water hammer arrestor washer

Update 7/1: Problem Solved! Thank you @Worth Florida! Recently my husband changed the hot and cold water hoses on the washer with new hoses, and the water hammer issues started immediately. The washer has Sioux Chief AA size mini resters installed at the wall, not on the washer. They must have...

Hi. I have that typical thud noise when the washer's cold water valve shuts off. I now have two arrestors installed, one on the washer's cold water intake and one on the cold water shut off valve. There is no vibration in the pipe at the shut off valve yet there is this thud somewhere in the...