may be able to reattach it yourself and save a bunch of money. Good luck!

Probably out of balance, if in the spin cycle. If not, a "bang" corresponding with agitator reverse, you may have a transmission problem. Override open lid off switch with a pencil or used toothbrush in the small hole upper left location just under lid when closed so you can see the agitator action. If so run it till it breaks. Then replace. Otherwise, call your friendly appliance repairman and ask for a repair estimate first. If it is an ageing machine consider repair cost versis a lightly used one or new.

if the drum in the washer klunks/bangs in ANY brand of washer when it is spinning, your load is off balance. stop the machine, re-distribute the wet clothes so that the weight is evenly distributed, then restar the spin. u may have to do this more than once if u did not evely distribute the weight. this is an easy one. just be sure to stop the spin soon as it starts banging. letting it bang thru an entire spin cycle could result in actual damage to the machine. some of the new machines auto shut off at an imbalance so u can correct the problem. think of spinning a top. u unevenly add weights to it then spin it again, it WILL wobble.

weight not distabuted in washer move cloths around so its even

there are springs under the machine that attatch to the tub in 3 to 4 places if one of these springs break it will cause the tub to bang.

Just random input, I apologize if this is of no help to you. I've only experienced this with my washer when clothes somehow get bunched up on one side of it.  The best I can tell you at the moment is to make sure there is relatively equal distribution of clothes around the "washer bucket thingy" if you hear the bang bang bang again.

Does it spin at any speed? Mine quit spinning period because the pump went out.

your washer must drain to spin.you may have a blocked or failed pump.you get to it thru the frount.use a putty knife between the lid and the frount ,push the springs.top comes up take frount off.pump has two hose .pumps white or tan smaller.God bless,tom

this could be one of two problems.

The first which is fairly cheap to repair would be to check the carbon brushes in the motor, they may need replacing, especially if your washing comes out wetter then it should.

The second is the bearings on the drum which is more expensive to replace and would need to be done by an engineer.

putting drive belt back on which has come off