i have two of those,both from 1984-HA3001 and HA5001,pretty good washers and they
feature a rim flo filter setup.most repair work on these is pretty easy,but
repairs involving the agitator shaft or basket hub can be a real pain as i found
out wih one of mine

in for the drive block would not come out and there was
severe corrosion of the aluminum basket hub...ended up taking the whole tub,basket
tranny,milkstool,etc.from a smashed up dump grab and installing in the washer.
Parts machine was also an '84,so must have been a good year for marathon
speed queens-at least locally.Have not found any matching dryers,so these might
be a case where the washers outlived the dryers?