Traduzione in corso passo 4
Open all of the doors. They should open smoothly and quietly. There should be no squeaks, clunks, or grinding noises. Note that on this door there is a slight "clunk" at about the mid point. This door check strap needs to be cleaned and lubricated.
Close each door; it should close with a solid "thump".
You should not have to slam the doors to get them to close.