To; JoJim, RE; Icemaker,
This subject was covered previously, but is important enough to repeat.
There are many ways/suggestions.
I have, and still do wat I feel is the easiest and most thorough procedure.
First , I blow out all lines and tank with a small compressor,
At $3.50 a gallon, RV antifreeze is cheap and I use 10 gallons to winterize system, including icemaker.
I do not take anything apart, why tamper with something that's not leaking.
With 10 gallons in the tank , the pump will pump antifreeze through entire system.
Open each faucet/etc. until you get all antifreeze.
Put the frige on and let the icemaker go thru 5-6 cycles or until you get pure antifreeze in the icemaker and it's storage tray.
This procedure takes a little time, but there will be NO freezing.
Hope this helps====AJBJRVERS====