1984ish speed queen ultramate

I have the ultramate stackable in which the washer tilts out. It will not fill, agaitate, or spin. The only thing working is the drain pump. Will a bad motor drive coupler cause these symptoms?? I just replaced the belt and thermo in the dryer and would like to try to repair washer (although it is a pain with the tilt out) but has been a very good machine. Any thoughts on this would be wonderful!! Before all this happened sometimes when I would start it, it would fill and drain and the knob would not move and I would have to advance it or turn it to start again… HELP

I am afraid all of us are too young to be able to comment on this model.