Looking at part number 33 on page 12, which is the "Bracket and Support Assy.", there are two biggish washes welded onto the plate, can someone please tell what their purpose is? I have two of those brackets, one is a bit rough with the washes in question and the other that I would like to use has no washes

. I suppose one could machine two of them and weld them on

On one of the brackets I noticed it had bushes in the big washes, which are not shown on the drawing, not to get confused with those numbered 34 which are the same as those numbered 2.
Any help would be appreciated, Mervyn