||I have a 1969 Aristocrat Land Commander and my husband and I have done some work to get it ready to use... One of the first things we did was put new brakes on it. I don't know all the tech details of that so you can e mail my husband and I am sure he would love to tell you. Donpwood@cableone.net
All I know is it is set up so a gauge is in the truck and it can be set at different levels because we haul it in the mountains in Colorado. As a matter of fact it is sitting in a campground in Deckers and we pulled it from Tulsa. We really love it... the kitchen works perfect with the original stove still in great shape. We did do some upgrades to the water tank and we set up a battery system so we can use some lights when we have no electric. Anyway, we are all about our Land Commander and hope you can rescue your grandparents trailer and get it working again!