I have a 1976 HI-LO trailer. It won't go up. The rear portion goes up but not the front. The pump runs just fine. I don't know what pulls up the front and back. Any help would be appreciated. thanks Dave

Welcome to the forum. First thing to check for is a broken cable. You should be able to tell by crawling underneath and looking.

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"Ruben"
2404T, 2003 2500HD 4X4 GMC Sierra SLT Crew Cab w/Astro camper shell and 2003 Chevy Tahoe LE 4X2
Far West Texas