Had my belt sander apart yesterday to install the dust port upgrade. In putting it back together I saw that the wide silver disk with the four holes in its edges that holds the sander body on the trunion just spins the lock nut unless you reach inside and hold the nut or put a socket on it. It occurred to me that maybe the disk isn't meant as the lock mechanism and I am missing some parts. The parts diagram at SS seems to show a bolt in the other hole that is over the trunion but the pictured bolt doesn't seem to have a quick tightening knob or any such, and the bolt doesn't appear in the photo in the belt sander instructions at SS (see photo). The instructions are mum on locking the sander body in place. Do I just tighten the disc w/ the four holes enough that I can still move the sander and call it good? Would appreciate any enlightenment.
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