This is a good place to look on the Forum:Reference Library - Hi-Lo camper travel trailer forum
The reference library covers much of the subjects, including maintenance. The lift system maintenance is vitally important and unfortunately it quite often gets overlooked. If you don't keep the pulleys and cables cleaned and lubed you will end up with frayed rusted and broken cables. The guide rod needs cleaned and lubed to prevent bending the hydraulic lift cylinder.
Take some time and read through the subjects in the library. And always ask questions on the forum.
Also, look on the main menu page for the maintenance and repair section.