If it works for a while it probably isn't the transmission (at least not
outright though a sustaned vibration would wear out the plastic bushing
material rapidly). I would guess that starting the spin cycle with soaking
clothes would elicit the highest torque that the coupling would see. If the
drum were resisting or if the clothes were too wet as a result of incomplete
pumping, this torque would be further multiplied at the very beginning of
the spin cycle.

Verify the drain cycle is complete and long enough. Mine seems to run the
drain pump for a few minutes even though nothing seems to be draining
anymore.

Verify the drum is not binding when it spins

I assume you already checked everything about re-mounting the motor. i.e.
not loose, not crooked, no leftover washers bolts etc.

Time to start cleaning smaller loads. Marginally overloaded or fully loaded
laundry for years might just have been the straw that broke the camels back.
A full load of sheets is a lot bigger than a full load of bluejeans if you
consider the momentum of wet cloth.

I suppose the transmission might have a metal fragment floating around
inside and once in a while when it starts to spin, it lodges like a monkey
wrench in the works and just jams to a halt but non destructively (except to
the coupling which acts like a fuse). Not so likely IMO as I would expect a
much shorter more random MTBF than several months if that were the mode.



"d.honeycutt" wrote in message
news:mZS3g.945990$xm3.692830@attbi_s21...
I have a 6 year old 70 series washer that I have to keep replacing the
motor to transmission coupler on. This coupler breaks at the same time
during the wash while using the washer in the Heavy Duty Fast/Fast mode.
After the washer washes the clothes and ready to spin is when it breaks. It
might go a few months before it breaks again. I have replaced 4 or 5 of the
couplers in the last year or so. Has anyone got any ideas? Transmission?