This vid shows installation per Happijac's instruction sheet.. LIFT FRAME INSTALL: System must be installed squarely, at the same height side to side and at the same distance front to back in the RV with vertical rails parallel side to side. Leave wooden packing strips in place until system is secured to the RV. Sufficient backing must be incorporated within the walls of the RV to support the sheer load of the bed lift with bed platforms installed. The.
Installation 1. Use 1/4 " diameter wood or self-tapping sheet metal screws (OEM-supplied) of sufficient length to safely secure the C-channel vertical rails to hold 500 lbs per platform attachment (static load). NOTE: Screws MUST NOT interfere with any moving parts of the bed lift system.. View and Download Lippert Components HAPPIJAC oem installation manual online. Bed Lift. HAPPIJAC lifting systems pdf manual download.