I recently purchased a 1980 Marklift 62 boom lift. It was delivered with the torque hubs disengaged for transport purposes. When I reversed the cover cap on the left side drive wheel, a pin sprung to the outer position and I put the cap back on with the cap button facing out. I assume that was normal. But when I removed the cap from the right side wheel, the inner pin did not slide to the outer position, as if maybe the spring device was missing or broken? Or maybe the wheel has to be rocked forward and back a little, in case there was tension on the spring device? I could easily slide the pin in and out with my fingers. The wheels still don't engage when I step on the foot pedal in the basket and move the drive lever forward and back, even though the hydraulic pump does engage when I move the hand lever. I am completely new to boom lifts. I do have the pdf service and parts manual downloaded from Genie.