Read to me: Question How to replace an inaccessible air
If someone has a broken whirlpool on/off switch and wants install a new one, the old one can be removed by taking a screw driver and knocking the switch through the hole in the tub, and then fish up the air tube that will be needed on the new switch. Usually, a coat hanger can be used to retrieve the air switch tube that will need to be used on the new switch. If the back of the bath
is inaccessible, then the new switch can be siliconed into place and the retaining nut discarded. Take care to firmly slip the original hose on the new switch nipple before permanently siliconing in the new switch.