I have been working on a neighbors 5th wheel landing gear. He broke the original plastic gear box and has a new metal one that fits fine. The trouble is, it is nearly impossible to lift the trailer manually. The new gearbox is a 3:1 ratio. I do not know what ratio the original was. Does anyone know if there are different ratios available for these gearboxes? I have searched and it is nearly impossible to find any reference to the gear ratio on these replacements.
Roy
2011 GMC 3500, Duramax, Allison
2008 HitchHiker LS 29.5 FKTG with most options