The replacement of coal fit the engine of my Siemens washing machine WXLS1440 perfect! After changing the 12 year old machine is purring again like the first day. That the old coals were worn one noticed the fact that when in the past washes a scratching (previously unknown) noise was perceiving - then the drum turned suddenly stopped (the final spin). The expansion of the engine is not hard - as a tool brauchts halt a suitable Torx screwdriver and an appropriate wrench. When removing the old coals necessarily remember where the tapered side belongs! The new coals (or their feathers) you pfriemelt then best with a screwdriver back into the pits.