I have a 545 pfaff machine also. A few years ago the knee lift, attached to the underside of the table, broke and the parts were lost in a move of my upholstery shop
I can't fix it because I don't know what the missing parts looked like.
After watching your video on youtube, it appears you have the same type of knee lift
Would be able to post some pictures of the lift so that I can have someone make them for me?
I would rather buy a new knee lift, but can't find one
I have two brackets (that a horizontal bar runs through) that attach to the underside of the table. There is a lever with a wheel on it that makes contact with the lever on the underside of the sewing machine
What is missing is maybe another bracket between the lever w/wheel and the front bracket
Thank you for any help