How To Stop Water Hammer Dishwasher. Then open all faucets throughout the house, and flush all toilets. Install water hammer arrestors to prevent clanking pipes.
The first step is to shut off the main water supply valve. Water hammer arrestors are used to absorb the shock when water flowing in a piping system suddenly stops due to fast closing shutoff valves, dishwashers, and clothes washers. Get a 3/4 heavy duty garden hose.
So you have checked that your water hammer arrestors or air chambers are in place and working properly.
Open the washer's door and place a level on the rack railing, which runs vertically across the interior compartment, and then place it horizontally across the open door to ensure that the machine is level. The washer will fill more slowly but it will still fill to the right water level. This will drain out all the remaining water in your plumbing system, allowing the air chambers to be refilled with air. Do you sometimes hear a loud “thunk” sound when you turn off a faucet or when the water stops flowing into your washing machine or dishwasher?